0567fb7 Thanks @ascorbic! - Adds // to list of internal path prefixes that do not have automated trailing slash handling
#13894 b36e72f Thanks @florian-lefebvre! - Removes Astro Studio commands from the CLI help
Updated dependencies [0567fb7]:
#14169 f4e8889 Thanks @ascorbic! - Skips trailing slash handling for paths that start with /..
#14170 34e6b3a Thanks @ematipico! - Fixes an issue where static redirects couldn’t correctly generate a redirect when the destination is a prerendered route, and the output is set to "server".
#14169 f4e8889 Thanks @ascorbic! - Fixes a bug that prevented images from being displayed in dev when using the Netlify adapter with trailingSlash set to always
Updated dependencies [f4e8889]:
#14153 29e9283 Thanks @jp-knj! - Fixes a regression introduced by a recent optimisation of how SVG images are emitted during the build.
#14156 592f08d Thanks @TheOtterlord! - Fix the client router not submitting forms if the active URL contained a hash
#14160 d2e25c6 Thanks @ascorbic! - Fixes a bug that meant some remote image URLs could cause invalid filenames to be used for processed images
#14167 62bd071 Thanks @ascorbic! - Fixes a bug that prevented destroyed sessions from being deleted from storage unless the session had been loaded
#14059 19f53eb Thanks @benosmac! - Fixes a bug in i18n implementation, where Astro didn’t emit the correct pages when fallback is enabled, and a locale uses a catch-all route, e.g. src/pages/es/[...catchAll].astro
#14155 31822c3 Thanks @ascorbic! - Fixes a bug that caused an error “serverEntrypointModule[_start] is not a function” in some adapters
#14031 e9206c1 Thanks @jp-knj! - Optimized the build pipeline for SVG images. Now, Astro doesn’t reprocess images that have already been processed.
#14132 976879a Thanks @ematipico! - Fixes a bug where the property Astro.routePattern/context.routePattern wasn’t updated when using a rewrite via middleware.
#14131 aafc4d7 Thanks @florian-lefebvre! - Fixes a case where an error occurring in a middleware would show the dev overlay instead of the custom 500.astro page
#14127 2309ada Thanks @florian-lefebvre! - Upgrades zod
#14134 186c201 Thanks @ascorbic! - Throws a more helpful error in dev if trying to use a server island without an adapter
#14129 3572d85 Thanks @ematipico! - Fixes a bug where the CSP headers was incorrectly added to a page when using an adapter.
#14119 14807a4 Thanks @ascorbic! - Fixes a bug that caused builds to fail if a client directive was mistakenly added to an Astro component
#14001 4b03d9c Thanks @dnek! - Fixes an issue where getImage() assigned the resized base URL to the srcset URL of ImageTransform, which matched the width, height, and format of the original image.
#14071 d2cb35d Thanks @Grisoly! - Exposes the Code component lang prop type:
import type { CodeLanguage } from 'astro';#14111 5452ee6 Thanks @ascorbic! - Fixes a bug that prevented “key” from being used as a prop for Astro components in MDX
#14106 b5b39e4 Thanks @ascorbic! - Exits with non-zero exit code when config has an error
#14112 37458b3 Thanks @ascorbic! - Fixes a bug that meant that SVG components could no longer be serialized with JSON.stringify
#14061 c7a7dd5 Thanks @jonasgeiler! - Add module declaration for ?no-inline asset imports
#14109 5a08fa2 Thanks @ascorbic! - Throw a more helpful error if defineLiveCollection is used outside of a live.config file
#14110 e7dd4e1 Thanks @ascorbic! - Warn if duplicate IDs are found by file loader
#14094 22e9087 Thanks @ascorbic! - Correct types to allow priority on all images
#14091 26c6b6d Thanks @ascorbic! - Fixes a bug that caused a type error when defining session options without a driver
#14082 93322cb Thanks @louisescher! - Fixes an issue where Astro’s default 404 route would incorrectly match routes containing “/404” in dev
#14089 687d253 Thanks @florian-lefebvre! - Fixes a case where astro:env would not load the right environments variables in dev
#14092 6692c71 Thanks @ascorbic! - Improves error handling in live collections
#14074 144a950 Thanks @abcfy2! - Fixes a bug that caused some image service builds to fail
#14092 6692c71 Thanks @ascorbic! - Fixes a case where zod could not be imported from astro:content virtual module in live collection config
#13971 fe35ee2 Thanks @adamhl8! - Adds an experimental flag rawEnvValues to disable coercion of import.meta.env values (e.g. converting strings to other data types) that are populated from process.env
Astro allows you to configure a type-safe schema for your environment variables, and converts variables imported via astro:env into the expected type.
However, Astro also converts your environment variables used through import.meta.env in some cases, and this can prevent access to some values such as the strings "true" (which is converted to a boolean value), and "1" (which is converted to a number).
The experimental.rawEnvValues flag disables coercion of import.meta.env values that are populated from process.env, allowing you to use the raw value.
To enable this feature, add the experimental flag in your Astro config:
import { defineConfig } from "astro/config"
export default defineConfig({ experimental: { rawEnvValues: true, }})If you were relying on this coercion, you may need to update your project code to apply it manually:
- const enabled: boolean = import.meta.env.ENABLED+ const enabled: boolean = import.meta.env.ENABLED === "true"See the experimental raw environment variables reference docs for more information.
#13941 6bd5f75 Thanks @aditsachde! - Adds support for TOML files to Astro’s built-in glob() and file() content loaders.
In Astro 5.2, Astro added support for using TOML frontmatter in Markdown files instead of YAML. However, if you wanted to use TOML files as local content collection entries themselves, you needed to write your own loader.
Astro 5.12 now directly supports loading data from TOML files in content collections in both the glob() and the file() loaders.
If you had added your own TOML content parser for the file() loader, you can now remove it as this functionality is now included:
import { defineCollection } from "astro:content";import { file } from "astro/loaders"; import { parse as parseToml } from "toml";const dogs = defineCollection({ loader: file("src/data/dogs.toml", { parser: (text) => parseToml(text) }), loader: file("src/data/dogs.toml") schema: /* ... */})Note that TOML does not support top-level arrays. Instead, the file() loader considers each top-level table to be an independent entry. The table header is populated in the id field of the entry object.
See Astro’s content collections guide for more information on using the built-in content loaders.
6bd5f75]:
#14045 3276b79 Thanks @ghubo! - Fixes a problem where importing animated .avif files returns a NoImageMetadata error.
#14041 0c4d5f8 Thanks @dixslyf! - Fixes a <ClientRouter /> bug where the fallback view transition animations when exiting a page
ran too early for browsers that do not support the View Transition API.
This bug prevented event.viewTransition?.skipTransition() from skipping the page exit animation
when used in an astro:before-swap event hook.
#13972 db8f8be Thanks @ematipico! - Updates the NodeApp.match() function in the Adapter API to accept a second, optional parameter to allow adapter authors to add headers to static, prerendered pages.
NodeApp.match(request) currently checks whether there is a route that matches the given Request. If there is a prerendered route, the function returns undefined, because static routes are already rendered and their headers cannot be updated.
When the new, optional boolean parameter is passed (e.g. NodeApp.match(request, true)), Astro will return the first matched route, even when it’s a prerendered route. This allows your adapter to now access static routes and provides the opportunity to set headers for these pages, for example, to implement a Content Security Policy (CSP).
#14029 42562f9 Thanks @ematipico! - Fixes a bug where server islands wouldn’t be correctly rendered when they are rendered inside fragments.
Now the following examples work as expected:
---import { Cart } from '../components/Cart.astro';---
<> <Cart server:defer /></>
<Fragment slot="rest"> <Cart server:defer> <div slot="fallback">Not working</div> </Cart></Fragment>#14017 8d238bc Thanks @dmgawel! - Fixes a bug where i18n fallback rewrites didn’t work in dynamic pages.
#14000 3cbedae Thanks @feelixe! - Fix routePattern JSDoc examples to show correct return values
#13990 de6cfd6 Thanks @isVivek99! - Fixes a case where astro:config/client and astro:config/server virtual modules would not contain config passed to integrations updateConfig() during the build
#14019 a160d1e Thanks @ascorbic! - Removes the requirement to set type: 'live' when defining experimental live content collections
Previously, live collections required a type and loader configured. Now, Astro can determine that your collection is a live collection without defining it explicitly.
This means it is now safe to remove type: 'live' from your collections defined in src/live.config.ts:
import { defineLiveCollection } from 'astro:content';import { storeLoader } from '@mystore/astro-loader';
const products = defineLiveCollection({ type: 'live', loader: storeLoader({ apiKey: process.env.STORE_API_KEY, endpoint: 'https://api.mystore.com/v1', }),});
export const collections = { products };This is not a breaking change: your existing live collections will continue to work even if you still include type: 'live'. However, we suggest removing this line at your earliest convenience for future compatibility when the feature becomes stable and this config option may be removed entirely.
#13966 598da21 Thanks @msamoylov! - Fixes a broken link on the default 404 page in development
#13988 609044c Thanks @ascorbic! - Fixes a bug in live collections that caused it to incorrectly complain about the collection being defined in the wrong file
#13909 b258d86 Thanks @isVivek99! - Fixes rendering of special boolean attributes for custom elements
#13983 e718375 Thanks @florian-lefebvre! - Fixes a case where the toolbar audit would incorrectly flag images processed by Astro in content collections documents
#13999 f077b68 Thanks @ascorbic! - Adds lastModified field to experimental live collection cache hints
Live loaders can now set a lastModified field in the cache hints for entries and collections to indicate when the data was last modified. This is then available in the cacheHint field returned by getCollection and getEntry.
#13987 08f34b1 Thanks @ematipico! - Adds an informative message in dev mode when the CSP feature is enabled.
#14005 82aad62 Thanks @ematipico! - Fixes a bug where inline styles and scripts didn’t work when CSP was enabled. Now when adding <styles> elements inside an Astro component, their hashes care correctly computed.
#13985 0b4c641 Thanks @jsparkdev! - Updates wrong link
#13917 e615216 Thanks @ascorbic! - Adds a new priority attribute for Astro’s image components.
This change introduces a new priority option for the <Image /> and <Picture /> components, which automatically sets the loading, decoding, and fetchpriority attributes to their optimal values for above-the-fold images which should be loaded immediately.
It is a boolean prop, and you can use the shorthand syntax by simply adding priority as a prop to the <Image /> or <Picture /> component. When set, it will apply the following attributes:
loading="eager"decoding="sync"fetchpriority="high"The individual attributes can still be set manually if you need to customize your images further.
By default, the Astro <Image /> component generates <img> tags that lazy-load their content by setting loading="lazy" and decoding="async". This improves performance by deferring the loading of images that are not immediately visible in the viewport, and gives the best scores in performance audits like Lighthouse.
The new priority attribute will override those defaults and automatically add the best settings for your high-priority assets.
This option was previously available for experimental responsive images, but now it is a standard feature for all images.
<Image src="/path/to/image.jpg" alt="An example image" priority />[!Note] You should only use the
priorityoption for images that are critical to the initial rendering of the page, and ideally only one image per page. This is often an image identified as the LCP element when running Lighthouse tests. Using it for too many images will lead to performance issues, as it forces the browser to load those images immediately, potentially blocking the rendering of other content.
#13917 e615216 Thanks @ascorbic! - The responsive images feature introduced behind a flag in v5.0.0 is no longer experimental and is available for general use.
The new responsive images feature in Astro automatically generates optimized images for different screen sizes and resolutions, and applies the correct attributes to ensure that images are displayed correctly on all devices.
Enable the image.responsiveStyles option in your Astro config. Then, set a layout attribute on any or
image.layout, for instantly responsive images with automatically generated srcset and sizes attributes based on the image’s dimensions and the layout type.
Displaying images correctly on the web can be challenging, and is one of the most common performance issues seen in sites. This new feature simplifies the most challenging part of the process: serving your site visitor an image optimized for their viewing experience, and for your website’s performance.
For full details, see the updated Image guide.
The experimental.responsiveImages flag has been removed, and all experimental image configuration options have been renamed to their final names.
If you were using the experimental responsive images feature, you’ll need to update your configuration:
export default defineConfig({ experimental: { responsiveImages: true, },});During the experimental phase, default styles were applied automatically to responsive images. Now, you need to explicitly set the responsiveStyles option to true if you want these styles applied.
export default defineConfig({ image: { responsiveStyles: true, },});The experimental image configuration options have been renamed:
Before:
export default defineConfig({ image: { experimentalLayout: 'constrained', experimentalObjectFit: 'cover', experimentalObjectPosition: 'center', experimentalBreakpoints: [640, 750, 828, 1080, 1280], experimentalDefaultStyles: true, }, experimental: { responsiveImages: true, },});After:
export default defineConfig({ image: { layout: 'constrained', objectFit: 'cover', objectPosition: 'center', breakpoints: [640, 750, 828, 1080, 1280], responsiveStyles: true, // This is now *false* by default },});The layout, fit, and position props on <Image> and <Picture> components work exactly the same as before:
<Image src={myImage} alt="A responsive image" layout="constrained" fit="cover" position="center"/>If you weren’t using the experimental responsive images feature, no changes are required.
Please see the Image guide for more information on using responsive images in Astro.
#13685 3c04c1f Thanks @ascorbic! - Adds experimental support for live content collections
Live content collections are a new type of content collection that fetch their data at runtime rather than build time. This allows you to access frequently-updated data from CMSs, APIs, databases, or other sources using a unified API, without needing to rebuild your site when the data changes.
In Astro 5.0, the content layer API added support for adding diverse content sources to content collections. You can create loaders that fetch data from any source at build time, and then access it inside a page via getEntry() and getCollection(). The data is cached between builds, giving fast access and updates.
However there is no method for updating the data store between builds, meaning any updates to the data need a full site deploy, even if the pages are rendered on-demand. This means that content collections are not suitable for pages that update frequently. Instead, today these pages tend to access the APIs directly in the frontmatter. This works, but leads to a lot of boilerplate, and means users don’t benefit from the simple, unified API that content loaders offer. In most cases users tend to individually create loader libraries that they share between pages.
Live content collections solve this problem by allowing you to create loaders that fetch data at runtime, rather than build time. This means that the data is always up-to-date, without needing to rebuild the site.
To enable live collections add the experimental.liveContentCollections flag to your astro.config.mjs file:
{ experimental: { liveContentCollections: true, },}Then create a new src/live.config.ts file (alongside your src/content.config.ts if you have one) to define your live collections with a live loader and optionally a schema using the new defineLiveCollection() function from the astro:content module.
import { defineLiveCollection } from 'astro:content';import { storeLoader } from '@mystore/astro-loader';
const products = defineLiveCollection({ type: 'live', loader: storeLoader({ apiKey: process.env.STORE_API_KEY, endpoint: 'https://api.mystore.com/v1', }),});
export const collections = { products };You can then use the dedicated getLiveCollection() and getLiveEntry() functions to access your live data:
---import { getLiveCollection, getLiveEntry, render } from 'astro:content';
// Get all productsconst { entries: allProducts, error } = await getLiveCollection('products');if (error) { // Handle error appropriately console.error(error.message);}
// Get products with a filter (if supported by your loader)const { entries: electronics } = await getLiveCollection('products', { category: 'electronics' });
// Get a single product by ID (string syntax)const { entry: product, error: productError } = await getLiveEntry('products', Astro.params.id);if (productError) { return Astro.redirect('/404');}
// Get a single product with a custom query (if supported by your loader) using a filter objectconst { entry: productBySlug } = await getLiveEntry('products', { slug: Astro.params.slug });
const { Content } = await render(product);---
<h1>{product.title}</h1><Content />See the docs for the experimental live content collections feature for more details on how to use this feature, including how to create a live loader. Please give feedback on the RFC PR if you have any suggestions or issues.
#13957 304df34 Thanks @ematipico! - Fixes an issue where report-uri wasn’t available in experimental.csp.directives, causing a typing error and a runtime validation error.
#13957 304df34 Thanks @ematipico! - Fixes a type error for the CSP directives upgrade-insecure-requests, sandbox, and trusted-type.
#13862 fe8f61a Thanks @florian-lefebvre! - Fixes a case where the dev toolbar would crash if it could not retrieve some essential data
#13976 0a31d99 Thanks @florian-lefebvre! - Fixes a case where Astro Actions types would be broken when using a tsconfig.json with "moduleResolution": "nodenext"
#13923 a9ac5ed Thanks @ematipico! - BREAKING CHANGE to the experimental Content Security Policy (CSP) only
Changes the behavior of experimental Content Security Policy (CSP) to now serve hashes differently depending on whether or not a page is prerendered:
<meta> element for static pages.Response header content-security-policy for on-demand rendered pages.This new strategy allows you to add CSP content that is not supported in a <meta> element (e.g. report-uri, frame-ancestors, and sandbox directives) to on-demand rendered pages.
No change to your project code is required as this is an implementation detail. However, this will result in a different HTML output for pages that are rendered on demand. Please check your production site to verify that CSP is working as intended.
To keep up to date with this developing feature, or to leave feedback, visit the CSP Roadmap proposal.
#13926 953a249 Thanks @ematipico! - Adds a new Astro Adapter Feature called experimentalStaticHeaders to allow your adapter to receive the Headers for rendered static pages.
Adapters that enable support for this feature can access header values directly, affecting their handling of some Astro features such as Content Security Policy (CSP). For example, Astro will no longer serve the CSP <meta http-equiv="content-security-policy"> element in static pages to adapters with this support.
Astro will serve the value of the header inside a map that can be retrieved from the hook astro:build:generated. Adapters can read this mapping and use their hosting headers capabilities to create a configuration file.
A new field called experimentalRouteToHeaders will contain a map of Map<IntegrationResolvedRoute, Headers> where the Headers type contains the headers emitted by the rendered static route.
To enable support for this experimental Astro Adapter Feature, add it to your adapterFeatures in your adapter config:
export default function createIntegration() { return { name: '@example/my-adapter', hooks: { 'astro:config:done': ({ setAdapter }) => { setAdapter({ name: '@example/my-adapter', serverEntrypoint: '@example/my-adapter/server.js', adapterFeatures: { experimentalStaticHeaders: true, }, }); }, }, };}See the Adapter API docs for more information about providing adapter features.
#13697 af83b85 Thanks @benosmac! - Fixes issues with fallback route pattern matching when i18n.routing.fallbackType is rewrite.
generatePath when building fallback routes and checking for existing translated pagesNow for a route to be matched it needs to be inside a named [locale] folder. This fixes an issue where route.pattern.test() incorrectly matched dynamic routes, causing the page to be skipped.
findRouteToRewriteNow the requested pathname must exist in route.distURL for a dynamic route to match. This fixes an issue where route.pattern.test() incorrectly matched dynamic routes, causing the build to fail.
#13924 1cd8c3b Thanks @qw-in! - Fixes an edge case where isPrerendered was incorrectly set to false for static redirects.
#13926 953a249 Thanks @ematipico! - Fixes an issue where the experimental CSP meta element wasn’t placed in the <head> element as early as possible, causing these policies to not apply to styles and scripts that came before the meta element.
#13919 423fe60 Thanks @ematipico! - Fixes a bug where Astro added quotes to the CSP resources.
Only certain resources require quotes (e.g. 'self' but not https://cdn.example.com), so Astro no longer adds quotes to any resources. You must now provide the quotes yourself for resources such as 'self' when necessary:
export default defineConfig({ experimental: { csp: { styleDirective: { resources: [ "self", "'self'", "https://cdn.example.com" ] } } }})#13914 76c5480 Thanks @ematipico! - BREAKING CHANGE to the experimental Content Security Policy feature only
Removes support for experimental Content Security Policy (CSP) when using the <ClientRouter /> component for view transitions.
It is no longer possible to enable experimental CSP while using Astro’s view transitions. Support was already unstable with the <ClientRouter /> because CSP required making its underlying implementation asynchronous. This caused breaking changes for several users and therefore, this PR removes support completely.
If you are currently using the component for view transitions, please remove the experimental CSP flag as they cannot be used together.
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental: { csp: true }});Alternatively, to continue using experimental CSP in your project, you can consider migrating to the browser native View Transition API and remove the <ClientRouter /> from your project. You may be able to achieve similar results if you are not using Astro’s enhancements to the native View Transitions and Navigation APIs.
Support might be reintroduced in future releases. You can follow this experimental feature’s development in the CSP RFC.
#13899 7a1303d Thanks @reknih! - Fix bug where error pages would return invalid bodies if the upstream response was compressed
#13902 051bc30 Thanks @arHSM! - Fixes a bug where vite virtual module ids were incorrectly added in the dev server
#13905 81f71ca Thanks @jsparkdev! - Fixes wrong contents in CSP meta tag.
#13907 8246bcc Thanks @martrapp! - Fixes a bug that caused view transition names to be lost.
#13901 37fa0a2 Thanks @ansg191! - fix fallback not being removed when server island is rendered
#13802 0eafe14 Thanks @ematipico! - Adds experimental Content Security Policy (CSP) support
CSP is an important feature to provide fine-grained control over resources that can or cannot be downloaded and executed by a document. In particular, it can help protect against cross-site scripting (XSS) attacks.
Enabling this feature adds additional security to Astro’s handling of processed and bundled scripts and styles by default, and allows you to further configure these, and additional, content types. This new experimental feature has been designed to work in every Astro rendering environment (static pages, dynamic pages and single page applications), while giving you maximum flexibility and with type-safety in mind.
It is compatible with most of Astro’s features such as client islands, and server islands, although Astro’s view transitions using the <ClientRouter /> are not yet fully supported. Inline scripts are not supported out of the box, but you can provide your own hashes for external and inline scripts.
To enable this feature, add the experimental flag in your Astro config:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental: { csp: true, },});For more information on enabling and using this feature in your project, see the Experimental CSP docs.
For a complete overview, and to give feedback on this experimental API, see the Content Security Policy RFC.
#13850 1766d22 Thanks @ascorbic! - Provides a Markdown renderer to content loaders
When creating a content loader, you will now have access to a renderMarkdown function that allows you to render Markdown content directly within your loaders. It uses the same settings and plugins as the renderer used for Markdown files in Astro, and follows any Markdown settings you have configured in your Astro project.
This allows you to render Markdown content from various sources, such as a CMS or other data sources, directly in your loaders without needing to preprocess the Markdown content separately.
import type { Loader } from 'astro/loaders';import { loadFromCMS } from './cms';
export function myLoader(settings): Loader { return { name: 'my-loader', async load({ renderMarkdown, store }) { const entries = await loadFromCMS();
store.clear();
for (const entry of entries) { // Assume each entry has a 'content' field with markdown content store.set(entry.id, { id: entry.id, data: entry, rendered: await renderMarkdown(entry.content), }); } }, };}The return value of renderMarkdown is an object with two properties: html and metadata. These match the rendered property of content entries in content collections, so you can use them to render the content in your components or pages.
---import { getEntry, render } from 'astro:content';const entry = await getEntry('my-collection', Astro.params.id);const { Content } = await render(entry);---
<Content />For more information, see the Content Loader API docs.
#13887 62f0668 Thanks @yanthomasdev! - Adds an option for integration authors to suppress adapter warning/errors in supportedAstroFeatures. This is useful when either an warning/error isn’t applicable in a specific context or the default one might conflict and confuse users.
To do so, you can add suppress: "all" (to suppress both the default and custom message) or suppress: "default" (to only suppress the default one):
setAdapter({ name: 'my-astro-integration', supportedAstroFeatures: { staticOutput: 'stable', hybridOutput: 'stable', sharpImageService: { support: 'limited', message: "The sharp image service isn't available in the deploy environment, but will be used by prerendered pages on build.", suppress: 'default', }, },});For more information, see the Adapter API reference docs.
#13877 5a7797f Thanks @yuhang-dong! - Fixes a bug that caused Astro.rewrite to fail when used in sequenced middleware
#13872 442b841 Thanks @isVivek99! - Fixes rendering of the download attribute when it has a boolean value
#13037 de2fc9b Thanks @nanarino! - Fixes rendering of the popover attribute when it has a boolean value
#13851 45ae95a Thanks @ascorbic! - Allows disabling default styles for responsive images
This change adds a new image.experimentalDefaultStyles option that allows you to disable the default styles applied to responsive images.
When using experimental responsive images, Astro applies default styles to ensure the images resize correctly. In most cases this is what you want – and they are applied with low specificity so your own styles override them. However in some cases you may want to disable these default styles entirely. This is particularly useful when using Tailwind 4, because it uses CSS cascade layers to apply styles, making it difficult to override the default styles.
image.experimentalDefaultStyles is a boolean option that defaults to true, so you can change it in your Astro config file like this:
export default { image: { experimentalDefaultStyles: false, }, experimental: { responsiveImages: true, },};#13858 cb1a168 Thanks @florian-lefebvre! - Fixes the warning shown when client directives are used on Astro components
#12574 da266d0 Thanks @apatel369! - Allows using server islands in mdx files
#13843 fbcfa68 Thanks @z1haze! - Export type AstroSession to allow use in explicitly typed safe code.
#13809 3c3b492 Thanks @ascorbic! - Increases minimum Node.js version to 18.20.8
Node.js 18 has now reached end-of-life and should not be used. For now, Astro will continue to support Node.js 18.20.8, which is the final LTS release of Node.js 18, as well as Node.js 20 and Node.js 22 or later. We will drop support for Node.js 18 in a future release, so we recommend upgrading to Node.js 22 as soon as possible. See Astro’s Node.js support policy for more details.
:warning: Important note for users of Cloudflare Pages: The current build image for Cloudflare Pages uses Node.js 18.17.1 by default, which is no longer supported by Astro. If you are using Cloudflare Pages you should override the default Node.js version to Node.js 22. This does not affect users of Cloudflare Workers, which uses Node.js 22 by default.
3c3b492]:
#13773 3aa5337 Thanks @sijad! - Ignores lightningcss unsupported pseudo-class warning.
#13833 5a6d2ae Thanks @ascorbic! - Fixes an issue where session modules would fail to resolve in Node.js < 20.6
#13383 f7f712c Thanks @Haberkamp! - Stop toolbar settings from overflowing
#13794 85b19d8 Thanks @alexcarpenter! - Exclude pre tags from a11y-no-noninteractive-tabindex audit check.
#13373 50ef568 Thanks @jpwienekus! - Fixes a bug where highlights and tooltips render over the audit list window.
#13769 e9fc456 Thanks @romanstetsyk! - Expand ActionError codes to include all IANA-registered HTTP error codes.
#13668 866285a Thanks @sapphi-red! - Replaces internal CSS chunking behavior for Astro components’ scoped styles to use Vite’s cssScopeTo feature. The feature is a port of Astro’s implementation so this should not change the behavior.
#13761 a2e8463 Thanks @jp-knj! - Adds new content collections errors
#13788 7d0b7ac Thanks @florian-lefebvre! - Fixes a case where an error would not be thrown when using the <Font /> component from the experimental fonts API without adding fonts in the Astro config
#13784 d7a1889 Thanks @florian-lefebvre! - Fixes the experimental fonts API to correctly take config.base, config.build.assets and config.build.assetsPrefix into account
#13777 a56b8ea Thanks @L4Ph! - Fixed an issue where looping GIF animation would stop when converted to WebP
#13566 0489d8f Thanks @TheOtterlord! - Fix build errors being ignored when build.concurrency > 1
#13752 a079c21 Thanks @florian-lefebvre! - Improves handling of font URLs not ending with a file extension when using the experimental fonts API
#13750 7d3127d Thanks @martrapp! - Allows the ClientRouter to open new tabs or windows when submitting forms by clicking while holding the Cmd, Ctrl, or Shift key.
#13765 d874fe0 Thanks @florian-lefebvre! - Fixes a case where font sources with relative protocol URLs would fail when using the experimental fonts API
#13640 5e582e7 Thanks @florian-lefebvre! - Allows inferring weight and style when using the local provider of the experimental fonts API
If you want Astro to infer those properties directly from your local font files, leave them undefined:
{ // No weight specified: infer style: 'normal'; // Do not infer}#13734 30aec73 Thanks @ascorbic! - Loosen content layer schema types
#13751 5816b8a Thanks @florian-lefebvre! - Updates unifont to support subsets when using the google provider with the experimental fonts API
#13756 d4547ba Thanks @florian-lefebvre! - Adds a terminal warning when a remote provider returns no data for a family when using the experimental fonts API
#13742 f599463 Thanks @florian-lefebvre! - Fixes optimized fallback css generation to properly add a src when using the experimental fonts API
#13740 6935540 Thanks @vixalien! - Fix cookies set after middleware did a rewrite with next(url) not being applied
#13759 4a56d0a Thanks @jp-knj! - Improved the error handling of certain error cases.
c3e80c2 Thanks @jsparkdev! - update vite to latest version for fixing CVEb32dffa Thanks @florian-lefebvre! - Updates unifont to fix a case where a unicodeRange related error would be thrown when using the experimental fonts API#13705 28f8716 Thanks @florian-lefebvre! - Updates unifont to latest and adds support for fetch options from remote providers when using the experimental fonts API
#13692 60d5be4 Thanks @Le0Developer! - Fixes a bug where Astro couldn’t probably use inferSize for images that contain apostrophe ' in their name.
#13698 ab98f88 Thanks @sarah11918! - Improves the configuration reference docs for the adapter entry with more relevant text and links.
#13706 b4929ae Thanks @ascorbic! - Fixes typechecking for content config schema
#13653 a7b2dc6 Thanks @florian-lefebvre! - Reduces the amount of preloaded files for the local provider when using the experimental fonts API
#13653 a7b2dc6 Thanks @florian-lefebvre! - Fixes a case where invalid CSS was emitted when using an experimental fonts API family name containing a space
#13703 659904b Thanks @florian-lefebvre! - Fixes a bug where empty fallbacks could not be provided when using the experimental fonts API
#13680 18e1b97 Thanks @florian-lefebvre! - Improves the UnsupportedExternalRedirect error message to include more details such as the concerned destination
#13703 659904b Thanks @ascorbic! - Simplifies styles for experimental responsive images
:warning: BREAKING CHANGE FOR EXPERIMENTAL RESPONSIVE IMAGES ONLY :warning:
The generated styles for image layouts are now simpler and easier to override. Previously the responsive image component used CSS to set the size and aspect ratio of the images, but this is no longer needed. Now the styles just include object-fit and object-position for all images, and sets max-width: 100% for constrained images and width: 100% for full-width images.
This is an implementation change only, and most users will see no change. However, it may affect any custom styles you have added to your responsive images. Please check your rendered images to determine whether any change to your CSS is needed.
The styles now use the :where() pseudo-class, which has a specificity of 0, meaning that it is easy to override with your own styles. You can now be sure that your own classes will always override the applied styles, as will global styles on img.
An exception is Tailwind 4, which uses cascade layers, meaning the rules are always lower specificity. Astro supports browsers that do not support cascade layers, so we cannot use this. If you need to override the styles using Tailwind 4, you must use !important classes. Do check if this is needed though: there may be a layout that is more appropriate for your use case.
#13703 659904b Thanks @ascorbic! - Adds warnings about using local font files in the publicDir when the experimental fonts API is enabled.
#13703 659904b Thanks @ascorbic! - Renames experimental responsive image layout option from “responsive” to “constrained”
:warning: BREAKING CHANGE FOR EXPERIMENTAL RESPONSIVE IMAGES ONLY :warning:
The layout option called "responsive" is renamed to "constrained" to better reflect its behavior.
The previous name was causing confusion, because it is also the name of the feature. The responsive layout option is specifically for images that are displayed at the requested size, unless they do not fit the width of their container, at which point they would be scaled down to fit. They do not get scaled beyond the intrinsic size of the source image, or the width prop if provided.
It became clear from user feedback that many people (understandably) thought that they needed to set layout to responsive if they wanted to use responsive images. They then struggled with overriding styles to make the image scale up for full-width hero images, for example, when they should have been using full-width layout. Renaming the layout to constrained should make it clearer that this layout is for when you want to constrain the maximum size of the image, but allow it to scale-down.
If you set a default image.experimentalLayout in your astro.config.mjs, or set it on a per-image basis using the layout prop, you will need to change all occurences to constrained:
export default { image: { experimentalLayout: 'responsive', experimentalLayout: 'constrained', },}---import { Image } from 'astro:assets';--- <Image src="/image.jpg" layout="responsive" /> <Image src="/image.jpg" layout="constrained" />Please give feedback on the RFC if you have any questions or comments about the responsive images API.
#13660 620d15d Thanks @mingjunlu! - Adds server.allowedHosts docs comment to AstroUserConfig
#13591 5dd2d3f Thanks @florian-lefebvre! - Removes unused code
#13669 73f24d4 Thanks @ematipico! - Fixes an issue where Astro.originPathname wasn’t returning the correct value when using rewrites.
#13674 42388b2 Thanks @florian-lefebvre! - Fixes a case where an experimental fonts API error would be thrown when using another astro:assets API
#13654 4931457 Thanks @florian-lefebvre! - Fixes fontProviders.google() so it can forward options to the unifont provider, when using the experimental fonts API
Updated dependencies [5dd2d3f]:
#13647 ffbe8f2 Thanks @ascorbic! - Fixes a bug that caused a session error to be logged when using actions without sessions
#13646 6744842 Thanks @florian-lefebvre! - Fixes a case where extra font sources were removed when using the experimental fonts API
#13635 d75cac4 Thanks @florian-lefebvre! - The experimental fonts API now generates optimized fallbacks for every weight and style
#13643 67b7493 Thanks @tanishqmanuja! - Fixes a case where the font face src format would be invalid when using the experimental fonts API
#13639 23410c6 Thanks @florian-lefebvre! - Fixes a case where some font families would not be downloaded when using the same font provider several times, using the experimental fonts API
#13632 cb05cfb Thanks @florian-lefebvre! - Improves the optimized fallback name generated by the experimental Fonts API
#13630 3e7db4f Thanks @florian-lefebvre! - Fixes a case where fonts using a local provider would not work because of an invalid generated src
#13634 516de7d Thanks @ematipico! - Fixes a regression where using next('/') didn’t correctly return the requested route.
#13632 cb05cfb Thanks @florian-lefebvre! - Improves the quality of optimized fallbacks generated by the experimental Fonts API
#13616 d475afc Thanks @lfilho! - Fixes a regression where relative static redirects didn’t work as expected.
#13594 dc4a015 Thanks @florian-lefebvre! - Reduces the number of font files downloaded
#13627 7f1a624 Thanks @florian-lefebvre! - Fixes a case where using the <Font /> component would throw a Rollup error during the build
#13626 3838efe Thanks @florian-lefebvre! - Updates fallback font generation to always read font files returned by font providers
#13625 f1311d2 Thanks @florian-lefebvre! - Updates the <Font /> component so that preload links are generated before the style tag if preload is passed
#13622 a70d32a Thanks @ascorbic! - Improve autocomplete for session keys
#13527 2fd6a6b Thanks @ascorbic! - The experimental session API introduced in Astro 5.1 is now stable and ready for production use.
Sessions are used to store user state between requests for on-demand rendered pages. You can use them to store user data, such as authentication tokens, shopping cart contents, or any other data that needs to persist across requests:
---export const prerender = false; // Not needed with 'server' outputconst cart = await Astro.session.get('cart');---
<a href="/checkout">🛒 {cart?.length ?? 0} items</a>Sessions require a storage driver to store the data. The Node, Cloudflare and Netlify adapters automatically configure a default driver for you, but other adapters currently require you to specify a custom storage driver in your configuration.
If you are using an adapter that doesn’t have a default driver, or if you want to choose a different driver, you can configure it using the session configuration option:
import { defineConfig } from 'astro/config';import vercel from '@astrojs/vercel';
export default defineConfig({ adapter: vercel(), session: { driver: 'upstash', },});Sessions are available in on-demand rendered pages, API endpoints, actions and middleware.
In pages and components, you can access the session using Astro.session:
---const cart = await Astro.session.get('cart');---
<a href="/checkout">🛒 {cart?.length ?? 0} items</a>In endpoints, actions, and middleware, you can access the session using context.session:
export async function GET(context) { const cart = await context.session.get('cart'); return Response.json({ cart });}If you attempt to access the session when there is no storage driver configured, or in a prerendered page, the session object will be undefined and an error will be logged in the console:
---export const prerender = true;const cart = await Astro.session?.get('cart'); // Logs an error. Astro.session is undefined---If you were previously using the experimental API, please remove the experimental.session flag from your configuration:
import { defineConfig } from 'astro/config';import node from '@astrojs/node';
export default defineConfig({ adapter: node({ mode: "standalone", }), experimental: { session: true, },});See the sessions guide for more information.
#12775 b1fe521 Thanks @florian-lefebvre! - Adds a new, experimental Fonts API to provide first-party support for fonts in Astro.
This experimental feature allows you to use fonts from both your file system and several built-in supported providers (e.g. Google, Fontsource, Bunny) through a unified API. Keep your site performant thanks to sensible defaults and automatic optimizations including fallback font generation.
To enable this feature, configure an experimental.fonts object with one or more fonts:
import { defineConfig, fontProviders } from "astro/config"
export default defineConfig({ experimental: { fonts: [{ provider: fontProviders.google(), ` name: "Roboto", cssVariable: "--font-roboto", }] }})Then, add a <Font /> component and site-wide styling in your <head>:
---import { Font } from 'astro:assets';---
<Font cssVariable="--font-roboto" preload /><style> body { font-family: var(--font-roboto); }</style>Visit the experimental Fonts documentation for the full API, how to get started, and even how to build your own custom AstroFontProvider if we don’t yet support your preferred font service.
For a complete overview, and to give feedback on this experimental API, see the Fonts RFC and help shape its future.
#13560 df3fd54 Thanks @ematipico! - The virtual module astro:config introduced behind a flag in v5.2.0 is no longer experimental and is available for general use.
This virtual module exposes two sub-paths for type-safe, controlled access to your configuration:
astro:config/client: exposes config information that is safe to expose to the client.astro:config/server: exposes additional information that is safe to expose to the server, such as file and directory paths.Access these in any file inside your project to import and use select values from your Astro config:
import { trailingSlash } from 'astro:config/client';
function addForwardSlash(path) { if (trailingSlash === 'always') { return path.endsWith('/') ? path : path + '/'; } else { return path; }}If you were previously using this feature, please remove the experimental flag from your Astro config:
export default defineConfig({ experimental: { serializeConfig: true }})If you have been waiting for feature stabilization before using configuration imports, you can now do so.
Please see the astro:config reference for more about this feature.
#13578 406501a Thanks @stramel! - The SVG import feature introduced behind a flag in v5.0.0 is no longer experimental and is available for general use.
This feature allows you to import SVG files directly into your Astro project as components and inline them into your HTML.
To use this feature, import an SVG file in your Astro project, passing any common SVG attributes to the imported component.
---import Logo from './path/to/svg/file.svg';---
<Logo width={64} height={64} fill="currentColor" />If you have been waiting for stabilization before using the SVG Components feature, you can now do so.
If you were previously using this feature, please remove the experimental flag from your Astro config:
import { defineConfig } from 'astro'
export default defineConfig({ experimental: { svg: true, }})Additionally, a few features that were available during the experimental stage were removed in a previous release. Please see the v5.6.0 changelog for details if you have not yet already updated your project code for the experimental feature accordingly.
Please see the SVG Components guide in docs for more about this feature.
#13602 3213450 Thanks @natemoo-re! - Updates the Audit dev toolbar app to automatically strip data-astro-source-file and data-astro-source-loc attributes in dev mode.
#13598 f5de51e Thanks @dreyfus92! - Fix routing with base paths when trailingSlash is set to ‘never’. This ensures requests to ‘/base’ are correctly matched when the base path is set to ‘/base’, without requiring a trailing slash.
#13603 d038030 Thanks @sarah11918! - Adds the minimal starter template to the list of create astro options
Good news if you’re taking the introductory tutorial in docs, making a minimal reproduction, or just want to start a project with as little to rip out as possible. Astro’s minimal (empty) template is now back as one of the options when running create astro@latest and starting a new project!
#13606 793ecd9 Thanks @natemoo-re! - Fixes a regression that allowed prerendered code to leak into the server bundle.
#13576 1c60ec3 Thanks @ascorbic! - Reduces duplicate code in server islands scripts by extracting shared logic into a helper function.
#13588 57e59be Thanks @natemoo-re! - Fixes a memory leak when using SVG assets.
#13589 5a0563d Thanks @ematipico! - Deprecates the asset utility function emitESMImage() and adds a new emitImageMetadata() to be used instead
The function
emitESMImage() is now deprecated. It will continue to function, but it is no longer recommended nor supported. This function will be completely removed in a next major release of Astro.
Please replace it with the new functionemitImageMetadata() as soon as you are able to do so:
import { emitESMImage } from "astro/assets/utils";import { emitImageMetadata } from "astro/assets/utils";The new function returns the same signature as the previous one. However, the new function removes two deprecated arguments that were not meant to be exposed for public use: _watchMode and experimentalSvgEnabled. Since it was possible to access these with the old function, you may need to verify that your code still works as intended with emitImageMetadata().
#13596 3752519 Thanks @jsparkdev! - update vite to latest version to fix CVE
#13547 360cb91 Thanks @jsparkdev! - Updates vite to the latest version
#13548 e588527 Thanks @ryuapp! - Support for Deno to install npm pacakges.
Deno requires npm prefix to install packages on npm. For example, to install react, we need to run deno add npm:react. But currently the command executed is deno add react, which doesn’t work. So, we change the package names to have an npm prefix if you are using Deno.
#13587 a0774b3 Thanks @robertoms99! - Fixes an issue with the client router where some attributes of the root element were not updated during swap, including the transition scope.
#13519 3323f5c Thanks @florian-lefebvre! - Refactors some internals to improve Rolldown compatibility
#13545 a7aff41 Thanks @stramel! - Prevent empty attributes from appearing in the SVG output
#13552 9cd0fd4 Thanks @ematipico! - Fixes an issue where Astro validated the i18n configuration incorrectly, causing false positives in downstream libraries.
#13403 dcb9526 Thanks @yurynix! - Adds a new optional prerenderedErrorPageFetch option in the Adapter API to allow adapters to provide custom implementations for fetching prerendered error pages.
Now, adapters can override the default fetch() behavior, for example when fetch() is unavailable or when you cannot call the server from itself.
The following example provides a custom fetch for 500.html and 404.html, reading them from disk instead of performing an HTTP call:
return app.render(request, { prerenderedErrorPageFetch: async (url: string): Promise<Response> => { if (url.includes("/500")) { const content = await fs.promises.readFile("500.html", "utf-8"); return new Response(content, { status: 500, headers: { "Content-Type": "text/html" }, }); } const content = await fs.promises.readFile("404.html", "utf-8"); return new Response(content, { status: 404, headers: { "Content-Type": "text/html" }, });});If no value is provided, Astro will fallback to its default behavior for fetching error pages.
Read more about this feature in the Adapter API reference.
#13482 ff257df Thanks @florian-lefebvre! - Updates Astro config validation to also run for the Integration API. An error log will specify which integration is failing the validation.
Now, Astro will first validate the user configuration, then validate the updated configuration after each integration astro:config:setup hook has run. This means updateConfig() calls will no longer accept invalid configuration.
This fixes a situation where integrations could potentially update a project with a malformed configuration. These issues should now be caught and logged so that you can update your integration to only set valid configurations.
#13405 21e7e80 Thanks @Marocco2! - Adds a new eagerness option for prefetch() when using experimental.clientPrerender
With the experimental clientPrerender flag enabled, you can use the eagerness option on prefetch() to suggest to the browser how eagerly it should prefetch/prerender link targets.
This follows the same API described in the Speculation Rules API and allows you to balance the benefit of reduced wait times against bandwidth, memory, and CPU costs for your site visitors.
For example, you can now use prefetch() programmatically with large sets of links and avoid browser limits in place to guard against over-speculating (prerendering/prefetching too many links). Set eagerness: 'moderate' to take advantage of First In, First Out (FIFO) strategies and browser heuristics to let the browser decide when to prerender/prefetch them and in what order:
<a class="link-moderate" href="/nice-link-1">A Nice Link 1</a><a class="link-moderate" href="/nice-link-2">A Nice Link 2</a><a class="link-moderate" href="/nice-link-3">A Nice Link 3</a><a class="link-moderate" href="/nice-link-4">A Nice Link 4</a>...<a class="link-moderate" href="/nice-link-20">A Nice Link 20</a><script> import { prefetch } from 'astro:prefetch'; const linkModerate = document.getElementsByClassName('link-moderate'); linkModerate.forEach((link) => prefetch(link.getAttribute('href'), { eagerness: 'moderate' }));</script>#13482 ff257df Thanks @florian-lefebvre! - Improves integrations error handling
If an error is thrown from an integration hook, an error log will now provide information about the concerned integration and hook
#13539 c43bf8c Thanks @ascorbic! - Adds a new session.load() method to the experimental session API that allows you to load a session by ID.
When using the experimental sessions API, you don’t normally need to worry about managing the session ID and cookies: Astro automatically reads the user’s cookies and loads the correct session when needed. However, sometimes you need more control over which session to load.
The new load() method allows you to manually load a session by ID. This is useful if you are handling the session ID yourself, or if you want to keep track of a session without using cookies. For example, you might want to restore a session from a logged-in user on another device, or work with an API endpoint that doesn’t use cookies.
import type { APIRoute } from 'astro';
export const GET: APIRoute = async ({ session, request }) => { // Load the session from a header instead of cookies const sessionId = request.headers.get('x-session-id'); await session.load(sessionId); const cart = await session.get('cart'); return Response.json({ cart });};If a session with that ID doesn’t exist, a new one will be created. This allows you to generate a session ID in the client if needed.
For more information, see the experimental sessions docs.
#13488 d777420 Thanks @stramel! - BREAKING CHANGE to the experimental SVG Component API only
Removes some previously available prop, attribute, and configuration options from the experimental SVG API. These items are no longer available and must be removed from your code:
The title prop has been removed until we can settle on the correct balance between developer experience and accessibility. Please replace any title props on your components with aria-label:
<Logo title="My Company Logo" /><Logo aria-label="My Company Logo" />Sprite mode has been temporarily removed while we consider a new implementation that addresses how this feature was being used in practice. This means that there are no longer multiple mode options, and all SVGs will be inline. All instances of mode must be removed from your project as you can no longer control a mode:
<Logo mode="inline" /><Logo />import { defineConfig } from 'astro'
export default defineConfig({ experimental: { svg: { mode: 'sprite' }, svg: true }});The default role is no longer applied due to developer feedback. Please add the appropriate role on each component individually as needed:
<Logo /><Logo role="img" /> // To keep the role that was previously applied by defaultThe size prop has been removed to better work in combination with viewBox and additional styles/attributes. Please replace size with explicit width and height attributes:
<Logo size={64} /><Logo width={64} height={64} />#13429 06de673 Thanks @ematipico! - The ActionAPIContext.rewrite method is deprecated and will be removed in a future major version of Astro
#13524 82cd583 Thanks @ematipico! - Fixes a bug where the functions Astro.preferredLocale and Astro.preferredLocaleList would return the incorrect locales
when the Astro configuration specifies a list of codes. Before, the functions would return the path, instead now the functions
return a list built from codes.
#13526 ff9d69e Thanks @jsparkdev! - update vite to the latest version
#13510 5b14d33 Thanks @florian-lefebvre! - Fixes a case where astro:env secrets used in actions would not be available
#13485 018fbe9 Thanks @ascorbic! - Fixes a bug that caused cookies to ignore custom decode function if has() had been called before
#13505 a98ae5b Thanks @ematipico! - Updates the dependency vite to the latest.
#13483 fc2dcb8 Thanks @ematipico! - Fixes a bug where an Astro adapter couldn’t call the middleware when there isn’t a route that matches the incoming request.
#13457 968e713 Thanks @ascorbic! - Sets correct response status text for custom error pages
#13447 d80ba2b Thanks @ematipico! - Fixes an issue where site was added to the generated redirects.
#13481 e9e9245 Thanks @martrapp! - Makes server island work with the client router again.
#13484 8b5e4dc Thanks @ascorbic! - Display useful errors when config loading fails because of Node addons being disabled on Stackblitz
#13437 013fa87 Thanks @Vardhaman619! - Handle server.allowedHosts when the value is true without attempting to push it into an array.
#13324 ea74336 Thanks @ematipico! - Upgrade to shiki v3
#13372 7783dbf Thanks @ascorbic! - Fixes a bug that caused some very large data stores to save incomplete data.
#13358 8c21663 Thanks @ematipico! - Adds a new function called insertPageRoute to the Astro Container API.
The new function is useful when testing routes that, for some business logic, use Astro.rewrite.
For example, if you have a route /blog/post and for some business decision there’s a rewrite to /generic-error, the container API implementation will look like this:
import Post from '../src/pages/Post.astro';import GenericError from '../src/pages/GenericError.astro';import { experimental_AstroContainer as AstroContainer } from 'astro/container';
const container = await AstroContainer.create();container.insertPageRoute('/generic-error', GenericError);const result = await container.renderToString(Post);console.log(result); // this should print the response from GenericError.astroThis new method only works for page routes, which means that endpoints aren’t supported.
#13426 565583b Thanks @ascorbic! - Fixes a bug that caused the astro add command to ignore the --yes flag for third-party integrations
#13428 9cac9f3 Thanks @matthewp! - Prevent bad value in x-forwarded-host from crashing request
#13432 defad33 Thanks @P4tt4te! - Fix an issue in the Container API, where the renderToString function doesn’t render adequately nested slots when they are components.
Updated dependencies [ea74336]:
#13415 be866a1 Thanks @ascorbic! - Reuses experimental session storage object between requests. This prevents memory leaks and improves performance for drivers that open persistent connections to a database.
#13420 2f039b9 Thanks @ematipico! - It fixes an issue that caused some regressions in how styles are bundled.
#13402 3e7b498 Thanks @ematipico! - Adds a new experimental flag called experimental.preserveScriptOrder that renders <script> and <style> tags in the same order as they are defined.
When rendering multiple <style> and <script> tags on the same page, Astro currently reverses their order in your generated HTML output. This can give unexpected results, for example CSS styles being overridden by earlier defined style tags when your site is built.
With the new preserveScriptOrder flag enabled, Astro will generate the styles in the order they are defined:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental: { preserveScriptOrder: true, },});For example, the following component has two <style> tags, and both define the same style for the body tag:
<p>I am a component</p><style> body { background: red; }</style><style> body { background: yellow; }</style>Once the project is compiled, Astro will create an inline style where yellow appears first, and then red. Ultimately, the red background is applied:
body { background: #ff0;}body { background: red;}When experimental.preserveScriptOrder is set to true, the order of the two styles is kept as it is, and in the style generated red appears first, and then yellow:
body { background: red;}body { background: #ff0;}This is a breaking change to how Astro renders project code that contains multiple <style> and <script> tags in the same component. If you were previously compensating for Astro’s behavior by writing these out of order, you will need to update your code.
This will eventually become the new default Astro behavior, so we encourage you to add this experimental style and script ordering as soon as you are able! This will help us test the new behavior and ensure your code is ready when this becomes the new normal.
For more information as this feature develops, please see the experimental script order docs.
#13352 cb886dc Thanks @delucis! - Adds support for a new experimental.headingIdCompat flag
By default, Astro removes a trailing - from the end of IDs it generates for headings ending with
special characters. This differs from the behavior of common Markdown processors.
You can now disable this behavior with a new configuration flag:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental: { headingIdCompat: true, },});This can be useful when heading IDs and anchor links need to behave consistently across your site and other platforms such as GitHub and npm.
If you are using the rehypeHeadingIds plugin directly, you can also pass this new option:
import { defineConfig } from 'astro/config';import { rehypeHeadingIds } from '@astrojs/markdown-remark';import { otherPluginThatReliesOnHeadingIDs } from 'some/plugin/source';
export default defineConfig({ markdown: { rehypePlugins: [ [rehypeHeadingIds, { experimentalHeadingIdCompat: true }], otherPluginThatReliesOnHeadingIDs, ], },});#13311 a3327ff Thanks @chrisirhc! - Adds a new configuration option for Markdown syntax highlighting excludeLangs
This option provides better support for diagramming tools that rely on Markdown code blocks, such as Mermaid.js and D2 by allowing you to exclude specific languages from Astro’s default syntax highlighting.
This option allows you to avoid rendering conflicts with tools that depend on the code not being highlighted without forcing you to disable syntax highlighting for other code blocks.
The following example configuration will exclude highlighting for mermaid and math code blocks:
import { defineConfig } from 'astro/config';
export default defineConfig({ markdown: { syntaxHighlight: { type: 'shiki', excludeLangs: ['mermaid', 'math'], }, },});Read more about this new option in the Markdown syntax highlighting configuration docs.
#13404 4e78b4d Thanks @ascorbic! - Fixes a bug in error handling that saving a content file with a schema error would display an “unhandled rejection” error instead of the correct schema error
#13379 d59eb22 Thanks @martrapp! - Fixes an edge case where the client router executed scripts twice when used with a custom swap function that only swaps parts of the DOM.
#13393 6b8fdb8 Thanks @renovate! - Updates primsjs to version 1.30.0, which adds support for more languages and fixes a security advisory which does not affect Astro.
#13374 7b75bc5 Thanks @ArmandPhilippot! - Fixes the documentation of the i18n configuration where manual was presented as a key of routing instead of an available value.
#13380 9bfa6e6 Thanks @martrapp! - Fixes an issue where astro:page-load fires before all scripts are executed
#13407 0efdc22 Thanks @ascorbic! - Displays correct error message when sharp isn’t installed
Updated dependencies [cb886dc, a3327ff]:
#13381 249d52a Thanks @martrapp! - Adds the types property to the viewTransition object when the ClientRouter simulates parts of the View Transition API on browsers w/o native support.
#13367 3ce4ad9 Thanks @ematipico! - Adds documentation to various utility functions used for remote image services
#13347 d83f92a Thanks @bluwy! - Updates internal CSS chunking behavior for Astro components’ scoped styles. This may result in slightly more CSS chunks created, but should allow the scoped styles to only be included on pages that use them.
#13388 afadc70 Thanks @ematipico! - Fixes a bug where astro:config/server and astro:config/client had incorrect types.
#13355 042d1de Thanks @ematipico! - Adds documentation to the assets utilities for remote service images.
#13395 6d1c63f Thanks @bluwy! - Uses package-manager-detector to detect the package manager used in the project
#13363 a793636 Thanks @ematipico! - Fixes an issue where the internal function makeSvgComponent was incorrectly exposed as a public API.
Updated dependencies [042d1de]:
#12985 84e94cc Thanks @matthewp! - Prevent re-executing scripts in client router
#13349 50e2e0b Thanks @ascorbic! - Correctly escapes attributes in Markdown images
#13262 0025df3 Thanks @ematipico! - Refactor Astro Actions to not use a middleware. Doing so should avoid unexpected issues when using the Astro middleware at the edge.
#13336 8f632ef Thanks @ematipico! - Fixes a regression where some asset utilities were move across monorepo, and not re-exported anymore.
#13320 b5dabe9 Thanks @{! - Adds support for typing experimental session data
You can add optional types to your session data by creating a src/env.d.ts file in your project that extends the global App.SessionData interface. For example:
declare namespace App { interface SessionData {
id: string; email: string; }; lastLogin: Date; }}Any keys not defined in this interface will be treated as any.
Then when you access Astro.session in your components, any defined keys will be typed correctly:
---const user = await Astro.session.get('user');// ^? const: user: { id: string; email: string; } | undefined
const something = await Astro.session.get('something');// ^? const: something: any
Astro.session.set('user', 1);// ^? Argument of type 'number' is not assignable to parameter of type '{ id: string; email: string; }'.---See the experimental session docs for more information.
#13330 5e7646e Thanks @ematipico! - Fixes an issue with the conditional rendering of scripts.
This change updates a v5.0 breaking change when experimental.directRenderScript became the default script handling behavior.
If you have already successfully upgraded to Astro v5, you may need to review your script tags again and make sure they still behave as desired after this release. See the v5 Upgrade Guide for more details.
#12052 5be12b2 Thanks @Fryuni! - Exposes extra APIs for scripting and testing.
Two new helper functions exported from astro/config:
mergeConfig() allows users to merge partially defined Astro configurations on top of a base config while following the merge rules of updateConfig() available for integrations.validateConfig() allows users to validate that a given value is a valid Astro configuration and fills in default values as necessary.These helpers are particularly useful for integration authors and for developers writing scripts that need to manipulate Astro configurations programmatically.
The build API now receives a second optional BuildOptions argument where users can specify:
devOutput (default false): output a development-based build similar to code transformed in astro dev.teardownCompiler (default true): teardown the compiler WASM instance after build.These options provide more control when running Astro builds programmatically, especially for testing scenarios or custom build pipelines.
#13278 4a43c4b Thanks @ematipico! - Adds a new configuration option server.allowedHosts and CLI option --allowed-hosts.
Now you can specify the hostnames that the dev and preview servers are allowed to respond to. This is useful for allowing additional subdomains, or running the dev server in a web container.
allowedHosts checks the Host header on HTTP requests from browsers and if it doesn’t match, it will reject the request to prevent CSRF and XSS attacks.
astro dev --allowed-hosts=foo.bar.example.com,bar.example.comastro preview --allowed-hosts=foo.bar.example.com,bar.example.comimport { defineConfig } from 'astro/config';
export default defineConfig({ server: { allowedHosts: ['foo.bar.example.com', 'bar.example.com'], },});This feature is the same as Vite’s server.allowHosts configuration.
#13254 1e11f5e Thanks @p0lyw0lf! - Adds the ability to process and optimize remote images in Markdown files
Previously, Astro only allowed local images to be optimized when included using ![]() syntax in plain Markdown files. Astro’s image service could only display remote images without any processing.
Now, Astro’s image service can also optimize remote images written in standard Markdown syntax. This allows you to enjoy the benefits of Astro’s image processing when your images are stored externally, for example in a CMS or digital asset manager.
No additional configuration is required to use this feature! Any existing remote images written in Markdown will now automatically be optimized. To opt-out of this processing, write your images in Markdown using the HTML <img> tag instead. Note that images located in your public/ folder are still never processed.
#13256 509fa67 Thanks @p0lyw0lf! - Adds experimental responsive image support in Markdown
Previously, the experimental.responsiveImages feature could only provide responsive images when using the <Image /> and <Picture /> components.
Now, images written with the ![]() Markdown syntax in Markdown and MDX files will generate responsive images by default when using this experimental feature.
To try this experimental feature, set experimental.responsiveImages to true in your astro.config.mjs file:
{ experimental: { responsiveImages: true, },}Learn more about using this feature in the experimental responsive images feature reference.
For a complete overview, and to give feedback on this experimental API, see the Responsive Images RFC.
#13323 80926fa Thanks @ematipico! - Updates esbuild and vite to the latest to avoid false positives audits warnings caused by esbuild.
#13313 9e7c71d Thanks @martrapp! - Fixes an issue where a form field named “attributes” shadows the form.attributes property.
#12052 5be12b2 Thanks @Fryuni! - Fixes incorrect config update when calling updateConfig from astro:build:setup hook.
The function previously called a custom update config function made for merging an Astro config. Now it calls the appropriate mergeConfig() utility exported by Vite that updates functional options correctly.
#13303 5f72a58 Thanks @ematipico! - Fixes an issue where the dev server was applying second decoding of the URL of the incoming request, causing issues for certain URLs.
Updated dependencies [1e11f5e, 1e11f5e]:
#13233 32fafeb Thanks @joshmkennedy! - Ensures consistent behaviour of Astro.rewrite/ctx.rewrite when using base and trailingSlash options.
#13003 ea79054 Thanks @chaegumi! - Fixes a bug that caused the vite.base value to be ignored when running astro dev
#13299 2e1321e Thanks @bluwy! - Uses tinyglobby for globbing files
#13233 32fafeb Thanks @joshmkennedy! - Ensures that Astro.url/ctx.url is correctly updated with the base path after rewrites.
This change fixes an issue where Astro.url/ctx.url did not include the configured base path after Astro.rewrite was called. Now, the base path is correctly reflected in Astro.url.
Previously, any rewrites performed through Astro.rewrite/ctx.rewrite failed to append the base path to Astro.url/ctx.rewrite, which could lead to incorrect URL handling in downstream logic. By fixing this, we ensure that all routes remain consistent and predictable after a rewrite.
If you were relying on the work around of including the base path in astro.rewrite you can now remove it from the path.
#13210 344e9bc Thanks @VitaliyR! - Handle HEAD requests to an endpoint when a handler is not defined.
If an endpoint defines a handler for GET, but does not define a handler for HEAD, Astro will call the GET handler and return the headers and status but an empty body.
#13195 3b66955 Thanks @MatthewLymer! - Improves SSR performance for synchronous components by avoiding the use of Promises. With this change, SSR rendering of on-demand pages can be up to 4x faster.
#13145 8d4e566 Thanks @ascorbic! - Adds support for adapters auto-configuring experimental session storage drivers.
Adapters can now configure a default session storage driver when the experimental.session flag is enabled. If a hosting platform has a storage primitive that can be used for session storage, the adapter can automatically configure the session storage using that driver. This allows Astro to provide a more seamless experience for users who want to use sessions without needing to manually configure the session storage.
#13145 8d4e566 Thanks @ascorbic! - :warning: BREAKING CHANGE FOR EXPERIMENTAL SESSIONS ONLY :warning:
Changes the experimental.session option to a boolean flag and moves session config to a top-level value. This change is to allow the new automatic session driver support. You now need to separately enable the experimental.session flag, and then configure the session driver using the top-level session key if providing manual configuration.
defineConfig({ // ... experimental: { session: { driver: 'upstash', }, session: true, }, session: { driver: 'upstash', },});You no longer need to configure a session driver if you are using an adapter that supports automatic session driver configuration and wish to use its default settings.
defineConfig({ adapter: node({ mode: "standalone", }), experimental: { session: { driver: 'fs', cookie: 'astro-cookie', }, session: true, }, session: { cookie: 'astro-cookie', },});However, you can still manually configure additional driver options or choose a non-default driver to use with your adapter with the new top-level session config option. For more information, see the experimental session docs.
#13101 2ed67d5 Thanks @corneliusroemer! - Fixes a bug where HEAD and OPTIONS requests for non-prerendered pages were incorrectly rejected with 403 FORBIDDEN
#13188 7bc8256 Thanks @ematipico! - Fixes the wording of the an error message
#13205 9d56602 Thanks @ematipico! - Fixes and issue where a server island component returns 404 when base is configured in i18n project.
#13212 fb38840 Thanks @joshmkennedy! - An additional has been added during the build command to add clarity around output and buildOutput.
#13213 6bac644 Thanks @joshmkennedy! - Allows readonly arrays to be passed to the paginate() function
#13133 e76aa83 Thanks @ematipico! - Fixes a bug where Astro was failing to build an external redirect when the middleware was triggered
#13119 ac43580 Thanks @Hacksore! - Adds extra guidance in the terminal when using the astro add tailwind CLI command
Now, users are given a friendly reminder to import the stylesheet containing their Tailwind classes into any pages where they want to use Tailwind. Commonly, this is a shared layout component so that Tailwind styling can be used on multiple pages.
#13113 3a26e45 Thanks @unprintable123! - Fixes the bug that rewrite will pass encoded url to the dynamic routing and cause params mismatch.
#13111 23978dd Thanks @ascorbic! - Fixes a bug that caused injected endpoint routes to return not found when trailingSlash was set to always
#13112 0fa5c82 Thanks @ematipico! - Fixes a bug where the i18n middleware was blocking a server island request when the prefixDefaultLocale option is set to true
#12994 5361755 Thanks @ascorbic! - Redirects trailing slashes for on-demand pages
When the trailingSlash option is set to always or never, on-demand rendered pages will now redirect to the correct URL when the trailing slash doesn’t match the configuration option. This was previously the case for static pages, but now works for on-demand pages as well.
Now, it doesn’t matter whether your visitor navigates to /about/, /about, or even /about///. In production, they’ll always end up on the correct page. For GET requests, the redirect will be a 301 (permanent) redirect, and for all other request methods, it will be a 308 (permanent, and preserve the request method) redirect.
In development, you’ll see a helpful 404 page to alert you of a trailing slash mismatch so you can troubleshoot routes.
#12979 e621712 Thanks @ematipico! - Adds support for redirecting to external sites with the redirects configuration option.
Now, you can redirect routes either internally to another path or externally by providing a URL beginning with http or https:
import { defineConfig } from 'astro/config';
export default defineConfig({ redirects: { '/blog': 'https://example.com/blog', '/news': { status: 302, destination: 'https://example.com/news', }, },});#13084 0f3be31 Thanks @ematipico! - Adds a new experimental virtual module astro:config that exposes a type-safe subset of your astro.config.mjs configuration
The virtual module exposes two sub-paths for controlled access to your configuration:
astro:config/client: exposes config information that is safe to expose to the client.astro:config/server: exposes additional information that is safe to expose to the server, such as file/dir paths.To enable this new virtual module, add the experimental.serializeManifest feature flag to your Astro config:
import { defineConfig } from 'astro/config';export default defineConfig({ experimental: { serializeManifest: true, },});Then, you can access the module in any file inside your project to import and use values from your Astro config:
import { trailingSlash } from 'astro:config/client';
function addForwardSlash(path) { if (trailingSlash === 'always') { return path.endsWith('/') ? path : path + '/'; } else { return path; }}For a complete overview, and to give feedback on this experimental API, see the Serialized Manifest RFC.
#13049 2ed4bd9 Thanks @florian-lefebvre! - Updates astro add tailwind to add the @tailwindcss/vite plugin instead of the @astrojs/tailwind integration
#12994 5361755 Thanks @ascorbic! - Returns a more helpful 404 page in dev if there is a trailing slash mismatch between the route requested and the trailingSlash configuration
#12666 037495d Thanks @Thodor12! - Added additional generated typings for the content layer
Updated dependencies [5361755, db252e0]:
#13058 1a14b53 Thanks @ascorbic! - Fixes broken type declaration
#13059 e36837f Thanks @ascorbic! - Fixes a bug that caused tsconfig path aliases to break if there was more than one wildcard pattern
#13045 c7f1366 Thanks @mtwilliams-code! - Fixes a bug where the some utility functions of the astro:i18n virtual module would return an incorrect result when trailingSlash is set to never
#12986 8911bda Thanks @wetheredge! - Updates types and dev toolbar for ARIA 1.2 attributes and roles
#12892 8f520f1 Thanks @louisescher! - Adds a more descriptive error when a content collection entry has an invalid ID.
#13031 f576519 Thanks @florian-lefebvre! - Updates the server islands encoding logic to only escape the script end tag open delimiter and opening HTML comment syntax
#13026 1d272f6 Thanks @ascorbic! - Fixes a regression that prevented the import of Markdown files as raw text or URLs.
#12998 9ce0038 Thanks @Kynson! - Fixes the issue that audit incorrectly flag images as above the fold when the scrolling container is not body
#12990 2e12f1d Thanks @ascorbic! - Fixes a bug that caused references to be incorrectly reported as invalid
#12984 2d259cf Thanks @ascorbic! - Fixes a bug in dev where files would stop being watched if the Astro config file was edited
#12984 2d259cf Thanks @ascorbic! - Fixes a bug where the content layer would use an outdated version of the Astro config if it was edited in dev
#12982 429aa75 Thanks @bluwy! - Fixes an issue where server islands do not work in projects that use an adapter but only have prerendered pages. If an adapter is added, the server island endpoint will now be added by default.
#12995 78fd73a Thanks @florian-lefebvre! - Fixes a case where astro:actions types would not work when using src/actions.ts
#12733 bbf1d88 Thanks @ascorbic! - Fixes a bug that caused the dev server to return an error if requesting ”//”
#13001 627aec3 Thanks @ascorbic! - Fixes a bug that caused Astro to attempt to inject environment variables into non-source files, causing performance problems and broken builds
#12361 3d89e62 Thanks @LunaticMuch! - Upgrades the esbuild version to match vite
#12980 1a026af Thanks @florian-lefebvre! - Fixes a case where setting the status of a page to 404 in development would show the default 404 page (or custom one if provided) instead of using the current page
#12182 c30070b Thanks @braden-w! - Improves matching of 404 and 500 routes
Updated dependencies [3d89e62]:
#12956 3aff68a Thanks @kaytwo! - Removes encryption of empty props to allow server island cacheability
#12977 80067c0 Thanks @florian-lefebvre! - Fixes a case where accessing astro:env APIs or import.meta.env inside the content config file would not work
#12839 57be349 Thanks @mtwilliams-code! - Fix Astro.currentLocale returning the incorrect locale when using fallback rewrites in SSR mode
#12962 4b7a2ce Thanks @ascorbic! - Skips updating content layer files if content is unchanged
#12942 f00c2dd Thanks @liruifengv! - Improves the session error messages
#12966 d864e09 Thanks @ascorbic! - Ensures old content collection entry is deleted if a markdown frontmatter slug is changed in dev
#12934 673a518 Thanks @ematipico! - Fixes a regression where the Astro Container didn’t work during the build, using pnpm
#12955 db447f2 Thanks @martrapp! - Lets TypeScript know about the “blocking” and “disabled” attributes of the <link> element.
#12922 faf74af Thanks @adamchal! - Improves performance of static asset generation by fixing a bug that caused image transforms to be performed serially. This fix ensures that processing uses all CPUs when running in a multi-core environment.
#12947 3c2292f Thanks @ascorbic! - Fixes a bug that caused empty content collections when running dev with NODE_ENV set
#12927 ad2a752 Thanks @ematipico! - Fixes a bug where Astro attempted to decode a request URL multiple times, resulting in an unexpected behaviour when decoding the character %
#12912 0c0c66b Thanks @florian-lefebvre! - Improves the config error for invalid combinations of context and access properties under env.schema
#12935 3d47e6b Thanks @AirBorne04! - Fixes an issue where Astro.locals coming from an adapter weren’t available in the 404.astro, when using the astro dev command,
#12925 44841fc Thanks @ascorbic! - Ensures image styles are not imported unless experimental responsive images are enabled
#12926 8e64bb7 Thanks @oliverlynch! - Improves remote image cache efficiency by separating image data and metadata into a binary and sidecar JSON file.
#12920 8b9d530 Thanks @bluwy! - Processes markdown with empty body as remark and rehype plugins may add additional content or frontmatter
#12918 fd12a26 Thanks @lameuler! - Fixes a bug where the logged output path does not match the actual output path when using build.format: 'preserve'
#12676 2ffc0fc Thanks @koyopro! - Allows configuring Astro modules TypeScript compilation with the vite.esbuild config
#12938 dbb04f3 Thanks @ascorbic! - Fixes a bug where content collections would sometimes appear empty when first running astro dev
#12937 30edb6d Thanks @ematipico! - Fixes a bug where users could use Astro.request.headers during a rewrite inside prerendered routes. This an invalid behaviour, and now Astro will show a warning if this happens.
#12937 30edb6d Thanks @ematipico! - Fixes an issue where the use of Astro.rewrite would trigger the invalid use of Astro.request.headers
#12877 73a0788 Thanks @bluwy! - Fixes sourcemap warning generated by the astro:server-islands Vite plugin
#12906 2d89492 Thanks @ascorbic! - Fixes a bug that caused pages that return an empty array from getStaticPath to match every path
011fa0f Thanks @florian-lefebvre! - Fixes a case where astro:content types would be erased when restarting the dev server
#12907 dbf1275 Thanks @florian-lefebvre! - Fixes a regression around the server islands route, which was not passed to the adapters astro:build:done hook
#12818 579bd93 Thanks @ascorbic! - Fixes race condition where dev server would attempt to load collections before the content had loaded
#12883 fbac92f Thanks @kaytwo! - Fixes a bug where responses can be returned before session data is saved
#12815 3acc654 Thanks @ericswpark! - Some non-index files that were incorrectly being treated as index files are now excluded
#12884 d7e97a7 Thanks @ascorbic! - Adds render() to stub content types
#12883 fbac92f Thanks @kaytwo! - Fixes a bug where session data could be corrupted if it is changed after calling .set()
#12827 7b5dc6f Thanks @sinskiy! - Fixes an issue when crawlers try to index Server Islands thinking that Server Islands are pages
#12798 7b0cb85 Thanks @ascorbic! - Improves warning logs for invalid content collection configuration
#12781 96c4b92 Thanks @ascorbic! - Fixes a regression that caused default() to not work with reference()
#12820 892dd9f Thanks @ascorbic! - Fixes a bug that caused cookies to not be deleted when destroying a session
#12864 440d8a5 Thanks @kaytwo! - Fixes a bug where the session ID wasn’t correctly regenerated
#12768 524c855 Thanks @ematipico! - Fixes an issue where Astro didn’t print error logs when Astro Islands were used in incorrect cases.
#12814 f12f111 Thanks @ematipico! - Fixes an issue where Astro didn’t log anything in case a file isn’t created during the build.
#12875 e109002 Thanks @ascorbic! - Fixes a bug in emulated legacy collections where the entry passed to the getCollection filter function did not include the legacy entry fields.
#12768 524c855 Thanks @ematipico! - Fixes an issue where Astro was printing the incorrect output format when running the astro build command
#12810 70a9f0b Thanks @louisescher! - Fixes server islands failing to check content-type header under certain circumstances
Sometimes a reverse proxy or similar service might modify the content-type header to include the charset or other parameters in the media type of the response. This previously wasn’t handled by the client-side server island script and thus removed the script without actually placing the requested content in the DOM. This fix makes it so the script checks if the header starts with the proper content type instead of exactly matching text/html, so the following will still be considered a valid header: text/html; charset=utf-8
#12816 7fb2184 Thanks @ematipico! - Fixes an issue where an injected route entrypoint wasn’t correctly marked because the resolved file path contained a query parameter.
This fixes some edge case where some injected entrypoint were not resolved when using an adapter.
#12441 b4fec3c Thanks @ascorbic! - Adds experimental session support
Sessions are used to store user state between requests for server-rendered pages, such as login status, shopping cart contents, or other user-specific data.
---export const prerender = false; // Not needed in 'server' modeconst cart = await Astro.session.get('cart');---
<a href="/checkout">🛒 {cart?.length ?? 0} items</a>Sessions are available in on-demand rendered/SSR pages, API endpoints, actions and middleware. To enable session support, you must configure a storage driver.
If you are using the Node.js adapter, you can use the fs driver to store session data on the filesystem:
{ adapter: node({ mode: 'standalone' }), experimental: { session: { // Required: the name of the unstorage driver driver: "fs", }, },}If you are deploying to a serverless environment, you can use drivers such as redis, netlify-blobs, vercel-kv, or cloudflare-kv-binding and optionally pass additional configuration options.
For more information, including using the session API with other adapters and a full list of supported drivers, see the docs for experimental session support. For even more details, and to leave feedback and participate in the development of this feature, the Sessions RFC.
#12426 3dc02c5 Thanks @oliverlynch! - Improves asset caching of remote images
Astro will now store entity tags and the Last-Modified date for cached remote images and use them to revalidate the cache when it goes stale.
#12721 c9d5110 Thanks @florian-lefebvre! - Adds a new getActionPath() helper available from astro:actions
Astro 5.1 introduces a new helper function, getActionPath() to give you more flexibility when calling your action.
Calling getActionPath() with your action returns its URL path so you can make a fetch() request with custom headers, or use your action with an API such as navigator.sendBeacon(). Then, you can handle the custom-formatted returned data as needed, just as if you had called an action directly.
This example shows how to call a defined like action passing the Authorization header and the keepalive option:
<script> import { actions, getActionPath } from 'astro:actions';
await fetch(getActionPath(actions.like), { method: 'POST', headers: { 'Content-Type': 'application/json', Authorization: 'Bearer YOUR_TOKEN', }, body: JSON.stringify({ id: 'YOUR_ID' }), keepalive: true, });</script>This example shows how to call the same like action using the sendBeacon API:
<script> import { actions, getActionPath } from 'astro:actions';
navigator.sendBeacon( getActionPath(actions.like), new Blob([JSON.stringify({ id: 'YOUR_ID' })], { type: 'application/json', }), );</script>#12786 e56af4a Thanks @ematipico! - Fixes an issue where Astro i18n didn’t properly show the 404 page when using fallback and the option prefixDefaultLocale set to true.
#12758 483da89 Thanks @delucis! - Adds types for ?url&inline and ?url&no-inline import queries added in Vite 6
#12763 8da2318 Thanks @rbsummers! - Fixed changes to vite configuration made in the astro:build:setup integration hook having no effect when target is “client”
#12767 36c1e06 Thanks @ascorbic! - Clears the content layer cache when the Astro config is changed
#12597 564ac6c Thanks @florian-lefebvre! - Fixes an issue where image and server islands routes would not be passed to the astro:routes:resolved hook during builds
#12718 ccc5ad1 Thanks @ematipico! - Fixes an issue where Astro couldn’t correctly handle i18n fallback when using the i18n middleware
#12728 ee66a45 Thanks @argyleink! - Adds type support for the closedby attribute for <dialog> elements
#12709 e3bfd93 Thanks @mtwilliams-code! - Fixes a bug where Astro couldn’t correctly parse params and props when receiving i18n fallback URLs
#12657 14dffcc Thanks @darkmaga! - Trailing slash support for actions
#12715 029661d Thanks @ascorbic! - Fixes a bug that caused errors in dev when editing sites with large numbers of MDX pages
#12729 8b1cecd Thanks @JoeMorgan! - “Added inert to htmlBooleanAttributes”
#12726 7c7398c Thanks @florian-lefebvre! - Fixes a case where failing content entries in astro check would not be surfaced
#12705 0d1eab5 Thanks @ascorbic! - Fixes a bug where MDX files with certain characters in the name would cause builds to fail
#12707 2aaed2d Thanks @ematipico! - Fixes a bug where the middleware was incorrectly imported during the build
#12697 1c4a032 Thanks @ascorbic! - Fix a bug that caused builds to fail if an image had a quote mark in its name
#12694 495f46b Thanks @ematipico! - Fixes a bug where the experimental feature experimental.svg was incorrectly used when generating ESM images
#12658 3169593 Thanks @jurajkapsz! - Fixes astro info copy to clipboard process not returning to prompt in certain cases.
#12712 b01c74a Thanks @ascorbic! - Fixes a bug which misidentified pages as markdown if a query string ended in a markdown extension
#12653 e21c7e6 Thanks @sarah11918! - Updates a reference in an error message
#12585 a9373c0 Thanks @florian-lefebvre! - Fixes a case where process.env would be frozen despite changes made to environment variables in development
#12695 a203d5d Thanks @ascorbic! - Throws a more helpful error when images are missing
Updated dependencies [f13417b, 87231b1, a71e9b9]:
e7d14c3 Thanks @ematipico! - Fixes an issue where the checkOrigin feature wasn’t correctly checking the content-type header#12645 8704c54 Thanks @sarah11918! - Updates some reference links in error messages for new v5 docs.
#12641 48ca399 Thanks @ascorbic! - Fixes a bug where astro info --copy wasn’t working correctly on macOS systems.
#12461 62939ad Thanks @kyr0! - Removes the misleading log message telling that a custom renderer is not recognized while it clearly is and works.
#12642 ff18b9c Thanks @ematipico! - Provides more information when logging a warning for accessing Astro.request.headers in prerendered pages
#12634 03958d9 Thanks @delucis! - Improves error message formatting for user config and content collection frontmatter
#12547 6b6e18d Thanks @mtwilliams-code! - Fixes a bug where URL search parameters weren’t passed when using the i18n fallback feature.
#12449 e6b8017 Thanks @apatel369! - Fixes an issue where the custom assetFileNames configuration caused assets to be incorrectly moved to the server directory instead of the client directory, resulting in 404 errors when accessed from the client side.
#12518 e216250 Thanks @ematipico! - Fixes an issue where SSR error pages would return duplicated custom headers.
#12625 74bfad0 Thanks @ematipico! - Fixes an issue where the experimental.svg had incorrect type, resulting in some errors in the editors.
#12631 dec0305 Thanks @ascorbic! - Fixes a bug where the class attribute was rendered twice on the image component
#12623 0e4fecb Thanks @ascorbic! - Correctly handles images in content collections with uppercase file extensions
#12633 8a551c1 Thanks @bluwy! - Cleans up content layer sync during builds and programmatic sync() calls
#12640 22e405a Thanks @ascorbic! - Fixes a bug that caused content collections to be returned empty when run in a test environment
#12613 306c9f9 Thanks @matthewp! - Fix use of cloned requests in middleware with clientAddress
When using context.clientAddress or Astro.clientAddress Astro looks up the address in a hidden property. Cloning a request can cause this hidden property to be lost.
The fix is to pass the address as an internal property instead, decoupling it from the request.
#11798 e9e2139 Thanks @matthewp! - Unflag globalRoutePriority
The previously experimental feature globalRoutePriority is now the default in Astro 5.
This was a refactoring of route prioritization in Astro, making it so that injected routes, file-based routes, and redirects are all prioritized using the same logic. This feature has been enabled for all Starlight projects since it was added and should not affect most users.
#11864 ee38b3a Thanks @ematipico! - ### [changed]: entryPoint type inside the hook astro:build:ssr
In Astro v4.x, the entryPoint type was RouteData.
Astro v5.0 the entryPoint type is IntegrationRouteData, which contains a subset of the RouteData type. The fields isIndex and fallbackRoutes were removed.
Update your adapter to change the type of entryPoint from RouteData to IntegrationRouteData.
import type {RouteData} from 'astro';import type {IntegrationRouteData} from "astro"
function useRoute(route: RouteData) {function useRoute(route: IntegrationRouteData) {
}#12524 9f44019 Thanks @bluwy! - Bumps Vite to ^6.0.1 and handles its breaking changes
#10742 b6fbdaa Thanks @ematipico! - The lowest version of Node supported by Astro is now Node v18.17.1 and higher.
#11916 46ea29f Thanks @bluwy! - Updates how the build.client and build.server option values get resolved to match existing documentation. With this fix, the option values will now correctly resolve relative to the outDir option. So if outDir is set to ./dist/nested/, then by default:
build.client will resolve to <root>/dist/nested/client/build.server will resolve to <root>/dist/nested/server/Previously the values were incorrectly resolved:
build.client was resolved to <root>/dist/nested/dist/client/build.server was resolved to <root>/dist/nested/dist/server/If you were relying on the previous build paths, make sure that your project code is updated to the new build paths.
#11982 d84e444 Thanks @Princesseuh! - Adds a default exclude and include value to the tsconfig presets. {projectDir}/dist is now excluded by default, and {projectDir}/.astro/types.d.ts and {projectDir}/**/* are included by default.
Both of these options can be overridden by setting your own values to the corresponding settings in your tsconfig.json file.
#11861 3ab3b4e Thanks @bluwy! - Cleans up Astro-specfic metadata attached to vfile.data in Remark and Rehype plugins. Previously, the metadata was attached in different locations with inconsistent names. The metadata is now renamed as below:
vfile.data.__astroHeadings -> vfile.data.astro.headingsvfile.data.imagePaths -> vfile.data.astro.imagePathsThe types of imagePaths has also been updated from Set<string> to string[]. The vfile.data.astro.frontmatter metadata is left unchanged.
While we don’t consider these APIs public, they can be accessed by Remark and Rehype plugins that want to re-use Astro’s metadata. If you are using these APIs, make sure to access them in the new locations.
#11987 bf90a53 Thanks @florian-lefebvre! - The locals object can no longer be overridden
Middleware, API endpoints, and pages can no longer override the locals object in its entirety. You can still append values onto the object, but you can not replace the entire object and delete its existing values.
If you were previously overwriting like so:
ctx.locals = { one: 1, two: 2,};This can be changed to an assignment on the existing object instead:
Object.assign(ctx.locals, { one: 1, two: 2,});#11908 518433e Thanks @Princesseuh! - The image.endpoint config now allow customizing the route of the image endpoint in addition to the entrypoint. This can be useful in niche situations where the default route /_image conflicts with an existing route or your local server setup.
import { defineConfig } from 'astro/config';
defineConfig({ image: { endpoint: { route: '/image', entrypoint: './src/image_endpoint.ts', }, },});#12008 5608338 Thanks @Princesseuh! - Welcome to the Astro 5 beta! This release has no changes from the latest alpha of this package, but it does bring us one step closer to the final, stable release.
Starting from this release, no breaking changes will be introduced unless absolutely necessary.
To learn how to upgrade, check out the Astro v5.0 upgrade guide in our beta docs site.
#11679 ea71b90 Thanks @florian-lefebvre! - The astro:env feature introduced behind a flag in v4.10.0 is no longer experimental and is available for general use. If you have been waiting for stabilization before using astro:env, you can now do so.
This feature lets you configure a type-safe schema for your environment variables, and indicate whether they should be available on the server or the client.
To configure a schema, add the env option to your Astro config and define your client and server variables. If you were previously using this feature, please remove the experimental flag from your Astro config and move your entire env configuration unchanged to a top-level option.
import { defineConfig, envField } from 'astro/config';
export default defineConfig({ env: { schema: { API_URL: envField.string({ context: 'client', access: 'public', optional: true }), PORT: envField.number({ context: 'server', access: 'public', default: 4321 }), API_SECRET: envField.string({ context: 'server', access: 'secret' }), }, },});You can import and use your defined variables from the appropriate /client or /server module:
---import { API_URL } from 'astro:env/client';import { API_SECRET_TOKEN } from 'astro:env/server';
const data = await fetch(`${API_URL}/users`, { method: 'GET', headers: { 'Content-Type': 'application/json', Authorization: `Bearer ${API_SECRET_TOKEN}`, },});---
<script> import { API_URL } from 'astro:env/client';
fetch(`${API_URL}/ping`);</script>Please see our guide to using environment variables for more about this feature.
#11806 f7f2338 Thanks @Princesseuh! - Removes the assets property on supportedAstroFeatures for adapters, as it did not reflect reality properly in many cases.
Now, relating to assets, only a single sharpImageService property is available, determining if the adapter is compatible with the built-in sharp image service.
#11864 ee38b3a Thanks @ematipico! - ### [changed]: routes type inside the hook astro:build:done
In Astro v4.x, the routes type was RouteData.
Astro v5.0 the routes type is IntegrationRouteData, which contains a subset of the RouteData type. The fields isIndex and fallbackRoutes were removed.
Update your adapter to change the type of routes from RouteData to IntegrationRouteData.
import type {RouteData} from 'astro';import type {IntegrationRouteData} from "astro"
function useRoute(route: RouteData) {function useRoute(route: IntegrationRouteData) {
}#11941 b6a5f39 Thanks @Princesseuh! - Merges the output: 'hybrid' and output: 'static' configurations into one single configuration (now called 'static') that works the same way as the previous hybrid option.
It is no longer necessary to specify output: 'hybrid' in your Astro config to use server-rendered pages. The new output: 'static' has this capability included. Astro will now automatically provide the ability to opt out of prerendering in your static site with no change to your output configuration required. Any page route or endpoint can include export const prerender = false to be server-rendered, while the rest of your site is statically-generated.
If your project used hybrid rendering, you must now remove the output: 'hybrid' option from your Astro config as it no longer exists. However, no other changes to your project are required, and you should have no breaking changes. The previous 'hybrid' behavior is now the default, under a new name 'static'.
If you were using the output: 'static' (default) option, you can continue to use it as before. By default, all of your pages will continue to be prerendered and you will have a completely static site. You should have no breaking changes to your project.
import { defineConfig } from "astro/config";
export default defineConfig({ output: 'hybrid',});An adapter is still required to deploy an Astro project with any server-rendered pages. Failure to include an adapter will result in a warning in development and an error at build time.
#11788 7c0ccfc Thanks @ematipico! - Updates the default value of security.checkOrigin to true, which enables Cross-Site Request Forgery (CSRF) protection by default for pages rendered on demand.
If you had previously configured security.checkOrigin: true, you no longer need this set in your Astro config. This is now the default and it is safe to remove.
To disable this behavior and opt out of automatically checking that the “origin” header matches the URL sent by each request, you must explicitly set security.checkOrigin: false:
export default defineConfig({ security: { checkOrigin: false }})#11825 560ef15 Thanks @bluwy! - Updates internal Shiki rehype plugin to highlight code blocks as hast (using Shiki’s codeToHast() API). This allows a more direct Markdown and MDX processing, and improves the performance when building the project, but may cause issues with existing Shiki transformers.
If you are using Shiki transformers passed to markdown.shikiConfig.transformers, you must make sure they do not use the postprocess hook as it no longer runs on code blocks in .md and .mdx files. (See the Shiki documentation on transformer hooks for more information).
Code blocks in .mdoc files and <Code /> component do not use the internal Shiki rehype plugin and are unaffected.
#11826 7315050 Thanks @matthewp! - Deprecate Astro.glob
The Astro.glob function has been deprecated in favor of Content Collections and import.meta.glob.
import.meta.glob(https://vitejs.dev/guide/features.html#glob-import).Also consider using glob packages from npm, like fast-glob, especially if statically generating your site, as it is faster for most use-cases.
The easiest path is to migrate to import.meta.glob like so:
const posts = Astro.glob('./posts/*.md');const posts = Object.values(import.meta.glob('./posts/*.md', { eager: true }));#12268 4e9a3ac Thanks @ematipico! - The command astro add vercel now updates the configuration file differently, and adds @astrojs/vercel as module to import.
This is a breaking change because it requires the version 8.* of @astrojs/vercel.
#11741 6617491 Thanks @bluwy! - Removes internal JSX handling and moves the responsibility to the @astrojs/mdx package directly. The following exports are also now removed:
astro/jsx/babel.jsastro/jsx/component.jsastro/jsx/index.jsastro/jsx/renderer.jsastro/jsx/server.jsastro/jsx/transform-options.jsIf your project includes .mdx files, you must upgrade @astrojs/mdx to the latest version so that it doesn’t rely on these entrypoints to handle your JSX.
#11782 9a2aaa0 Thanks @Princesseuh! - Makes the compiledContent property of Markdown content an async function, this change should fix underlying issues where sometimes when using a custom image service and images inside Markdown, Node would exit suddenly without any error message.
---import * as myPost from "../post.md";
const content = myPost.compiledContent(); const content = await myPost.compiledContent();---
<Fragment set:html={content} />#11819 2bdde80 Thanks @bluwy! - Updates the Astro config loading flow to ignore processing locally-linked dependencies with Vite (e.g. npm link, in a monorepo, etc). Instead, they will be normally imported by the Node.js runtime the same way as other dependencies from node_modules.
Previously, Astro would process locally-linked dependencies which were able to use Vite features like TypeScript when imported by the Astro config file.
However, this caused confusion as integration authors may test against a package that worked locally, but not when published. This method also restricts using CJS-only dependencies because Vite requires the code to be ESM. Therefore, Astro’s behaviour is now changed to ignore processing any type of dependencies by Vite.
In most cases, make sure your locally-linked dependencies are built to JS before running the Astro project, and the config loading should work as before.
#11827 a83e362 Thanks @matthewp! - Prevent usage of astro:content in the client
Usage of astro:content in the client has always been discouraged because it leads to all of your content winding up in your client bundle, and can possibly leaks secrets.
This formally makes doing so impossible, adding to the previous warning with errors.
In the future Astro might add APIs for client-usage based on needs.
#11979 423dfc1 Thanks @bluwy! - Bumps vite dependency to v6.0.0-beta.2. The version is pinned and will be updated as new Vite versions publish to prevent unhandled breaking changes. For the full list of Vite-specific changes, see its changelog.
#11859 3804711 Thanks @florian-lefebvre! - Changes the default tsconfig.json with better defaults, and makes src/env.d.ts optional
Astro’s default tsconfig.json in starter examples has been updated to include generated types and exclude your build output. This means that src/env.d.ts is only necessary if you have added custom type declarations or if you’re not using a tsconfig.json file.
Additionally, running astro sync no longer creates, nor updates, src/env.d.ts as it is not required for type-checking standard Astro projects.
To update your project to Astro’s recommended TypeScript settings, please add the following include and exclude properties to tsconfig.json:
{ "extends": "astro/tsconfigs/base", "include": [".astro/types.d.ts", "**/*"], "exclude": ["dist"]}#11715 d74617c Thanks @Princesseuh! - Refactor the exported types from the astro module. There should normally be no breaking changes, but if you relied on some previously deprecated types, these might now have been fully removed.
In most cases, updating your code to move away from previously deprecated APIs in previous versions of Astro should be enough to fix any issues.
#12551 abf9a89 Thanks @ematipico! - Refactors legacy content and data collections to use the Content Layer API glob() loader for better performance and to support backwards compatibility. Also introduces the legacy.collections flag for projects that are unable to update to the new behavior immediately.
:warning: BREAKING CHANGE FOR LEGACY CONTENT COLLECTIONS :warning:
By default, collections that use the old types (content or data) and do not define a loader are now implemented under the hood using the Content Layer API’s built-in glob() loader, with extra backward-compatibility handling.
In order to achieve backwards compatibility with existing content collections, the following have been implemented:
glob loader collection is defined, with patterns that match the previous handling (matches src/content/<collection name>/**/*.md and other content extensions depending on installed integrations, with underscore-prefixed files and folders ignored)slug field is added with the same format as beforerender() method is added to the entry, so they can be called using entry.render()getEntryBySlug is supportedIn order to achieve backwards compatibility with existing data collections, the following have been implemented:
glob loader collection is defined, with patterns that match the previous handling (matches src/content/<collection name>/**/*{.json,.yaml} and other data extensions, with underscore-prefixed files and folders ignored)getDataEntryById is supportedWhile this backwards compatibility implementation is able to emulate most of the features of legacy collections, there are some differences and limitations that may cause breaking changes to existing collections:
src/content/, even if they were not defined in src/content/config.ts. This behavior is now deprecated, and collections should always be defined in src/content/config.ts. For existing collections, these can just be empty declarations (e.g. const blog = defineCollection({})) and Astro will implicitly define your legacy collection for you in a way that is compatible with the new loading behavior.layout field is not supported in Markdown collection entries. This property is intended only for standalone page files located in src/pages/ and not likely to be in your collection entries. However, if you were using this property, you must now create dynamic routes that include your page styling.getCollection(), the order in which entries are returned may be different than before. If you need a specific order, you should sort the collection entries yourself.image().refine() is not supported. If you need to validate the properties of an image you will need to do this at runtime in your page or component.key argument of getEntry(collection, key) is typed as string, rather than having types for every entry.A new legacy configuration flag legacy.collections is added for users that want to keep their current legacy (content and data) collections behavior (available in Astro v2 - v4), or who are not yet ready to update their projects:
import { defineConfig } from 'astro/config';
export default defineConfig({ legacy: { collections: true, },});When set, no changes to your existing collections are necessary, and the restrictions on storing both new and old collections continue to exist: legacy collections (only) must continue to remain in src/content/, while new collections using a loader from the Content Layer API are forbidden in that folder.
#11660 e90f559 Thanks @bluwy! - Fixes attribute rendering for non-boolean HTML attributes with boolean values to match proper attribute handling in browsers.
Previously, non-boolean attributes may not have included their values when rendered to HTML. In Astro v5.0, the values are now explicitly rendered as ="true" or ="false"
In the following .astro examples, only allowfullscreen is a boolean attribute:
<!-- src/pages/index.astro --><!-- `allowfullscreen` is a boolean attribute --><p allowfullscreen={true}></p><p allowfullscreen={false}></p>
<!-- `inherit` is *not* a boolean attribute --><p inherit={true}></p><p inherit={false}></p>
<!-- `data-*` attributes are not boolean attributes --><p data-light={true}></p><p data-light={false}></p>Astro v5.0 now preserves the full data attribute with its value when rendering the HTML of non-boolean attributes:
<p allowfullscreen></p><p></p>
<p inherit="true"></p><p inherit></p><p inherit="false"></p>
<p data-light></p><p data-light="true"></p><p></p><p data-light="false"></p>If you rely on attribute values, for example to locate elements or to conditionally render, update your code to match the new non-boolean attribute values:
el.getAttribute('inherit') === ''el.getAttribute('inherit') === 'false'
el.hasAttribute('data-light')el.dataset.light === 'true'#11770 cfa6a47 Thanks @Princesseuh! - Removed support for the Squoosh image service. As the underlying library libsquoosh is no longer maintained, and the image service sees very little usage we have decided to remove it from Astro.
Our recommendation is to use the base Sharp image service, which is more powerful, faster, and more actively maintained.
import { squooshImageService } from "astro/config";import { defineConfig } from "astro/config";
export default defineConfig({ image: { service: squooshImageService() }});If you are using this service, and cannot migrate to the base Sharp image service, a third-party extraction of the previous service is available here: https://github.com/Princesseuh/astro-image-service-squoosh
#12231 90ae100 Thanks @bluwy! - Updates the automatic charset=utf-8 behavior for Markdown pages, where instead of responding with charset=utf-8 in the Content-Type header, Astro will now automatically add the <meta charset="utf-8"> tag instead.
This behaviour only applies to Markdown pages (.md or similar Markdown files located within src/pages/) that do not use Astro’s special layout frontmatter property. It matches the rendering behaviour of other non-content pages, and retains the minimal boilerplate needed to write with non-ASCII characters when adding individual Markdown pages to your site.
If your Markdown pages use the layout frontmatter property, then HTML encoding will be handled by the designated layout component instead, and the <meta charset="utf-8"> tag will not be added to your page by default.
If you require charset=utf-8 to render your page correctly, make sure that your layout components contain the <meta charset="utf-8"> tag. You may need to add this if you have not already done so.
#11714 8a53517 Thanks @matthewp! - Remove support for functionPerRoute
This change removes support for the functionPerRoute option both in Astro and @astrojs/vercel.
This option made it so that each route got built as separate entrypoints so that they could be loaded as separate functions. The hope was that by doing this it would decrease the size of each function. However in practice routes use most of the same code, and increases in function size limitations made the potential upsides less important.
Additionally there are downsides to functionPerRoute, such as hitting limits on the number of functions per project. The feature also never worked with some Astro features like i18n domains and request rewriting.
Given this, the feature has been removed from Astro.
#11864 ee38b3a Thanks @ematipico! - ### [changed]: RouteData.distURL is now an array
In Astro v4.x, RouteData.distURL was undefined or a URL
Astro v5.0, RouteData.distURL is undefined or an array of URL. This was a bug, because a route can generate multiple files on disk, especially when using dynamic routes such as [slug] or [...slug].
Update your code to handle RouteData.distURL as an array.
if (route.distURL) { if (route.distURL.endsWith('index.html')) { // do something } for (const url of route.distURL) { if (url.endsWith('index.html')) { // do something } }}#11253 4e5cc5a Thanks @kevinzunigacuellar! - Changes the data returned for page.url.current, page.url.next, page.url.prev, page.url.first and page.url.last to include the value set for base in your Astro config.
Previously, you had to manually prepend your configured value for base to the URL path. Now, Astro automatically includes your base value in next and prev URLs.
If you are using the paginate() function for “previous” and “next” URLs, remove any existing base value as it is now added for you:
---export async function getStaticPaths({ paginate }) { const astronautPages = [{ astronaut: 'Neil Armstrong', }, { astronaut: 'Buzz Aldrin', }, { astronaut: 'Sally Ride', }, { astronaut: 'John Glenn', }]; return paginate(astronautPages, { pageSize: 1 });}const { page } = Astro.props;// `base: /'docs'` configured in `astro.config.mjs` const prev = "/docs" + page.url.prev; const prev = page.url.prev;---<a id="prev" href={prev}>Back</a>#12079 7febf1f Thanks @ematipico! - params passed in getStaticPaths are no longer automatically decoded.
params aren’t decoded anymore.In Astro v4.x, params in were automatically decoded using decodeURIComponent.
Astro v5.0 doesn’t automatically decode params in getStaticPaths anymore, so you’ll need to manually decode them yourself if needed
If you were relying on the automatic decode, you’ll need to manually decode it using decodeURI.
Note that the use of decodeURIComponent) is discouraged for getStaticPaths because it decodes more characters than it should, for example /, ?, # and more.
---export function getStaticPaths() { return [ { params: { id: decodeURI("%5Bpage%5D") } }, { params: { id: "%5Bpage%5D" } }, ]}
const { id } = Astro.params;---#11941 b6a5f39 Thanks @Princesseuh! - Adapters can now specify the build output type they’re intended for using the adapterFeatures.buildOutput property. This property can be used to always generate a server output, even if the project doesn’t have any server-rendered pages.
{ 'astro:config:done': ({ setAdapter, config }) => { setAdapter({ name: 'my-adapter', adapterFeatures: { buildOutput: 'server', }, }); },}If your adapter specifies buildOutput: 'static', and the user’s project contains server-rendered pages, Astro will warn in development and error at build time. Note that a hybrid output, containing both static and server-rendered pages, is considered to be a server output, as a server is required to serve the server-rendered pages.
#12067 c48916c Thanks @stramel! - Adds experimental support for built-in SVG components.
This feature allows you to import SVG files directly into your Astro project as components. By default, Astro will inline the SVG content into your HTML output.
To enable this feature, set experimental.svg to true in your Astro config:
{ experimental: { svg: true, },}To use this feature, import an SVG file in your Astro project, passing any common SVG attributes to the imported component. Astro also provides a size attribute to set equal height and width properties:
---import Logo from './path/to/svg/file.svg';---
<Logo size={24} />For a complete overview, and to give feedback on this experimental API, see the Feature RFC.
#12226 51d13e2 Thanks @ematipico! - The following renderer fields and integration fields now accept URL as a type:
Renderers:
AstroRenderer.clientEntrpointAstroRenderer.serverEntrypointIntegrations:
InjectedRoute.entrypointAstroIntegrationMiddleware.entrypointDevToolbarAppEntry.entrypoint#12323 c280655 Thanks @bluwy! - Updates to Vite 6.0.0-beta.6
#12243 eb41d13 Thanks @florian-lefebvre! - Improves defineConfig type safety. TypeScript will now error if a group of related configuration options do not have consistent types. For example, you will now see an error if your language set for i18n.defaultLocale is not one of the supported locales specified in i18n.locales.
#12329 8309c61 Thanks @florian-lefebvre! - Adds a new astro:routes:resolved hook to the Integration API. Also update the astro:build:done hook by deprecating routes and adding a new assets map.
When building an integration, you can now get access to routes inside the astro:routes:resolved hook:
const integration = () => { return { name: 'my-integration', hooks: { 'astro:routes:resolved': ({ routes }) => { console.log(routes); }, }, };};This hook runs before astro:config:done, and whenever a route changes in development.
The routes array from astro:build:done is now deprecated, and exposed properties are now available on astro:routes:resolved, except for distURL. For this, you can use the newly exposed assets map:
const integration = () => { let routes return { name: 'my-integration', hooks: { 'astro:routes:resolved': (params) => { routes = params.routes }, 'astro:build:done': ({ routes assets }) => { for (const route of routes) { const distURL = assets.get(route.pattern) if (distURL) { Object.assign(route, { distURL }) } } console.log(routes) } } }}#11911 c3dce83 Thanks @ascorbic! - The Content Layer API introduced behind a flag in 4.14.0 is now stable and ready for use in Astro v5.0.
The new Content Layer API builds upon content collections, taking them beyond local files in src/content/ and allowing you to fetch content from anywhere, including remote APIs. These new collections work alongside your existing content collections, and you can migrate them to the new API at your own pace. There are significant improvements to performance with large collections of local files. For more details, see the Content Layer RFC.
If you previously used this feature, you can now remove the experimental.contentLayer flag from your Astro config:
import { defineConfig } from 'astro'
export default defineConfig({ experimental: { contentLayer: true }})The core of the new Content Layer API is the loader, a function that fetches content from a source and caches it in a local data store. Astro 4.14 ships with built-in glob() and file() loaders to handle your local Markdown, MDX, Markdoc, and JSON files:
import { defineCollection, z } from 'astro:content';import { glob } from 'astro/loaders';
const blog = defineCollection({ // The ID is a slug generated from the path of the file relative to `base` loader: glob({ pattern: '**/*.md', base: './src/data/blog' }), schema: z.object({ title: z.string(), description: z.string(), publishDate: z.coerce.date(), }),});
export const collections = { blog };You can then query using the existing content collections functions, and use a simplified render() function to display your content:
---import { getEntry, render } from 'astro:content';
const post = await getEntry('blog', Astro.params.slug);
const { Content } = await render(entry);---
<Content />You’re not restricted to the built-in loaders – we hope you’ll try building your own. You can fetch content from anywhere and return an array of entries:
const countries = defineCollection({ loader: async () => { const response = await fetch('https://restcountries.com/v3.1/all'); const data = await response.json(); // Must return an array of entries with an id property, // or an object with IDs as keys and entries as values return data.map((country) => ({ id: country.cca3, ...country, })); }, // optionally add a schema to validate the data and make it type-safe for users // schema: z.object...});
export const collections = { countries };For more advanced loading logic, you can define an object loader. This allows incremental updates and conditional loading, and gives full access to the data store. It also allows a loader to define its own schema, including generating it dynamically based on the source API. See the the Content Layer API RFC for more details.
Loaders are better when they’re shared. You can create a package that exports a loader and publish it to npm, and then anyone can use it on their site. We’re excited to see what the community comes up with! To get started, take a look at some examples. Here’s how to load content using an RSS/Atom feed loader:
import { defineCollection } from 'astro:content';import { feedLoader } from '@ascorbic/feed-loader';
const podcasts = defineCollection({ loader: feedLoader({ url: 'https://feeds.99percentinvisible.org/99percentinvisible', }),});
export const collections = { podcasts };To learn more, see the Content Layer RFC.
#11980 a604a0c Thanks @matthewp! - ViewTransitions component renamed to ClientRouter
The <ViewTransitions /> component has been renamed to <ClientRouter />. There are no other changes than the name. The old name will continue to work in Astro 5.x, but will be removed in 6.0.
This change was done to clarify the role of the component within Astro’s View Transitions support. Astro supports View Transitions APIs in a few different ways, and renaming the component makes it more clear that the features you get from the ClientRouter component are slightly different from what you get using the native CSS-based MPA router.
We still intend to maintain the ClientRouter as before, and it’s still important for use-cases that the native support doesn’t cover, such as persisting state between pages.
#11875 a8a3d2c Thanks @florian-lefebvre! - Adds a new property isPrerendered to the globals Astro and APIContext . This boolean value represents whether or not the current page is prerendered:
---export const prerender = true;---export const onRequest = (ctx, next) => { console.log(ctx.isPrerendered); // it will log true return next();};#12047 21b5e80 Thanks @rgodha24! - Adds a new optional parser property to the built-in file() loader for content collections to support additional file types such as toml and csv.
The file() loader now accepts a second argument that defines a parser function. This allows you to specify a custom parser (e.g. toml.parse or csv-parse) to create a collection from a file’s contents. The file() loader will automatically detect and parse JSON and YAML files (based on their file extension) with no need for a parser.
This works with any type of custom file formats including csv and toml. The following example defines a content collection dogs using a .toml file.
[[dogs]]id = "..."age = "..."
[[dogs]]id = "..."age = "..."After importing TOML’s parser, you can load the dogs collection into your project by passing both a file path and parser to the file() loader.
import { defineCollection } from "astro:content"import { file } from "astro/loaders"import { parse as parseToml } from "toml"
const dogs = defineCollection({ loader: file("src/data/dogs.toml", { parser: (text) => parseToml(text).dogs }), schema: /* ... */})
// it also works with CSVs!import { parse as parseCsv } from "csv-parse/sync";
const cats = defineCollection({ loader: file("src/data/cats.csv", { parser: (text) => parseCsv(text, { columns: true, skipEmptyLines: true })})});The parser argument also allows you to load a single collection from a nested JSON document. For example, this JSON file contains multiple collections:
{ "dogs": [{}], "cats": [{}] }You can seperate these collections by passing a custom parser to the file() loader like so:
const dogs = defineCollection({ loader: file('src/data/pets.json', { parser: (text) => JSON.parse(text).dogs }),});const cats = defineCollection({ loader: file('src/data/pets.json', { parser: (text) => JSON.parse(text).cats }),});And it continues to work with maps of id to data
bubbles: breed: 'Goldfish' age: 2finn: breed: 'Betta' age: 1const fish = defineCollection({ loader: file('src/data/fish.yaml'), schema: z.object({ breed: z.string(), age: z.number() }),});#11698 05139ef Thanks @ematipico! - Adds a new property to the globals Astro and APIContext called routePattern. The routePattern represents the current route (component)
that is being rendered by Astro. It’s usually a path pattern will look like this: blog/[slug]:
---const route = Astro.routePattern;console.log(route); // it will log "blog/[slug]"---export const GET = (ctx) => { console.log(ctx.routePattern); // it will log src/pages/index.js return new Response.json({ loreum: 'ipsum' });};#11941 b6a5f39 Thanks @Princesseuh! - Adds a new buildOutput property to the astro:config:done hook returning the build output type.
This can be used to know if the user’s project will be built as a static site (HTML files), or a server-rendered site (whose exact output depends on the adapter).
#12377 af867f3 Thanks @ascorbic! - Adds experimental support for automatic responsive images
This feature is experimental and may change in future versions. To enable it, set experimental.responsiveImages to true in your astro.config.mjs file.
{ experimental: { responsiveImages: true, },}When this flag is enabled, you can pass a layout prop to any <Image /> or <Picture /> component to create a responsive image. When a layout is set, images have automatically generated srcset and sizes attributes based on the image’s dimensions and the layout type. Images with responsive and full-width layouts will have styles applied to ensure they resize according to their container.
---import { Image, Picture } from 'astro:assets';import myImage from '../assets/my_image.png';---
<Image src={myImage} alt="A description of my image." layout="responsive" width={800} height={600}/><Picture src={myImage} alt="A description of my image." layout="full-width" formats={['avif', 'webp', 'jpeg']}/>This <Image /> component will generate the following HTML output:
<img src="/_astro/my_image.hash3.webp" srcset=" /_astro/my_image.hash1.webp 640w, /_astro/my_image.hash2.webp 750w, /_astro/my_image.hash3.webp 800w, /_astro/my_image.hash4.webp 828w, /_astro/my_image.hash5.webp 1080w, /_astro/my_image.hash6.webp 1280w, /_astro/my_image.hash7.webp 1600w " alt="A description of my image" sizes="(min-width: 800px) 800px, 100vw" loading="lazy" decoding="async" fetchpriority="auto" width="800" height="600" style="--w: 800; --h: 600; --fit: cover; --pos: center;" data-astro-image="responsive"/>These are additional properties available to the <Image /> and <Picture /> components when responsive images are enabled:
layout: The layout type for the image. Can be responsive, fixed, full-width or none. Defaults to value of image.experimentalLayout.fit: Defines how the image should be cropped if the aspect ratio is changed. Values match those of CSS object-fit. Defaults to cover, or the value of image.experimentalObjectFit if set.position: Defines the position of the image crop if the aspect ratio is changed. Values match those of CSS object-position. Defaults to center, or the value of image.experimentalObjectPosition if set.priority: If set, eagerly loads the image. Otherwise images will be lazy-loaded. Use this for your largest above-the-fold image. Defaults to false.You can enable responsive images for all <Image /> and <Picture /> components by setting image.experimentalLayout with a default value. This can be overridden by the layout prop on each component.
Example:
{ image: { // Used for all `<Image />` and `<Picture />` components unless overridden experimentalLayout: 'responsive', }, experimental: { responsiveImages: true, },}---import { Image } from 'astro:assets';import myImage from '../assets/my_image.png';---
<Image src={myImage} alt="This will use responsive layout" width={800} height={600} />
<Image src={myImage} alt="This will use full-width layout" layout="full-width" />
<Image src={myImage} alt="This will disable responsive images" layout="none" />For a complete overview, and to give feedback on this experimental API, see the Responsive Images RFC.
#12150 93351bc Thanks @bluwy! - Adds support for passing values other than "production" or "development" to the --mode flag (e.g. "staging", "testing", or any custom value) to change the value of import.meta.env.MODE or the loaded .env file. This allows you take advantage of Vite’s mode feature.
Also adds a new --devOutput flag for astro build that will output a development-based build.
Note that changing the mode does not change the kind of code transform handled by Vite and Astro:
astro dev, Astro will transform code with debug information.astro build, Astro will transform code with the most optimized output and removes debug information.astro build --devOutput (new flag), Astro will transform code with debug information like in astro dev.This enables various usecases like:
# Run the dev server connected to a "staging" APIastro dev --mode staging
# Build a site that connects to a "staging" APIastro build --mode staging
# Build a site that connects to a "production" API with additional debug informationastro build --devOutput
# Build a site that connects to a "testing" APIastro build --mode testingThe different modes can be used to load different .env files, e.g. .env.staging or .env.production, which can be customized for each environment, for example with different API_URL environment variable values.
#12510 14feaf3 Thanks @bholmesdev! - Changes the generated URL query param from _astroAction to _action when submitting a form using Actions. This avoids leaking the framework name into the URL bar, which may be considered a security issue.
#11806 f7f2338 Thanks @Princesseuh! - The value of the different properties on supportedAstroFeatures for adapters can now be objects, with a support and message properties. The content of the message property will be shown in the Astro CLI when the adapter is not compatible with the feature, allowing one to give a better informational message to the user.
This is notably useful with the new limited value, to explain to the user why support is limited.
#12071 61d248e Thanks @Princesseuh! - astro add no longer automatically sets output: 'server'. Since the default value of output now allows for server-rendered pages, it no longer makes sense to default to full server builds when you add an adapter
#11955 d813262 Thanks @matthewp! - Server Islands introduced behind an experimental flag in v4.12.0 is no longer experimental and is available for general use.
Server islands are Astro’s solution for highly cacheable pages of mixed static and dynamic content. They allow you to specify components that should run on the server, allowing the rest of the page to be more aggressively cached, or even generated statically.
Turn any .astro component into a server island by adding the server:defer directive and optionally, fallback placeholder content. It will be rendered dynamically at runtime outside the context of the rest of the page, allowing you to add longer cache headers for the pages, or even prerender them.
---import Avatar from '../components/Avatar.astro';import GenericUser from '../components/GenericUser.astro';---
<header> <h1>Page Title</h1> <div class="header-right"> <Avatar server:defer> <GenericUser slot="fallback" /> </Avatar> </div></header>If you were previously using this feature, please remove the experimental flag from your Astro config:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental { serverIslands: true, },});If you have been waiting for stabilization before using server islands, you can now do so.
Please see the server island documentation for more about this feature.
#12373 d10f918 Thanks @bholmesdev! - Changes the default behavior for Astro Action form requests to a standard POST submission.
In Astro 4.x, actions called from an HTML form would trigger a redirect with the result forwarded using cookies. This caused issues for large form errors and return values that exceeded the 4 KB limit of cookie-based storage.
Astro 5.0 now renders the result of an action as a POST result without any forwarding. This will introduce a “confirm form resubmission?” dialog when a user attempts to refresh the page, though it no longer imposes a 4 KB limit on action return value.
If you prefer to address the “confirm form resubmission?” dialog on refresh, or to preserve action results across sessions, you can now customize action result handling from middleware.
We recommend using a session storage provider as described in our Netlify Blob example. However, if you prefer the cookie forwarding behavior from 4.X and accept the 4 KB size limit, you can implement the pattern as shown in this sample snippet:
import { defineMiddleware } from 'astro:middleware';import { getActionContext } from 'astro:actions';
export const onRequest = defineMiddleware(async (context, next) => { // Skip requests for prerendered pages if (context.isPrerendered) return next();
const { action, setActionResult, serializeActionResult } = getActionContext(context);
// If an action result was forwarded as a cookie, set the result // to be accessible from `Astro.getActionResult()` const payload = context.cookies.get('ACTION_PAYLOAD'); if (payload) { const { actionName, actionResult } = payload.json(); setActionResult(actionName, actionResult); context.cookies.delete('ACTION_PAYLOAD'); return next(); }
// If an action was called from an HTML form action, // call the action handler and redirect with the result as a cookie. if (action?.calledFrom === 'form') { const actionResult = await action.handler();
context.cookies.set('ACTION_PAYLOAD', { actionName: action.name, actionResult: serializeActionResult(actionResult), });
if (actionResult.error) { // Redirect back to the previous page on error const referer = context.request.headers.get('Referer'); if (!referer) { throw new Error('Internal: Referer unexpectedly missing from Action POST request.'); } return context.redirect(referer); } // Redirect to the destination page on success return context.redirect(context.originPathname); }
return next();});#12475 3f02d5f Thanks @ascorbic! - Changes the default content config location from src/content/config.* to src/content.config.*.
The previous location is still supported, and is required if the legacy.collections flag is enabled.
#11963 0a1036e Thanks @florian-lefebvre! - Adds a new createCodegenDir() function to the astro:config:setup hook in the Integrations API
In 4.14, we introduced the injectTypes utility on the astro:config:done hook. It can create .d.ts files and make their types available to user’s projects automatically. Under the hood, it creates a file in <root>/.astro/integrations/<normalized_integration_name>.
While the .astro directory has always been the preferred place to write code generated files, it has also been prone to mistakes. For example, you can write a .astro/types.d.ts file, breaking Astro types. Or you can create a file that overrides a file created by another integration.
In this release, <root>/.astro/integrations/<normalized_integration_name> can now be retrieved in the astro:config:setup hook by calling createCodegenDir(). It allows you to have a dedicated folder, avoiding conflicts with another integration or Astro itself. This directory is created by calling this function so it’s safe to write files to it directly:
import { writeFileSync } from 'node:fs';
const integration = { name: 'my-integration', hooks: { 'astro:config:setup': ({ createCodegenDir }) => { const codegenDir = createCodegenDir(); writeFileSync(new URL('cache.json', codegenDir), '{}', 'utf-8'); }, },};#12379 94f4fe8 Thanks @Princesseuh! - Adds a new components exported from astro/components: Welcome, to be used by the new Basics template
#11806 f7f2338 Thanks @Princesseuh! - Adds a new limited value for the different properties of supportedAstroFeatures for adapters, which indicates that the adapter is compatible with the feature, but with some limitations. This is useful for adapters that support a feature, but not in all cases or with all options.
#11925 74722cb Thanks @florian-lefebvre! - Updates astro/config import to reference astro/client types
When importing astro/config, types from astro/client will be made automatically available to your project. If your project tsconfig.json changes how references behave, you’ll still have access to these types after running astro sync.
#12081 8679954 Thanks @florian-lefebvre! - Removes the experimental contentCollectionsCache introduced in 3.5.0.
Astro Content Layer API independently solves some of the caching and performance issues with legacy content collections that this strategy attempted to address. This feature has been replaced with continued work on improvements to the content layer. If you were using this experimental feature, you must now remove the flag from your Astro config as it no longer exists:
export default defineConfig({ experimental: { contentCollectionsCache: true }})The cacheManifest boolean argument is no longer passed to the astro:build:done integration hook:
const integration = { name: "my-integration", hooks: { "astro:build:done": ({ cacheManifest, logger }) => {} }}#12565 97f413f Thanks @ascorbic! - Fixes a bug where content types were not generated when first running astro dev unless src/content exists
#11987 bf90a53 Thanks @florian-lefebvre! - render() signature now takes renderOptions as 2nd argument
The signature for app.render() has changed, and the second argument is now an options object called renderOptions with more options for customizing rendering.
The renderOptions are:
addCookieHeader: Determines whether Astro will set the Set-Cookie header, otherwise the adapter is expected to do so itself.clientAddress: The client IP address used to set Astro.clientAddress.locals: An object of locals that’s set to Astro.locals.routeData: An object specifying the route to use.#12522 33b0e30 Thanks @ascorbic! - Fixes a bug where content config was ignored if it was outside of content dir and has a parent dir with an underscore
#12424 4364bff Thanks @ematipico! - Fixes an issue where an incorrect usage of Astro actions was lost when porting the fix from v4 to v5
#12438 c8f877c Thanks @ascorbic! - Fixes a bug where legacy content types were generated for content layer collections if they were in the content directory
#12035 325a57c Thanks @ascorbic! - Correctly parse values returned from inline loader
#11960 4410130 Thanks @ascorbic! - Fixes an issue where the refresh context data was not passed correctly to content layer loaders
#11878 334948c Thanks @ascorbic! - Adds a new function refreshContent to the astro:server:setup hook that allows integrations to refresh the content layer. This can be used, for example, to register a webhook endpoint during dev, or to open a socket to a CMS to listen for changes.
By default, refreshContent will refresh all collections. You can optionally pass a loaders property, which is an array of loader names. If provided, only collections that use those loaders will be refreshed. For example, A CMS integration could use this property to only refresh its own collections.
You can also pass a context object to the loaders. This can be used to pass arbitrary data, such as the webhook body, or an event from the websocket.
{ name: 'my-integration', hooks: { 'astro:server:setup': async ({ server, refreshContent }) => { server.middlewares.use('/_refresh', async (req, res) => { if(req.method !== 'POST') { res.statusCode = 405 res.end('Method Not Allowed'); return } let body = ''; req.on('data', chunk => { body += chunk.toString(); }); req.on('end', async () => { try { const webhookBody = JSON.parse(body); await refreshContent({ context: { webhookBody }, loaders: ['my-loader'] }); res.writeHead(200, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ message: 'Content refreshed successfully' })); } catch (error) { res.writeHead(500, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ error: 'Failed to refresh content: ' + error.message })); } }); }); } }}#11991 d7a396c Thanks @matthewp! - Update error link to on-demand rendering guide
#12127 55e9cd8 Thanks @ascorbic! - Prevents Vite emitting an error when restarting itself
#12516 cb9322c Thanks @stramel! - Handle multiple root nodes on SVG files
#11974 60211de Thanks @ascorbic! - Exports the RenderResult type
#12578 07b9ca8 Thanks @WesSouza! - Explicitly import index.ts to fix types when moduleResolution is NodeNext
#11791 9393243 Thanks @bluwy! - Updates Astro’s default <script> rendering strategy and removes the experimental.directRenderScript option as this is now the default behavior: scripts are always rendered directly. This new strategy prevents scripts from being executed in pages where they are not used.
Scripts will directly render as declared in Astro files (including existing features like TypeScript, importing node_modules, and deduplicating scripts). You can also now conditionally render scripts in your Astro file.
However, this means scripts are no longer hoisted to the <head>, multiple scripts on a page are no longer bundled together, and the <script> tag may interfere with the CSS styling.
As this is a potentially breaking change to your script behavior, please review your <script> tags and ensure that they behave as expected.
#12011 cfdaab2 Thanks @ArmandPhilippot! - Fixes a type and an example in documenting the security.checkOrigin property of Astro config.
#12168 1cd3085 Thanks @ascorbic! - Allows “slug” as a field in content layer data
#12302 7196c24 Thanks @ematipico! - Fixes an issue where the origin check middleware run for prendered pages
#12341 c1786d6 Thanks @ematipico! - Fixes and issue where Astro.currentLocale always returned the default locale when consumed inside a server island.
#11732 4cd6c43 Thanks @matthewp! - Use GET requests with preloading for Server Islands
Server Island requests include the props used to render the island as well as any slots passed in (excluding the fallback slot). Since browsers have a max 4mb URL length we default to using a POST request to avoid overflowing this length.
However in reality most usage of Server Islands are fairly isolated and won’t exceed this limit, so a GET request is possible by passing this same information via search parameters.
Using GET means we can also include a <link rel="preload"> tag to speed up the request.
This change implements this, with safe fallback to POST.
#11952 50a0146 Thanks @ascorbic! - Adds support for array patterns in the built-in glob() content collections loader
The glob loader can now accept an array of multiple patterns as well as string patterns. This allows you to more easily combine multiple patterns into a single collection, and also means you can use negative matches to exclude files from the collection.
const probes = defineCollection({ // Load all markdown files in the space-probes directory, except for those that start with "voyager-" loader: glob({ pattern: ['*.md', '!voyager-*'], base: 'src/data/space-probes' }), schema: z.object({ name: z.string(), type: z.enum(['Space Probe', 'Mars Rover', 'Comet Lander']), launch_date: z.date(), status: z.enum(['Active', 'Inactive', 'Decommissioned']), destination: z.string(), operator: z.string(), notable_discoveries: z.array(z.string()), }),});#12022 ddc3a08 Thanks @Princesseuh! - Properly handle including trailing slash on the image endpoint route based on the trailingSlash config
#12169 15fa9ba Thanks @ematipico! - Fixes a bug where configured redirects were incorrectly constructed when reading the file system.
This caused an issue where configuring a redirect in astro.config.mjs like { /old: /new }, failed to trigger the correct redirect in the dev server.
#11914 b5d827b Thanks @ascorbic! - Exports types for all LoaderContext properties from astro/loaders to make it easier to use them in custom loaders.
The ScopedDataStore interface (which was previously internal) is renamed to DataStore, to reflect the fact that it’s the only public API for the data store.
#12270 25192a0 Thanks @ematipico! - Fixes a bug where the params weren’t correctly computed when rendering URLs with non-English characters
#11927 5b4e3ab Thanks @florian-lefebvre! - Updates the env configuration reference docs to include a full API reference for envField.
#12591 b731b3d Thanks @ascorbic! - Fixes a bug where a catchall route would match an image endpoint request
#12073 acf264d Thanks @bluwy! - Replaces ora with yocto-spinner
#12339 bdb75a8 Thanks @ematipico! - Adds an error when Astro.rewrite() is used to rewrite an on-demand route with a static route when using the "server" output.
This is a forbidden rewrite because Astro can’t retrieve the emitted static route at runtime. This route is served by the hosting platform, and not Astro itself.
#12511 d023682 Thanks @stramel! - Fix SVG Component sprite references
#12486 dc3d842 Thanks @matthewp! - Call server island early so it can set headers
#12016 837ee3a Thanks @matthewp! - Fixes actions with large amount of validation errors
#11943 fa4671c Thanks @sarah11918! - Updates error messages that assume content collections are located in src/content/ with more generic language
#12030 10a756a Thanks @ascorbic! - Resolves image paths in content layer with initial slash as project-relative
When using the image() schema helper, previously paths with an initial slash were treated as public URLs. This was to match the behavior of markdown images. However this is a change from before, where paths with an initial slash were treated as project-relative. This change restores the previous behavior, so that paths with an initial slash are treated as project-relative.
#12009 f10a3b7 Thanks @matthewp! - Fixes use of Vitest with Astro 5
#12075 a19530e Thanks @bluwy! - Parses frontmatter ourselves
#12552 15f000c Thanks @avanderbergh! - Fixed an issue where modifying the Request.headers prototype during prerendering caused a build error. Removed conflicting value and writable properties from the headers descriptor to prevent Invalid property descriptor errors.
#12070 9693ad4 Thanks @ematipico! - Fixes an issue where the check origin middleware was incorrectly injected when the build output was "static"
#12169 15fa9ba Thanks @ematipico! - Fixes a bug where the dev server was not providing a consistent user experience for configured redirects.
With the fix, when you configure a redirect in astro.config.mjs like this { /old: "/new" }, the dev server return an HTML response that matches the one emitted by a static build.
Updated dependencies [3ab3b4e, 5608338, 827093e, 560ef15, 83a2a64, 3ab3b4e, a19530e, 1dc8f5e]:
14feaf3 Thanks @bholmesdev! - Changes the generated URL query param from _astroAction to _action when submitting a form using Actions. This avoids leaking the framework name into the URL bar, which may be considered a security issue.#12522 33b0e30 Thanks @ascorbic! - Fixes a bug where content config was ignored if it was outside of content dir and has a parent dir with an underscore
#12516 cb9322c Thanks @stramel! - Handle multiple root nodes on SVG files
#12511 d023682 Thanks @stramel! - Fix SVG Component sprite references
#12498 b140a3f Thanks @ematipico! - Fixes a regression where Astro was trying to access Request.headers
b140a3f Thanks @ematipico! - Fixes a regression where Astro was trying to access Request.headers#12480 c3b7e7c Thanks @matthewp! - Removes the default throw behavior in astro:env
#12444 28dd3ce Thanks @ematipico! - Fixes an issue where a server island hydration script might fail case the island ID misses from the DOM.
#12476 80a9a52 Thanks @florian-lefebvre! - Fixes a case where the Content Layer glob() loader would not update when renaming or deleting an entry
#12418 25baa4e Thanks @oliverlynch! - Fix cached image redownloading if it is the first asset
#12477 46f6b38 Thanks @ematipico! - Fixes an issue where the SSR build was emitting the dist/server/entry.mjs file with an incorrect import at the top of the file/
#12365 a23985b Thanks @apatel369! - Fixes an issue where Astro.currentLocale was not correctly returning the locale for 404 and 500 pages.
#12067 c48916c Thanks @stramel! - Adds experimental support for built-in SVG components.
This feature allows you to import SVG files directly into your Astro project as components. By default, Astro will inline the SVG content into your HTML output.
To enable this feature, set experimental.svg to true in your Astro config:
{ experimental: { svg: true, },}To use this feature, import an SVG file in your Astro project, passing any common SVG attributes to the imported component. Astro also provides a size attribute to set equal height and width properties:
---import Logo from './path/to/svg/file.svg';---
<Logo size={24} />For a complete overview, and to give feedback on this experimental API, see the Feature RFC.
#12329 8309c61 Thanks @florian-lefebvre! - Adds a new astro:routes:resolved hook to the Integration API. Also update the astro:build:done hook by deprecating routes and adding a new assets map.
When building an integration, you can now get access to routes inside the astro:routes:resolved hook:
const integration = () => { return { name: 'my-integration', hooks: { 'astro:routes:resolved': ({ routes }) => { console.log(routes); }, }, };};This hook runs before astro:config:done, and whenever a route changes in development.
The routes array from astro:build:done is now deprecated, and exposed properties are now available on astro:routes:resolved, except for distURL. For this, you can use the newly exposed assets map:
const integration = () => { let routes return { name: 'my-integration', hooks: { 'astro:routes:resolved': (params) => { routes = params.routes }, 'astro:build:done': ({ routes assets }) => { for (const route of routes) { const distURL = assets.get(route.pattern) if (distURL) { Object.assign(route, { distURL }) } } console.log(routes) } } }}#12377 af867f3 Thanks @ascorbic! - Adds experimental support for automatic responsive images
This feature is experimental and may change in future versions. To enable it, set experimental.responsiveImages to true in your astro.config.mjs file.
{ experimental: { responsiveImages: true, },}When this flag is enabled, you can pass a layout prop to any <Image /> or <Picture /> component to create a responsive image. When a layout is set, images have automatically generated srcset and sizes attributes based on the image’s dimensions and the layout type. Images with responsive and full-width layouts will have styles applied to ensure they resize according to their container.
---import { Image, Picture } from 'astro:assets';import myImage from '../assets/my_image.png';---
<Image src={myImage} alt="A description of my image." layout="responsive" width={800} height={600}/><Picture src={myImage} alt="A description of my image." layout="full-width" formats={['avif', 'webp', 'jpeg']}/>This <Image /> component will generate the following HTML output:
<img src="/_astro/my_image.hash3.webp" srcset=" /_astro/my_image.hash1.webp 640w, /_astro/my_image.hash2.webp 750w, /_astro/my_image.hash3.webp 800w, /_astro/my_image.hash4.webp 828w, /_astro/my_image.hash5.webp 1080w, /_astro/my_image.hash6.webp 1280w, /_astro/my_image.hash7.webp 1600w " alt="A description of my image" sizes="(min-width: 800px) 800px, 100vw" loading="lazy" decoding="async" fetchpriority="auto" width="800" height="600" style="--w: 800; --h: 600; --fit: cover; --pos: center;" data-astro-image="responsive"/>These are additional properties available to the <Image /> and <Picture /> components when responsive images are enabled:
layout: The layout type for the image. Can be responsive, fixed, full-width or none. Defaults to value of image.experimentalLayout.fit: Defines how the image should be cropped if the aspect ratio is changed. Values match those of CSS object-fit. Defaults to cover, or the value of image.experimentalObjectFit if set.position: Defines the position of the image crop if the aspect ratio is changed. Values match those of CSS object-position. Defaults to center, or the value of image.experimentalObjectPosition if set.priority: If set, eagerly loads the image. Otherwise images will be lazy-loaded. Use this for your largest above-the-fold image. Defaults to false.You can enable responsive images for all <Image /> and <Picture /> components by setting image.experimentalLayout with a default value. This can be overridden by the layout prop on each component.
Example:
{ image: { // Used for all `<Image />` and `<Picture />` components unless overridden experimentalLayout: 'responsive', }, experimental: { responsiveImages: true, },}---import { Image } from 'astro:assets';import myImage from '../assets/my_image.png';---
<Image src={myImage} alt="This will use responsive layout" width={800} height={600} />
<Image src={myImage} alt="This will use full-width layout" layout="full-width" />
<Image src={myImage} alt="This will disable responsive images" layout="none" />For a complete overview, and to give feedback on this experimental API, see the Responsive Images RFC.
#12475 3f02d5f Thanks @ascorbic! - Changes the default content config location from src/content/config.* to src/content.config.*.
The previous location is still supported, and is required if the legacy.collections flag is enabled.
#12436 453ec6b Thanks @martrapp! - Fixes a potential null access in the clientside router
#12392 0462219 Thanks @apatel369! - Fixes an issue where scripts were not correctly injected during the build. The issue was triggered when there were injected routes with the same entrypoint and different pattern
#12373 d10f918 Thanks @bholmesdev! - Changes the default behavior for Astro Action form requests to a standard POST submission.
In Astro 4.x, actions called from an HTML form would trigger a redirect with the result forwarded using cookies. This caused issues for large form errors and return values that exceeded the 4 KB limit of cookie-based storage.
Astro 5.0 now renders the result of an action as a POST result without any forwarding. This will introduce a “confirm form resubmission?” dialog when a user attempts to refresh the page, though it no longer imposes a 4 KB limit on action return value.
If you prefer to address the “confirm form resubmission?” dialog on refresh, or to preserve action results across sessions, you can now customize action result handling from middleware.
We recommend using a session storage provider as described in our Netlify Blob example. However, if you prefer the cookie forwarding behavior from 4.X and accept the 4 KB size limit, you can implement the pattern as shown in this sample snippet:
import { defineMiddleware } from 'astro:middleware';import { getActionContext } from 'astro:actions';
export const onRequest = defineMiddleware(async (context, next) => { // Skip requests for prerendered pages if (context.isPrerendered) return next();
const { action, setActionResult, serializeActionResult } = getActionContext(context);
// If an action result was forwarded as a cookie, set the result // to be accessible from `Astro.getActionResult()` const payload = context.cookies.get('ACTION_PAYLOAD'); if (payload) { const { actionName, actionResult } = payload.json(); setActionResult(actionName, actionResult); context.cookies.delete('ACTION_PAYLOAD'); return next(); }
// If an action was called from an HTML form action, // call the action handler and redirect with the result as a cookie. if (action?.calledFrom === 'form') { const actionResult = await action.handler();
context.cookies.set('ACTION_PAYLOAD', { actionName: action.name, actionResult: serializeActionResult(actionResult), });
if (actionResult.error) { // Redirect back to the previous page on error const referer = context.request.headers.get('Referer'); if (!referer) { throw new Error('Internal: Referer unexpectedly missing from Action POST request.'); } return context.redirect(referer); } // Redirect to the destination page on success return context.redirect(context.originPathname); }
return next();});#12339 bdb75a8 Thanks @ematipico! - Adds an error when Astro.rewrite() is used to rewrite an on-demand route with a static route when using the "server" output.
This is a forbidden rewrite because Astro can’t retrieve the emitted static route at runtime. This route is served by the hosting platform, and not Astro itself.
acac0af Thanks @ematipico! - Fixes an issue where the dev server returns a 404 status code when a user middleware returns a valid Response.#12305 f5f7109 Thanks @florian-lefebvre! - Fixes a case where the error overlay would not escape the message
#12402 823e73b Thanks @ematipico! - Fixes a case where Astro allowed to call an action without using Astro.callAction. This is now invalid, and Astro will show a proper error.
---import { actions } from "astro:actions";
const result = actions.getUser({ userId: 123 });const result = Astro.callAction(actions.getUser, { userId: 123 });---#12401 9cca108 Thanks @bholmesdev! - Fixes unexpected 200 status in dev server logs for action errors and redirects.
#12311 bf2723e Thanks @dinesh-58! - Adds checked to the list of boolean attributes.
#12363 222f718 Thanks @Fryuni! - Fixes code generated by astro add command when adding a version of an integration other than the default latest.
#12368 493fe43 Thanks @bluwy! - Improves error logs when executing commands
#12355 c4726d7 Thanks @apatel369! - Improves error reporting for invalid frontmatter in MDX files during the astro build command. The error message now includes the file path where the frontmatter parsing failed.
#12333 836cd91 Thanks @imattacus! - Destroy the server response stream if async error is thrown
#12358 7680349 Thanks @spacedawwwg! - Honors inlineAstroConfig parameter in getViteConfig when creating a logger
#12353 35795a1 Thanks @hippotastic! - Fixes an issue in dev server watch file handling that could cause multiple restarts for a single file change.
#12351 5751488 Thanks @florian-lefebvre! - Reverts a change made in 4.16.6 that prevented usage of astro:env secrets inside middleware in SSR
#12346 20e5a84 Thanks @bluwy! - Fixes sourcemap generation when prefetch is enabled
#12349 1fc83d3 Thanks @norskeld! - Fixes the getImage options type so it properly extends ImageTransform
#12268 4e9a3ac Thanks @ematipico! - The command astro add vercel now updates the configuration file differently, and adds @astrojs/vercel as module to import.
This is a breaking change because it requires the version 8.* of @astrojs/vercel.
#12231 90ae100 Thanks @bluwy! - Updates the automatic charset=utf-8 behavior for Markdown pages, where instead of responding with charset=utf-8 in the Content-Type header, Astro will now automatically add the <meta charset="utf-8"> tag instead.
This behaviour only applies to Markdown pages (.md or similar Markdown files located within src/pages/) that do not use Astro’s special layout frontmatter property. It matches the rendering behaviour of other non-content pages, and retains the minimal boilerplate needed to write with non-ASCII characters when adding individual Markdown pages to your site.
If your Markdown pages use the layout frontmatter property, then HTML encoding will be handled by the designated layout component instead, and the <meta charset="utf-8"> tag will not be added to your page by default.
If you require charset=utf-8 to render your page correctly, make sure that your layout components contain the <meta charset="utf-8"> tag. You may need to add this if you have not already done so.
#12243 eb41d13 Thanks @florian-lefebvre! - Improves defineConfig type safety. TypeScript will now error if a group of related configuration options do not have consistent types. For example, you will now see an error if your language set for i18n.defaultLocale is not one of the supported locales specified in i18n.locales.
#12150 93351bc Thanks @bluwy! - Adds support for passing values other than "production" or "development" to the --mode flag (e.g. "staging", "testing", or any custom value) to change the value of import.meta.env.MODE or the loaded .env file. This allows you take advantage of Vite’s mode feature.
Also adds a new --devOutput flag for astro build that will output a development-based build.
Note that changing the mode does not change the kind of code transform handled by Vite and Astro:
astro dev, Astro will transform code with debug information.astro build, Astro will transform code with the most optimized output and removes debug information.astro build --devOutput (new flag), Astro will transform code with debug information like in astro dev.This enables various usecases like:
# Run the dev server connected to a "staging" APIastro dev --mode staging
# Build a site that connects to a "staging" APIastro build --mode staging
# Build a site that connects to a "production" API with additional debug informationastro build --devOutput
# Build a site that connects to a "testing" APIastro build --mode testingThe different modes can be used to load different .env files, e.g. .env.staging or .env.production, which can be customized for each environment, for example with different API_URL environment variable values.
#12302 7196c24 Thanks @ematipico! - Fixes an issue where the origin check middleware run for prendered pages
#12341 c1786d6 Thanks @ematipico! - Fixes and issue where Astro.currentLocale always returned the default locale when consumed inside a server island.
#12270 25192a0 Thanks @ematipico! - Fixes a bug where the params weren’t correctly computed when rendering URLs with non-English characters
#12338 9ca89b3 Thanks @situ2001! - Resets NODE_ENV to ensure install command run in dev mode
#12286 9d6bcdb Thanks @florian-lefebvre! - Fixes a case where a warning for experimental astro:env support would be shown when using an adapter but not actually using astro:env
#12342 ffc836b Thanks @liruifengv! - Fixes a typo in the command name of the CLI
#12301 0cfc69d Thanks @apatel369! - Fixes an issue with action handler context by passing the correct context (ActionAPIContext).
#12312 5642ef9 Thanks @koyopro! - Fixes an issue where using getViteConfig() returns incorrect and duplicate configuration
#12245 1d4f6a4 Thanks @bmenant! - Add components property to MDXInstance type definition (RenderResult and module import)
#12340 94eaeea Thanks @ematipico! - Fixes an issue where Astro actions didn’t work when base was different from /
#12263 e9e8080 Thanks @Fryuni! - Fixes conflict between server islands and on-demand dynamic routes in the form of /[...rest] or /[paramA]/[paramB].
#12279 b781f88 Thanks @jsparkdev! - Update wrong error message
#12273 c2ee963 Thanks @ascorbic! - Fixes an issue with some package managers where sites would not build if TypeScript was not installed.
#12235 a75bc5e Thanks @ematipico! - Fixes a bug where Astro Actions couldn’t redirect to the correct pathname when there was a rewrite involved.
#11839 ff522b9 Thanks @icaliman! - Fixes error when returning a top-level null from an Astro file frontmatter
#12272 388d237 Thanks @ascorbic! - Correctly handles local images when using a base path in SSR
#11823 a3d30a6 Thanks @DerTimonius! - fix: improve error message when inferSize is used in local images with the Image component
#12227 8b1a641 Thanks @florian-lefebvre! - Fixes a case where environment variables would not be refreshed when using astro:env
#12239 2b6daa5 Thanks @ematipico! - BREAKING CHANGE to the experimental Container API only
Changes the default page rendering behavior of Astro components in containers, and adds a new option partial: false to render full Astro pages as before.
Previously, the Container API was rendering all Astro components as if they were full Astro pages containing <!DOCTYPE html> by default. This was not intended, and now by default, all components will render as page partials: only the contents of the components without a page shell.
To render the component as a full-fledged Astro page, pass a new option called partial: false to renderToString() and renderToResponse():
import { experimental_AstroContainer as AstroContainer } from 'astro/container';import Card from '../src/components/Card.astro';
const container = AstroContainer.create();
await container.renderToString(Card); // the string will not contain `<!DOCTYPE html>`await container.renderToString(Card, { partial: false }); // the string will contain `<!DOCTYPE html>`#12226 51d13e2 Thanks @ematipico! - The following renderer fields and integration fields now accept URL as a type:
Renderers:
AstroRenderer.clientEntrpointAstroRenderer.serverEntrypointIntegrations:
InjectedRoute.entrypointAstroIntegrationMiddleware.entrypointDevToolbarAppEntry.entrypoint#12168 1cd3085 Thanks @ascorbic! - Allows “slug” as a field in content layer data
#12169 15fa9ba Thanks @ematipico! - Fixes a bug where configured redirects were incorrectly constructed when reading the file system.
This caused an issue where configuring a redirect in astro.config.mjs like { /old: /new }, failed to trigger the correct redirect in the dev server.
#12169 15fa9ba Thanks @ematipico! - Fixes a bug where the dev server was not providing a consistent user experience for configured redirects.
With the fix, when you configure a redirect in astro.config.mjs like this { /old: "/new" }, the dev server return an HTML response that matches the one emitted by a static build.
#12223 79ffa5d Thanks @ArmandPhilippot! - Fixes a false positive reported by the dev toolbar Audit app where a label was considered missing when associated with a button
The button element can be used with a label (e.g. to create a switch) and should not be reported as an accessibility issue when used as a child of a label.
#12199 c351352 Thanks @ematipico! - Fixes a regression in the computation of Astro.currentLocale
#12222 fb55695 Thanks @ematipico! - Fixes an issue where the edge middleware couldn’t correctly compute the client IP address when calling ctx.clientAddress()
12b0022 Thanks @bluwy! - Reverts https://github.com/withastro/astro/pull/12173 which caused Can't modify immutable headers warnings and 500 errors on Cloudflare Pages#12177 a4ffbfa Thanks @matthewp! - Ensure we target scripts for execution in the router
Using document.scripts is unsafe because if the application has a name="scripts" this will shadow the built-in document.scripts. Fix is to use getElementsByTagName to ensure we’re only grabbing real scripts.
#12173 2d10de5 Thanks @ematipico! - Fixes a bug where Astro Actions couldn’t redirect to the correct pathname when there was a rewrite involved.
#12039 710a1a1 Thanks @ematipico! - Adds a markdown.shikiConfig.langAlias option that allows aliasing a non-supported code language to a known language. This is useful when the language of your code samples is not a built-in Shiki language, but you want your Markdown source to contain an accurate language while also displaying syntax highlighting.
The following example configures Shiki to highlight cjs code blocks using the javascript syntax highlighter:
import { defineConfig } from 'astro/config';
export default defineConfig({ markdown: { shikiConfig: { langAlias: { cjs: 'javascript', }, }, },});Then in your Markdown, you can use the alias as the language for a code block for syntax highlighting:
```cjs'use strict';
function commonJs() { return 'I am a commonjs file';}```#11984 3ac2263 Thanks @chaegumi! - Adds a new build.concurreny configuration option to specify the number of pages to build in parallel
In most cases, you should not change the default value of 1.
Use this option only when other attempts to reduce the overall rendering time (e.g. batch or cache long running tasks like fetch calls or data access) are not possible or are insufficient.
Use this option only if the refactors are not possible. If the number is set too high, the page rendering may slow down due to insufficient memory resources and because JS is single-threaded.
[!WARNING] This feature is stable and is not considered experimental. However, this feature is only intended to address difficult performance issues, and breaking changes may occur in a minor release to keep this option as performant as possible.
import { defineConfig } from 'astro';
export default defineConfig({ build: { concurrency: 2, },});#12160 c6fd1df Thanks @louisescher! - Fixes a bug where astro.config.mts and astro.config.cts weren’t reloading the dev server upon modifications.
#12130 e96bcae Thanks @thehansys! - Fixes a bug in the parsing of x-forwarded-\* Request headers, where multiple values assigned to those headers were not correctly parsed.
Now, headers like x-forwarded-proto: https,http are correctly parsed.
#12147 9db755a Thanks @ascorbic! - Skips setting statusMessage header for HTTP/2 response
HTTP/2 doesn’t support status message, so setting this was logging a warning.
#12151 bb6d37f Thanks @ematipico! - Fixes an issue where Astro.currentLocale wasn’t incorrectly computed when the defaultLocale belonged to a custom locale path.
Updated dependencies [710a1a1]:
#11979 423dfc1 Thanks @bluwy! - Bumps vite dependency to v6.0.0-beta.2. The version is pinned and will be updated as new Vite versions publish to prevent unhandled breaking changes. For the full list of Vite-specific changes, see its changelog.
#12100 abf9a89 Thanks @astrobot-houston! - Refactors legacy content and data collections to use the Content Layer API glob() loader for better performance and to support backwards compatibility. Also introduces the legacy.collections flag for projects that are unable to update to the new behavior immediately.
:warning: BREAKING CHANGE FOR LEGACY CONTENT COLLECTIONS :warning:
By default, collections that use the old types (content or data) and do not define a loader are now implemented under the hood using the Content Layer API’s built-in glob() loader, with extra backward-compatibility handling.
In order to achieve backwards compatibility with existing content collections, the following have been implemented:
glob loader collection is defined, with patterns that match the previous handling (matches src/content/<collection name>/**/*.md and other content extensions depending on installed integrations, with underscore-prefixed files and folders ignored)slug field is added with the same format as beforerender() method is added to the entry, so they can be called using entry.render()getEntryBySlug is supportedIn order to achieve backwards compatibility with existing data collections, the following have been implemented:
glob loader collection is defined, with patterns that match the previous handling (matches src/content/<collection name>/**/*{.json,.yaml} and other data extensions, with underscore-prefixed files and folders ignored)getDataEntryById is supportedWhile this backwards compatibility implementation is able to emulate most of the features of legacy collections, there are some differences and limitations that may cause breaking changes to existing collections:
src/content/, even if they were not defined in src/content/config.ts. This behavior is now deprecated, and collections should always be defined in src/content/config.ts. For existing collections, these can just be empty declarations (e.g. const blog = defineCollection({})) and Astro will implicitly define your legacy collection for you in a way that is compatible with the new loading behavior.layout field is not supported in Markdown collection entries. This property is intended only for standalone page files located in src/pages/ and not likely to be in your collection entries. However, if you were using this property, you must now create dynamic routes that include your page styling.getCollection(), the order in which entries are returned may be different than before. If you need a specific order, you should sort the collection entries yourself.image().refine() is not supported. If you need to validate the properties of an image you will need to do this at runtime in your page or component.key argument of getEntry(collection, key) is typed as string, rather than having types for every entry.A new legacy configuration flag legacy.collections is added for users that want to keep their current legacy (content and data) collections behavior (available in Astro v2 - v4), or who are not yet ready to update their projects:
import { defineConfig } from 'astro/config';
export default defineConfig({ legacy: { collections: true, },});When set, no changes to your existing collections are necessary, and the restrictions on storing both new and old collections continue to exist: legacy collections (only) must continue to remain in src/content/, while new collections using a loader from the Content Layer API are forbidden in that folder.
#12079 7febf1f Thanks @ematipico! - params passed in getStaticPaths are no longer automatically decoded.
params aren’t decoded anymore.In Astro v4.x, params in were automatically decoded using decodeURIComponent.
Astro v5.0 doesn’t automatically decode params in getStaticPaths anymore, so you’ll need to manually decode them yourself if needed
If you were relying on the automatic decode, you’ll need to manually decode it using decodeURI.
Note that the use of decodeURIComponent) is discouraged for getStaticPaths because it decodes more characters than it should, for example /, ?, # and more.
---export function getStaticPaths() { return [ { params: { id: decodeURI("%5Bpage%5D") } }, { params: { id: "%5Bpage%5D" } }, ]}
const { id } = Astro.params;---#12121 2490ceb Thanks @ascorbic! - Support passing the values Infinity and -Infinity as island props.
#12118 f47b347 Thanks @Namchee! - Removes the strip-ansi dependency in favor of the native Node API
#12126 6e1dfeb Thanks @ascorbic! - Clear content layer cache when astro version changes
#12117 a46839a Thanks @ArmandPhilippot! - Updates Vite links to use their new domain
#12124 499fbc9 Thanks @ascorbic! - Allows special characters in Action names
#12123 b8673df Thanks @Princesseuh! - Fixes missing body property on CollectionEntry types for content layer entries
#12132 de35daa Thanks @jcayzac! - Updates the cookie dependency to avoid the CVE 2024-47764 vulnerability.
#12113 a54e520 Thanks @ascorbic! - Adds a helpful error when attempting to render an undefined collection entry
#12097 11d447f Thanks @ascorbic! - Fixes error where references in content layer schemas sometimes incorrectly report as missing
#12108 918953b Thanks @lameuler! - Fixes a bug where data URL images were not correctly handled. The bug resulted in an ENAMETOOLONG error.
#12105 42037f3 Thanks @ascorbic! - Returns custom statusText that has been set in a Response
#12109 ea22558 Thanks @ematipico! - Fixes a regression that was introduced by an internal refactor of how the middleware is loaded by the Astro application. The regression was introduced by #11550.
When the edge middleware feature is opted in, Astro removes the middleware function from the SSR manifest, and this wasn’t taken into account during the refactor.
#12106 d3a74da Thanks @ascorbic! - Handles case where an immutable Response object is returned from an endpoint
#12090 d49a537 Thanks @markjaquith! - Server islands: changes the server island HTML placeholder comment so that it is much less likely to get removed by HTML minifiers.
#12047 21b5e80 Thanks @rgodha24! - Adds a new optional parser property to the built-in file() loader for content collections to support additional file types such as toml and csv.
The file() loader now accepts a second argument that defines a parser function. This allows you to specify a custom parser (e.g. toml.parse or csv-parse) to create a collection from a file’s contents. The file() loader will automatically detect and parse JSON and YAML files (based on their file extension) with no need for a parser.
This works with any type of custom file formats including csv and toml. The following example defines a content collection dogs using a .toml file.
[[dogs]]id = "..."age = "..."
[[dogs]]id = "..."age = "..."After importing TOML’s parser, you can load the dogs collection into your project by passing both a file path and parser to the file() loader.
import { defineCollection } from "astro:content"import { file } from "astro/loaders"import { parse as parseToml } from "toml"
const dogs = defineCollection({ loader: file("src/data/dogs.toml", { parser: (text) => parseToml(text).dogs }), schema: /* ... */})
// it also works with CSVs!import { parse as parseCsv } from "csv-parse/sync";
const cats = defineCollection({ loader: file("src/data/cats.csv", { parser: (text) => parseCsv(text, { columns: true, skipEmptyLines: true })})});The parser argument also allows you to load a single collection from a nested JSON document. For example, this JSON file contains multiple collections:
{ "dogs": [{}], "cats": [{}] }You can seperate these collections by passing a custom parser to the file() loader like so:
const dogs = defineCollection({ loader: file('src/data/pets.json', { parser: (text) => JSON.parse(text).dogs }),});const cats = defineCollection({ loader: file('src/data/pets.json', { parser: (text) => JSON.parse(text).cats }),});And it continues to work with maps of id to data
bubbles: breed: 'Goldfish' age: 2finn: breed: 'Betta' age: 1const fish = defineCollection({ loader: file('src/data/fish.yaml'), schema: z.object({ breed: z.string(), age: z.number() }),});#12071 61d248e Thanks @Princesseuh! - astro add no longer automatically sets output: 'server'. Since the default value of output now allows for server-rendered pages, it no longer makes sense to default to full server builds when you add an adapter
#11963 0a1036e Thanks @florian-lefebvre! - Adds a new createCodegenDir() function to the astro:config:setup hook in the Integrations API
In 4.14, we introduced the injectTypes utility on the astro:config:done hook. It can create .d.ts files and make their types available to user’s projects automatically. Under the hood, it creates a file in <root>/.astro/integrations/<normalized_integration_name>.
While the .astro directory has always been the preferred place to write code generated files, it has also been prone to mistakes. For example, you can write a .astro/types.d.ts file, breaking Astro types. Or you can create a file that overrides a file created by another integration.
In this release, <root>/.astro/integrations/<normalized_integration_name> can now be retrieved in the astro:config:setup hook by calling createCodegenDir(). It allows you to have a dedicated folder, avoiding conflicts with another integration or Astro itself. This directory is created by calling this function so it’s safe to write files to it directly:
import { writeFileSync } from 'node:fs';
const integration = { name: 'my-integration', hooks: { 'astro:config:setup': ({ createCodegenDir }) => { const codegenDir = createCodegenDir(); writeFileSync(new URL('cache.json', codegenDir), '{}', 'utf-8'); }, },};#12081 8679954 Thanks @florian-lefebvre! - Removes the experimental contentCollectionsCache introduced in 3.5.0.
Astro Content Layer API independently solves some of the caching and performance issues with legacy content collections that this strategy attempted to address. This feature has been replaced with continued work on improvements to the content layer. If you were using this experimental feature, you must now remove the flag from your Astro config as it no longer exists:
export default defineConfig({ experimental: { contentCollectionsCache: true }})The cacheManifest boolean argument is no longer passed to the astro:build:done integration hook:
const integration = { name: "my-integration", hooks: { "astro:build:done": ({ cacheManifest, logger }) => {} }}#12073 acf264d Thanks @bluwy! - Replaces ora with yocto-spinner
#12075 a19530e Thanks @bluwy! - Parses frontmatter ourselves
#12070 9693ad4 Thanks @ematipico! - Fixes an issue where the check origin middleware was incorrectly injected when the build output was "static"
Updated dependencies [a19530e]:
#12084 12dae50 Thanks @Princesseuh! - Adds missing filePath property on content layer entries
#12046 d7779df Thanks @martrapp! - View transitions: Fixes Astro’s fade animation to prevent flashing during morph transitions.
#12043 1720c5b Thanks @bluwy! - Fixes injected endpoint prerender option detection
#12095 76c5fbd Thanks @TheOtterlord! - Fix installing non-stable versions of integrations with astro add
#12035 325a57c Thanks @ascorbic! - Correctly parse values returned from inline loader
#12022 ddc3a08 Thanks @Princesseuh! - Properly handle including trailing slash on the image endpoint route based on the trailingSlash config
#12016 837ee3a Thanks @matthewp! - Fixes actions with large amount of validation errors
#12030 10a756a Thanks @ascorbic! - Resolves image paths in content layer with initial slash as project-relative
When using the image() schema helper, previously paths with an initial slash were treated as public URLs. This was to match the behavior of markdown images. However this is a change from before, where paths with an initial slash were treated as project-relative. This change restores the previous behavior, so that paths with an initial slash are treated as project-relative.
#12034 5b3ddfa Thanks @ematipico! - Fixes an issue where the middleware wasn’t called when a project uses 404.astro.
#12042 243ecb6 Thanks @ematipico! - Fixes a problem in the Container API, where a polyfill wasn’t correctly applied. This caused an issue in some environments where crypto isn’t supported.
#12038 26ea5e8 Thanks @ascorbic! - Resolves image paths in content layer with initial slash as project-relative
When using the image() schema helper, previously paths with an initial slash were treated as public URLs. This was to match the behavior of markdown images. However this is a change from before, where paths with an initial slash were treated as project-relative. This change restores the previous behavior, so that paths with an initial slash are treated as project-relative.
#12014 53cb41e Thanks @ascorbic! - Fixes an issue where component styles were not correctly included in rendered MDX
#12031 8c0cae6 Thanks @ematipico! - Fixes a bug where the rewrite via next(/*..*/) inside a middleware didn’t compute the new APIContext.params
#12026 40e7a1b Thanks @bluwy! - Initializes the Markdown processor only when there’s .md files
#12028 d3bd673 Thanks @bluwy! - Handles route collision detection only if it matches getStaticPaths
#12027 dd3b753 Thanks @fviolette! - Add selected to the list of boolean attributes
#12001 9be3e1b Thanks @uwej711! - Remove dependency on path-to-regexp
#12008 5608338 Thanks @Princesseuh! - Welcome to the Astro 5 beta! This release has no changes from the latest alpha of this package, but it does bring us one step closer to the final, stable release.
Starting from this release, no breaking changes will be introduced unless absolutely necessary.
To learn how to upgrade, check out the Astro v5.0 upgrade guide in our beta docs site.
5608338]:
#11982 d84e444 Thanks @Princesseuh! - Adds a default exclude and include value to the tsconfig presets. {projectDir}/dist is now excluded by default, and {projectDir}/.astro/types.d.ts and {projectDir}/**/* are included by default.
Both of these options can be overridden by setting your own values to the corresponding settings in your tsconfig.json file.
#11987 bf90a53 Thanks @florian-lefebvre! - The locals object can no longer be overridden
Middleware, API endpoints, and pages can no longer override the locals object in its entirety. You can still append values onto the object, but you can not replace the entire object and delete its existing values.
If you were previously overwriting like so:
ctx.locals = { one: 1, two: 2,};This can be changed to an assignment on the existing object instead:
Object.assign(ctx.locals, { one: 1, two: 2,});#11980 a604a0c Thanks @matthewp! - ViewTransitions component renamed to ClientRouter
The <ViewTransitions /> component has been renamed to <ClientRouter />. There are no other changes than the name. The old name will continue to work in Astro 5.x, but will be removed in 6.0.
This change was done to clarify the role of the component within Astro’s View Transitions support. Astro supports View Transitions APIs in a few different ways, and renaming the component makes it more clear that the features you get from the ClientRouter component are slightly different from what you get using the native CSS-based MPA router.
We still intend to maintain the ClientRouter as before, and it’s still important for use-cases that the native support doesn’t cover, such as persisting state between pages.
#11987 bf90a53 Thanks @florian-lefebvre! - render() signature now takes renderOptions as 2nd argument
The signature for app.render() has changed, and the second argument is now an options object called renderOptions with more options for customizing rendering.
The renderOptions are:
addCookieHeader: Determines whether Astro will set the Set-Cookie header, otherwise the adapter is expected to do so itself.clientAddress: The client IP address used to set Astro.clientAddress.locals: An object of locals that’s set to Astro.locals.routeData: An object specifying the route to use.#11991 d7a396c Thanks @matthewp! - Update error link to on-demand rendering guide
#11864 ee38b3a Thanks @ematipico! - ### [changed]: entryPoint type inside the hook astro:build:ssr
In Astro v4.x, the entryPoint type was RouteData.
Astro v5.0 the entryPoint type is IntegrationRouteData, which contains a subset of the RouteData type. The fields isIndex and fallbackRoutes were removed.
Update your adapter to change the type of entryPoint from RouteData to IntegrationRouteData.
import type {RouteData} from 'astro';import type {IntegrationRouteData} from "astro"
function useRoute(route: RouteData) {function useRoute(route: IntegrationRouteData) {
}#11908 518433e Thanks @Princesseuh! - The image.endpoint config now allow customizing the route of the image endpoint in addition to the entrypoint. This can be useful in niche situations where the default route /_image conflicts with an existing route or your local server setup.
import { defineConfig } from 'astro/config';
defineConfig({ image: { endpoint: { route: '/image', entrypoint: './src/image_endpoint.ts', }, },});#11806 f7f2338 Thanks @Princesseuh! - Removes the assets property on supportedAstroFeatures for adapters, as it did not reflect reality properly in many cases.
Now, relating to assets, only a single sharpImageService property is available, determining if the adapter is compatible with the built-in sharp image service.
#11864 ee38b3a Thanks @ematipico! - ### [changed]: routes type inside the hook astro:build:done
In Astro v4.x, the routes type was RouteData.
Astro v5.0 the routes type is IntegrationRouteData, which contains a subset of the RouteData type. The fields isIndex and fallbackRoutes were removed.
Update your adapter to change the type of routes from RouteData to IntegrationRouteData.
import type {RouteData} from 'astro';import type {IntegrationRouteData} from "astro"
function useRoute(route: RouteData) {function useRoute(route: IntegrationRouteData) {
}#11864 ee38b3a Thanks @ematipico! - ### [changed]: RouteData.distURL is now an array
In Astro v4.x, RouteData.distURL was undefined or a URL
Astro v5.0, RouteData.distURL is undefined or an array of URL. This was a bug, because a route can generate multiple files on disk, especially when using dynamic routes such as [slug] or [...slug].
Update your code to handle RouteData.distURL as an array.
if (route.distURL) { if (route.distURL.endsWith('index.html')) { // do something } for (const url of route.distURL) { if (url.endsWith('index.html')) { // do something } }}#11806 f7f2338 Thanks @Princesseuh! - The value of the different properties on supportedAstroFeatures for adapters can now be objects, with a support and message properties. The content of the message property will be shown in the Astro CLI when the adapter is not compatible with the feature, allowing one to give a better informational message to the user.
This is notably useful with the new limited value, to explain to the user why support is limited.
#11955 d813262 Thanks @matthewp! - Server Islands introduced behind an experimental flag in v4.12.0 is no longer experimental and is available for general use.
Server islands are Astro’s solution for highly cacheable pages of mixed static and dynamic content. They allow you to specify components that should run on the server, allowing the rest of the page to be more aggressively cached, or even generated statically.
Turn any .astro component into a server island by adding the server:defer directive and optionally, fallback placeholder content. It will be rendered dynamically at runtime outside the context of the rest of the page, allowing you to add longer cache headers for the pages, or even prerender them.
---import Avatar from '../components/Avatar.astro';import GenericUser from '../components/GenericUser.astro';---
<header> <h1>Page Title</h1> <div class="header-right"> <Avatar server:defer> <GenericUser slot="fallback" /> </Avatar> </div></header>If you were previously using this feature, please remove the experimental flag from your Astro config:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental { serverIslands: true, },});If you have been waiting for stabilization before using server islands, you can now do so.
Please see the server island documentation for more about this feature.
#11806 f7f2338 Thanks @Princesseuh! - Adds a new limited value for the different properties of supportedAstroFeatures for adapters, which indicates that the adapter is compatible with the feature, but with some limitations. This is useful for adapters that support a feature, but not in all cases or with all options.
#11925 74722cb Thanks @florian-lefebvre! - Updates astro/config import to reference astro/client types
When importing astro/config, types from astro/client will be made automatically available to your project. If your project tsconfig.json changes how references behave, you’ll still have access to these types after running astro sync.
#11974 60211de Thanks @ascorbic! - Exports the RenderResult type
#11939 7b09c62 Thanks @bholmesdev! - Adds support for Zod discriminated unions on Action form inputs. This allows forms with different inputs to be submitted to the same action, using a given input to decide which object should be used for validation.
This example accepts either a create or update form submission, and uses the type field to determine which object to validate against.
import { defineAction } from 'astro:actions';import { z } from 'astro:schema';
export const server = { changeUser: defineAction({ accept: 'form', input: z.discriminatedUnion('type', [ z.object({ type: z.literal('create'), name: z.string(), email: z.string().email(), }), z.object({ type: z.literal('update'), id: z.number(), name: z.string(), email: z.string().email(), }), ]), async handler(input) { if (input.type === 'create') { // input is { type: 'create', name: string, email: string } } else { // input is { type: 'update', id: number, name: string, email: string } } }, }),};The corresponding create and update forms may look like this:
---import { actions } from 'astro:actions';---
<!--Create--><form action={actions.changeUser} method="POST"> <input type="hidden" name="type" value="create" /> <input type="text" name="name" required /> <input type="email" name="email" required /> <button type="submit">Create User</button></form>
<!--Update--><form action={actions.changeUser} method="POST"> <input type="hidden" name="type" value="update" /> <input type="hidden" name="id" value="user-123" /> <input type="text" name="name" required /> <input type="email" name="email" required /> <button type="submit">Update User</button></form>#11939 7b09c62 Thanks @bholmesdev! - Adds support for Zod discriminated unions on Action form inputs. This allows forms with different inputs to be submitted to the same action, using a given input to decide which object should be used for validation.
This example accepts either a create or update form submission, and uses the type field to determine which object to validate against.
import { defineAction } from 'astro:actions';import { z } from 'astro:schema';
export const server = { changeUser: defineAction({ accept: 'form', input: z.discriminatedUnion('type', [ z.object({ type: z.literal('create'), name: z.string(), email: z.string().email(), }), z.object({ type: z.literal('update'), id: z.number(), name: z.string(), email: z.string().email(), }), ]), async handler(input) { if (input.type === 'create') { // input is { type: 'create', name: string, email: string } } else { // input is { type: 'update', id: number, name: string, email: string } } }, }),};The corresponding create and update forms may look like this:
---import { actions } from 'astro:actions';---
<!--Create--><form action={actions.changeUser} method="POST"> <input type="hidden" name="type" value="create" /> <input type="text" name="name" required /> <input type="email" name="email" required /> <button type="submit">Create User</button></form>
<!--Update--><form action={actions.changeUser} method="POST"> <input type="hidden" name="type" value="update" /> <input type="hidden" name="id" value="user-123" /> <input type="text" name="name" required /> <input type="email" name="email" required /> <button type="submit">Update User</button></form>#11968 86ad1fd Thanks @NikolaRHristov! - Fixes a typo in the server island JSDoc
#11983 633eeaa Thanks @uwej711! - Remove dependency on path-to-regexp
#11941 b6a5f39 Thanks @Princesseuh! - Merges the output: 'hybrid' and output: 'static' configurations into one single configuration (now called 'static') that works the same way as the previous hybrid option.
It is no longer necessary to specify output: 'hybrid' in your Astro config to use server-rendered pages. The new output: 'static' has this capability included. Astro will now automatically provide the ability to opt out of prerendering in your static site with no change to your output configuration required. Any page route or endpoint can include export const prerender = false to be server-rendered, while the rest of your site is statically-generated.
If your project used hybrid rendering, you must now remove the output: 'hybrid' option from your Astro config as it no longer exists. However, no other changes to your project are required, and you should have no breaking changes. The previous 'hybrid' behavior is now the default, under a new name 'static'.
If you were using the output: 'static' (default) option, you can continue to use it as before. By default, all of your pages will continue to be prerendered and you will have a completely static site. You should have no breaking changes to your project.
import { defineConfig } from "astro/config";
export default defineConfig({ output: 'hybrid',});An adapter is still required to deploy an Astro project with any server-rendered pages. Failure to include an adapter will result in a warning in development and an error at build time.
#11941 b6a5f39 Thanks @Princesseuh! - Adapters can now specify the build output type they’re intended for using the adapterFeatures.buildOutput property. This property can be used to always generate a server output, even if the project doesn’t have any server-rendered pages.
{ 'astro:config:done': ({ setAdapter, config }) => { setAdapter({ name: 'my-adapter', adapterFeatures: { buildOutput: 'server', }, }); },}If your adapter specifies buildOutput: 'static', and the user’s project contains server-rendered pages, Astro will warn in development and error at build time. Note that a hybrid output, containing both static and server-rendered pages, is considered to be a server output, as a server is required to serve the server-rendered pages.
#11941 b6a5f39 Thanks @Princesseuh! - Adds a new buildOutput property to the astro:config:done hook returning the build output type.
This can be used to know if the user’s project will be built as a static site (HTML files), or a server-rendered site (whose exact output depends on the adapter).
#11960 4410130 Thanks @ascorbic! - Fixes an issue where the refresh context data was not passed correctly to content layer loaders
#11952 50a0146 Thanks @ascorbic! - Adds support for array patterns in the built-in glob() content collections loader
The glob loader can now accept an array of multiple patterns as well as string patterns. This allows you to more easily combine multiple patterns into a single collection, and also means you can use negative matches to exclude files from the collection.
const probes = defineCollection({ // Load all markdown files in the space-probes directory, except for those that start with "voyager-" loader: glob({ pattern: ['*.md', '!voyager-*'], base: 'src/data/space-probes' }), schema: z.object({ name: z.string(), type: z.enum(['Space Probe', 'Mars Rover', 'Comet Lander']), launch_date: z.date(), status: z.enum(['Active', 'Inactive', 'Decommissioned']), destination: z.string(), operator: z.string(), notable_discoveries: z.array(z.string()), }),});#11916 46ea29f Thanks @bluwy! - Updates how the build.client and build.server option values get resolved to match existing documentation. With this fix, the option values will now correctly resolve relative to the outDir option. So if outDir is set to ./dist/nested/, then by default:
build.client will resolve to <root>/dist/nested/client/build.server will resolve to <root>/dist/nested/server/Previously the values were incorrectly resolved:
build.client was resolved to <root>/dist/nested/dist/client/build.server was resolved to <root>/dist/nested/dist/server/If you were relying on the previous build paths, make sure that your project code is updated to the new build paths.
#11875 a8a3d2c Thanks @florian-lefebvre! - Adds a new property isPrerendered to the globals Astro and APIContext . This boolean value represents whether or not the current page is prerendered:
---export const prerender = true;---export const onRequest = (ctx, next) => { console.log(ctx.isPrerendered); // it will log true return next();};#11927 5b4e3ab Thanks @florian-lefebvre! - Updates the env configuration reference docs to include a full API reference for envField.
#11943 fa4671c Thanks @sarah11918! - Updates error messages that assume content collections are located in src/content/ with more generic language
#11879 bd1d4aa Thanks @matthewp! - Allow passing a cryptography key via ASTRO_KEY
For Server islands Astro creates a cryptography key in order to hash props for the islands, preventing accidental leakage of secrets.
If you deploy to an environment with rolling updates then there could be multiple instances of your app with different keys, causing potential key mismatches.
To fix this you can now pass the ASTRO_KEY environment variable to your build in order to reuse the same key.
To generate a key use:
astro create-keyThis will print out an environment variable to set like:
ASTRO_KEY=PIAuyPNn2aKU/bviapEuc/nVzdzZPizKNo3OqF/5PmQ=#11935 c58193a Thanks @Princesseuh! - Fixes astro add not using the proper export point when adding certain adapters
#11902 d63bc50 Thanks @ascorbic! - Fixes case where content layer did not update during clean dev builds on Linux and Windows
#11886 7ff7134 Thanks @matthewp! - Fixes a missing error message when actions throws during astro sync
#11904 ca54e3f Thanks @wtchnm! - perf(assets): avoid downloading original image when using cache
#11859 3804711 Thanks @florian-lefebvre! - Changes the default tsconfig.json with better defaults, and makes src/env.d.ts optional
Astro’s default tsconfig.json in starter examples has been updated to include generated types and exclude your build output. This means that src/env.d.ts is only necessary if you have added custom type declarations or if you’re not using a tsconfig.json file.
Additionally, running astro sync no longer creates, nor updates, src/env.d.ts as it is not required for type-checking standard Astro projects.
To update your project to Astro’s recommended TypeScript settings, please add the following include and exclude properties to tsconfig.json:
{ "extends": "astro/tsconfigs/base", "include": ["**/*", ".astro/types.d.ts"], "exclude": ["dist"]}#11911 c3dce83 Thanks @ascorbic! - The Content Layer API introduced behind a flag in 4.14.0 is now stable and ready for use in Astro v5.0.
The new Content Layer API builds upon content collections, taking them beyond local files in src/content/ and allowing you to fetch content from anywhere, including remote APIs. These new collections work alongside your existing content collections, and you can migrate them to the new API at your own pace. There are significant improvements to performance with large collections of local files. For more details, see the Content Layer RFC.
If you previously used this feature, you can now remove the experimental.contentLayer flag from your Astro config:
import { defineConfig } from 'astro'
export default defineConfig({ experimental: { contentLayer: true }})The core of the new Content Layer API is the loader, a function that fetches content from a source and caches it in a local data store. Astro 4.14 ships with built-in glob() and file() loaders to handle your local Markdown, MDX, Markdoc, and JSON files:
import { defineCollection, z } from 'astro:content';import { glob } from 'astro/loaders';
const blog = defineCollection({ // The ID is a slug generated from the path of the file relative to `base` loader: glob({ pattern: '**/*.md', base: './src/data/blog' }), schema: z.object({ title: z.string(), description: z.string(), publishDate: z.coerce.date(), }),});
export const collections = { blog };You can then query using the existing content collections functions, and use a simplified render() function to display your content:
---import { getEntry, render } from 'astro:content';
const post = await getEntry('blog', Astro.params.slug);
const { Content } = await render(entry);---
<Content />You’re not restricted to the built-in loaders – we hope you’ll try building your own. You can fetch content from anywhere and return an array of entries:
const countries = defineCollection({ loader: async () => { const response = await fetch('https://restcountries.com/v3.1/all'); const data = await response.json(); // Must return an array of entries with an id property, // or an object with IDs as keys and entries as values return data.map((country) => ({ id: country.cca3, ...country, })); }, // optionally add a schema to validate the data and make it type-safe for users // schema: z.object...});
export const collections = { countries };For more advanced loading logic, you can define an object loader. This allows incremental updates and conditional loading, and gives full access to the data store. It also allows a loader to define its own schema, including generating it dynamically based on the source API. See the the Content Layer API RFC for more details.
Loaders are better when they’re shared. You can create a package that exports a loader and publish it to npm, and then anyone can use it on their site. We’re excited to see what the community comes up with! To get started, take a look at some examples. Here’s how to load content using an RSS/Atom feed loader:
import { defineCollection } from 'astro:content';import { feedLoader } from '@ascorbic/feed-loader';
const podcasts = defineCollection({ loader: feedLoader({ url: 'https://feeds.99percentinvisible.org/99percentinvisible', }),});
export const collections = { podcasts };To learn more, see the Content Layer RFC.
#11902 d63bc50 Thanks @ascorbic! - Fixes case where content layer did not update during clean dev builds on Linux and Windows
#11914 b5d827b Thanks @ascorbic! - Exports types for all LoaderContext properties from astro/loaders to make it easier to use them in custom loaders.
The ScopedDataStore interface (which was previously internal) is renamed to DataStore, to reflect the fact that it’s the only public API for the data store.
#11861 3ab3b4e Thanks @bluwy! - Cleans up Astro-specfic metadata attached to vfile.data in Remark and Rehype plugins. Previously, the metadata was attached in different locations with inconsistent names. The metadata is now renamed as below:
vfile.data.__astroHeadings -> vfile.data.astro.headingsvfile.data.imagePaths -> vfile.data.astro.imagePathsThe types of imagePaths has also been updated from Set<string> to string[]. The vfile.data.astro.frontmatter metadata is left unchanged.
While we don’t consider these APIs public, they can be accessed by Remark and Rehype plugins that want to re-use Astro’s metadata. If you are using these APIs, make sure to access them in the new locations.
#11825 560ef15 Thanks @bluwy! - Updates internal Shiki rehype plugin to highlight code blocks as hast (using Shiki’s codeToHast() API). This allows a more direct Markdown and MDX processing, and improves the performance when building the project, but may cause issues with existing Shiki transformers.
If you are using Shiki transformers passed to markdown.shikiConfig.transformers, you must make sure they do not use the postprocess hook as it no longer runs on code blocks in .md and .mdx files. (See the Shiki documentation on transformer hooks for more information).
Code blocks in .mdoc files and <Code /> component do not use the internal Shiki rehype plugin and are unaffected.
#11819 2bdde80 Thanks @bluwy! - Updates the Astro config loading flow to ignore processing locally-linked dependencies with Vite (e.g. npm link, in a monorepo, etc). Instead, they will be normally imported by the Node.js runtime the same way as other dependencies from node_modules.
Previously, Astro would process locally-linked dependencies which were able to use Vite features like TypeScript when imported by the Astro config file.
However, this caused confusion as integration authors may test against a package that worked locally, but not when published. This method also restricts using CJS-only dependencies because Vite requires the code to be ESM. Therefore, Astro’s behaviour is now changed to ignore processing any type of dependencies by Vite.
In most cases, make sure your locally-linked dependencies are built to JS before running the Astro project, and the config loading should work as before.
#11878 334948c Thanks @ascorbic! - Adds a new function refreshContent to the astro:server:setup hook that allows integrations to refresh the content layer. This can be used, for example, to register a webhook endpoint during dev, or to open a socket to a CMS to listen for changes.
By default, refreshContent will refresh all collections. You can optionally pass a loaders property, which is an array of loader names. If provided, only collections that use those loaders will be refreshed. For example, A CMS integration could use this property to only refresh its own collections.
You can also pass a context object to the loaders. This can be used to pass arbitrary data, such as the webhook body, or an event from the websocket.
{ name: 'my-integration', hooks: { 'astro:server:setup': async ({ server, refreshContent }) => { server.middlewares.use('/_refresh', async (req, res) => { if(req.method !== 'POST') { res.statusCode = 405 res.end('Method Not Allowed'); return } let body = ''; req.on('data', chunk => { body += chunk.toString(); }); req.on('end', async () => { try { const webhookBody = JSON.parse(body); await refreshContent({ context: { webhookBody }, loaders: ['my-loader'] }); res.writeHead(200, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ message: 'Content refreshed successfully' })); } catch (error) { res.writeHead(500, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ error: 'Failed to refresh content: ' + error.message })); } }); }); } }}Updated dependencies [3ab3b4e, 560ef15, 3ab3b4e]:
#11870 8e5257a Thanks @ArmandPhilippot! - Fixes typo in documenting the fallbackType property in i18n routing
#11884 e450704 Thanks @ascorbic! - Correctly handles content layer data where the transformed value does not match the input schema
#11900 80b4a18 Thanks @delucis! - Fixes the user-facing type of the new i18n.routing.fallbackType option to be optional
#11826 7315050 Thanks @matthewp! - Deprecate Astro.glob
The Astro.glob function has been deprecated in favor of Content Collections and import.meta.glob.
import.meta.glob(https://vitejs.dev/guide/features.html#glob-import).Also consider using glob packages from npm, like fast-glob, especially if statically generating your site, as it is faster for most use-cases.
The easiest path is to migrate to import.meta.glob like so:
const posts = Astro.glob('./posts/*.md');const posts = Object.values(import.meta.glob('./posts/*.md', { eager: true }));#11827 a83e362 Thanks @matthewp! - Prevent usage of astro:content in the client
Usage of astro:content in the client has always been discouraged because it leads to all of your content winding up in your client bundle, and can possibly leaks secrets.
This formally makes doing so impossible, adding to the previous warning with errors.
In the future Astro might add APIs for client-usage based on needs.
#11253 4e5cc5a Thanks @kevinzunigacuellar! - Changes the data returned for page.url.current, page.url.next, page.url.prev, page.url.first and page.url.last to include the value set for base in your Astro config.
Previously, you had to manually prepend your configured value for base to the URL path. Now, Astro automatically includes your base value in next and prev URLs.
If you are using the paginate() function for “previous” and “next” URLs, remove any existing base value as it is now added for you:
---export async function getStaticPaths({ paginate }) { const astronautPages = [{ astronaut: 'Neil Armstrong', }, { astronaut: 'Buzz Aldrin', }, { astronaut: 'Sally Ride', }, { astronaut: 'John Glenn', }]; return paginate(astronautPages, { pageSize: 1 });}const { page } = Astro.props;// `base: /'docs'` configured in `astro.config.mjs` const prev = "/docs" + page.url.prev; const prev = page.url.prev;---<a id="prev" href={prev}>Back</a>#11698 05139ef Thanks @ematipico! - Adds a new property to the globals Astro and APIContext called routePattern. The routePattern represents the current route (component)
that is being rendered by Astro. It’s usually a path pattern will look like this: blog/[slug]:
---const route = Astro.routePattern;console.log(route); // it will log "blog/[slug]"---export const GET = (ctx) => { console.log(ctx.routePattern); // it will log src/pages/index.js return new Response.json({ loreum: 'ipsum' });};#11791 9393243 Thanks @bluwy! - Updates Astro’s default <script> rendering strategy and removes the experimental.directRenderScript option as this is now the default behavior: scripts are always rendered directly. This new strategy prevents scripts from being executed in pages where they are not used.
Scripts will directly render as declared in Astro files (including existing features like TypeScript, importing node_modules, and deduplicating scripts). You can also now conditionally render scripts in your Astro file.
However, this means scripts are no longer hoisted to the <head>, multiple scripts on a page are no longer bundled together, and the <script> tag may interfere with the CSS styling.
As this is a potentially breaking change to your script behavior, please review your <script> tags and ensure that they behave as expected.
#11767 d1bd1a1 Thanks @ascorbic! - Refactors content layer sync to use a queue
#11729 1c54e63 Thanks @ematipico! - Adds a new variant sync for the astro:config:setup hook’s command property. This value is set when calling the command astro sync.
If your integration previously relied on knowing how many variants existed for the command property, you must update your logic to account for this new option.
#11743 cce0894 Thanks @ph1p! - Adds a new, optional property timeout for the client:idle directive.
This value allows you to specify a maximum time to wait, in milliseconds, before hydrating a UI framework component, even if the page is not yet done with its initial load. This means you can delay hydration for lower-priority UI elements with more control to ensure your element is interactive within a specified time frame.
<ShowHideButton client:idle={{ timeout: 500 }} />#11677 cb356a5 Thanks @ematipico! - Adds a new option fallbackType to i18n.routing configuration that allows you to control how fallback pages are handled.
When i18n.fallback is configured, this new routing option controls whether to redirect to the fallback page, or to rewrite the fallback page’s content in place.
The "redirect" option is the default value and matches the current behavior of the existing fallback system.
The option "rewrite" uses the new rewriting system to create fallback pages that render content on the original, requested URL without a browser refresh.
For example, the following configuration will generate a page /fr/index.html that will contain the same HTML rendered by the page /en/index.html when src/pages/fr/index.astro does not exist.
export default defineConfig({ i18n: { locals: ['en', 'fr'], defaultLocale: 'en', routing: { prefixDefaultLocale: true, fallbackType: 'rewrite', }, fallback: { fr: 'en', }, },});#11708 62b0d20 Thanks @martrapp! - Adds a new object swapFunctions to expose the necessary utility functions on astro:transitions/client that allow you to build custom swap functions to be used with view transitions.
The example below uses these functions to replace Astro’s built-in default swap function with one that only swaps the <main> part of the page:
<script> import { swapFunctions } from 'astro:transitions/client';
document.addEventListener('astro:before-swap', (e) => { e.swap = () => swapMainOnly(e.newDocument) });
function swapMainOnly(doc: Document) { swapFunctions.deselectScripts(doc); swapFunctions.swapRootAttributes(doc); swapFunctions.swapHeadElements(doc); const restoreFocusFunction = swapFunctions.saveFocus(); const newMain = doc.querySelector('main'); const oldMain = document.querySelector('main'); if (newMain && oldMain) { swapFunctions.swapBodyElement(newMain, oldMain); } else { swapFunctions.swapBodyElement(doc.body, document.body); } restoreFocusFunction(); };</script>See the view transitions guide for more information about hooking into the astro:before-swap lifecycle event and adding a custom swap implementation.
#11843 5b4070e Thanks @bholmesdev! - Exposes z from the new astro:schema module. This is the new recommended import source for all Zod utilities when using Astro Actions.
z will no longer be exposed from astro:actions. To use z in your actions, import it from astro:schema instead:
import { defineAction, z,} from 'astro:actions'; import { z } from 'astro:schema';#11843 5b4070e Thanks @bholmesdev! - The Astro Actions API introduced behind a flag in v4.8.0 is no longer experimental and is available for general use.
Astro Actions allow you to define and call backend functions with type-safety, performing data fetching, JSON parsing, and input validation for you.
Actions can be called from client-side components and HTML forms. This gives you to flexibility to build apps using any technology: React, Svelte, HTMX, or just plain Astro components. This example calls a newsletter action and renders the result using an Astro component:
---import { actions } from 'astro:actions';const result = Astro.getActionResult(actions.newsletter);---
{result && !result.error && <p>Thanks for signing up!</p>}<form method="POST" action={actions.newsletter}> <input type="email" name="email" /> <button>Sign up</button></form>If you were previously using this feature, please remove the experimental flag from your Astro config:
import { defineConfig } from 'astro'
export default defineConfig({ experimental: { actions: true, }})If you have been waiting for stabilization before using Actions, you can now do so.
For more information and usage examples, see our brand new Actions guide.
#11677 cb356a5 Thanks @ematipico! - Fixes a bug in the logic of Astro.rewrite() which led to the value for base, if configured, being automatically prepended to the rewrite URL passed. This was unintended behavior and has been corrected, and Astro now processes the URLs exactly as passed.
If you use the rewrite() function on a project that has base configured, you must now prepend the base to your existing rewrite URL:
export default defineConfig({ base: '/blog',});export function onRequest(ctx, next) { return ctx.rewrite("/about") return ctx.rewrite("/blog/about")}#11862 0e35afe Thanks @ascorbic! - BREAKING CHANGE to experimental content layer loaders only!
Passes AstroConfig instead of AstroSettings object to content layer loaders.
This will not affect you unless you have created a loader that uses the settings object. If you have, you will need to update your loader to use the config object instead.
export default function myLoader() { return { name: 'my-loader' async load({ settings }) { const base = settings.config.base; async load({ config }) { const base = config.base; // ... } }}Other properties of the settings object are private internals, and should not be accessed directly. If you think you need access to other properties, please open an issue to discuss your use case.
#11772 6272e6c Thanks @bluwy! - Uses magicast to update the config for astro add
#11845 440a4be Thanks @bluwy! - Replaces execa with tinyexec internally
#11858 8bab233 Thanks @ascorbic! - Correctly resolves content layer images when filePath is not set
#11847 45b599c Thanks @ascorbic! - Fixes a case where Vite would be imported by the SSR runtime, causing bundling errors and bloat.
#11822 6fcaab8 Thanks @bluwy! - Marks internal vite-plugin-fileurl plugin with enforce: 'pre'
#11713 497324c Thanks @voidfill! - Prevents prefetching of the same urls with different hashes.
#11814 2bb72c6 Thanks @eduardocereto! - Updates the documentation for experimental Content Layer API with a corrected code example
#11842 1ffaae0 Thanks @stephan281094! - Fixes a typo in the MissingImageDimension error message
#11828 20d47aa Thanks @bholmesdev! - Improves error message when invalid data is returned by an Action.
#11798 e9e2139 Thanks @matthewp! - Unflag globalRoutePriority
The previously experimental feature globalRoutePriority is now the default in Astro 5.
This was a refactoring of route prioritization in Astro, making it so that injected routes, file-based routes, and redirects are all prioritized using the same logic. This feature has been enabled for all Starlight projects since it was added and should not affect most users.
#11679 ea71b90 Thanks @florian-lefebvre! - The astro:env feature introduced behind a flag in v4.10.0 is no longer experimental and is available for general use. If you have been waiting for stabilization before using astro:env, you can now do so.
This feature lets you configure a type-safe schema for your environment variables, and indicate whether they should be available on the server or the client.
To configure a schema, add the env option to your Astro config and define your client and server variables. If you were previously using this feature, please remove the experimental flag from your Astro config and move your entire env configuration unchanged to a top-level option.
import { defineConfig, envField } from 'astro/config';
export default defineConfig({ env: { schema: { API_URL: envField.string({ context: 'client', access: 'public', optional: true }), PORT: envField.number({ context: 'server', access: 'public', default: 4321 }), API_SECRET: envField.string({ context: 'server', access: 'secret' }), }, },});You can import and use your defined variables from the appropriate /client or /server module:
---import { API_URL } from 'astro:env/client';import { API_SECRET_TOKEN } from 'astro:env/server';
const data = await fetch(`${API_URL}/users`, { method: 'GET', headers: { 'Content-Type': 'application/json', Authorization: `Bearer ${API_SECRET_TOKEN}`, },});---
<script> import { API_URL } from 'astro:env/client';
fetch(`${API_URL}/ping`);</script>#11788 7c0ccfc Thanks @ematipico! - Updates the default value of security.checkOrigin to true, which enables Cross-Site Request Forgery (CSRF) protection by default for pages rendered on demand.
If you had previously configured security.checkOrigin: true, you no longer need this set in your Astro config. This is now the default and it is safe to remove.
To disable this behavior and opt out of automatically checking that the “origin” header matches the URL sent by each request, you must explicitly set security.checkOrigin: false:
export default defineConfig({ security: { checkOrigin: false }})#11741 6617491 Thanks @bluwy! - Removes internal JSX handling and moves the responsibility to the @astrojs/mdx package directly. The following exports are also now removed:
astro/jsx/babel.jsastro/jsx/component.jsastro/jsx/index.jsastro/jsx/renderer.jsastro/jsx/server.jsastro/jsx/transform-options.jsIf your project includes .mdx files, you must upgrade @astrojs/mdx to the latest version so that it doesn’t rely on these entrypoints to handle your JSX.
#11782 9a2aaa0 Thanks @Princesseuh! - Makes the compiledContent property of Markdown content an async function, this change should fix underlying issues where sometimes when using a custom image service and images inside Markdown, Node would exit suddenly without any error message.
---import * as myPost from "../post.md";
const content = myPost.compiledContent(); const content = await myPost.compiledContent();---
<Fragment set:html={content} />#11770 cfa6a47 Thanks @Princesseuh! - Removed support for the Squoosh image service. As the underlying library libsquoosh is no longer maintained, and the image service sees very little usage we have decided to remove it from Astro.
Our recommendation is to use the base Sharp image service, which is more powerful, faster, and more actively maintained.
import { squooshImageService } from "astro/config";import { defineConfig } from "astro/config";
export default defineConfig({ image: { service: squooshImageService() }});If you are using this service, and cannot migrate to the base Sharp image service, a third-party extraction of the previous service is available here: https://github.com/Princesseuh/astro-image-service-squoosh
#11780 c6622ad Thanks @Princesseuh! - Deprecates the Squoosh image service, to be removed in Astro 5.0. We recommend migrating to the default Sharp service.
#11732 4cd6c43 Thanks @matthewp! - Use GET requests with preloading for Server Islands
Server Island requests include the props used to render the island as well as any slots passed in (excluding the fallback slot). Since browsers have a max 4mb URL length we default to using a POST request to avoid overflowing this length.
However in reality most usage of Server Islands are fairly isolated and won’t exceed this limit, so a GET request is possible by passing this same information via search parameters.
Using GET means we can also include a <link rel="preload"> tag to speed up the request.
This change implements this, with safe fallback to POST.
#11773 86a3391 Thanks @ematipico! - Changes messages logged when using unsupported, deprecated, or experimental adapter features for clarity
#11774 c6400ab Thanks @florian-lefebvre! - Fixes the path returned by injectTypes
#11771 49650a4 Thanks @florian-lefebvre! - Fixes an error thrown by astro sync when an astro:env virtual module is imported inside the Content Collections config
#11744 b677429 Thanks @bluwy! - Disables the WebSocket server when creating a Vite server for loading config files
#11809 62e97a2 Thanks @bholmesdev! - Fixes usage of .transform(), .refine(), .passthrough(), and other effects on Action form inputs.
#11812 260c4be Thanks @bholmesdev! - Exposes ActionAPIContext type from the astro:actions module.
#11813 3f7630a Thanks @bholmesdev! - Fixes unexpected undefined value when calling an action from the client without a return value.
#11794 3691a62 Thanks @bholmesdev! - Fixes unexpected warning log when using Actions on “hybrid” rendered projects.
#11801 9f943c1 Thanks @delucis! - Fixes a bug where the filePath property was not available on content collection entries when using the content layer file() loader with a JSON file that contained an object instead of an array. This was breaking use of the image() schema utility among other things.
#11780 c6622ad Thanks @Princesseuh! - Deprecates the Squoosh image service, to be removed in Astro 5.0. We recommend migrating to the default Sharp service.
#11790 41c3fcb Thanks @sarah11918! - Updates the documentation for experimental astro:env with a corrected link to the RFC proposal
#11773 86a3391 Thanks @ematipico! - Changes messages logged when using unsupported, deprecated, or experimental adapter features for clarity
#11745 89bab1e Thanks @bluwy! - Prints prerender dynamic value usage warning only if it’s used
#11774 c6400ab Thanks @florian-lefebvre! - Fixes the path returned by injectTypes
#11730 2df49a6 Thanks @florian-lefebvre! - Simplifies path operations of astro sync
#11771 49650a4 Thanks @florian-lefebvre! - Fixes an error thrown by astro sync when an astro:env virtual module is imported inside the Content Collections config
#11744 b677429 Thanks @bluwy! - Disables the WebSocket server when creating a Vite server for loading config files
#10742 b6fbdaa Thanks @ematipico! - The lowest version of Node supported by Astro is now Node v18.17.1 and higher.
#11715 d74617c Thanks @Princesseuh! - Refactor the exported types from the astro module. There should normally be no breaking changes, but if you relied on some previously deprecated types, these might now have been fully removed.
In most cases, updating your code to move away from previously deprecated APIs in previous versions of Astro should be enough to fix any issues.
#11660 e90f559 Thanks @bluwy! - Fixes attribute rendering for non-boolean HTML attributes with boolean values to match proper attribute handling in browsers.
Previously, non-boolean attributes may not have included their values when rendered to HTML. In Astro v5.0, the values are now explicitly rendered as ="true" or ="false"
In the following .astro examples, only allowfullscreen is a boolean attribute:
<!-- src/pages/index.astro --><!-- `allowfullscreen` is a boolean attribute --><p allowfullscreen={true}></p><p allowfullscreen={false}></p>
<!-- `inherit` is *not* a boolean attribute --><p inherit={true}></p><p inherit={false}></p>
<!-- `data-*` attributes are not boolean attributes --><p data-light={true}></p><p data-light={false}></p>Astro v5.0 now preserves the full data attribute with its value when rendering the HTML of non-boolean attributes:
<p allowfullscreen></p><p></p>
<p inherit="true"></p><p inherit></p><p inherit="false"></p>
<p data-light></p><p data-light="true"></p><p></p><p data-light="false"></p>If you rely on attribute values, for example to locate elements or to conditionally render, update your code to match the new non-boolean attribute values:
el.getAttribute('inherit') === ''el.getAttribute('inherit') === 'false'
el.hasAttribute('data-light')el.dataset.light === 'true'#11714 8a53517 Thanks @matthewp! - Remove support for functionPerRoute
This change removes support for the functionPerRoute option both in Astro and @astrojs/vercel.
This option made it so that each route got built as separate entrypoints so that they could be loaded as separate functions. The hope was that by doing this it would decrease the size of each function. However in practice routes use most of the same code, and increases in function size limitations made the potential upsides less important.
Additionally there are downsides to functionPerRoute, such as hitting limits on the number of functions per project. The feature also never worked with some Astro features like i18n domains and request rewriting.
Given this, the feature has been removed from Astro.
#11725 6c1560f Thanks @ascorbic! - Prevents content layer importing node builtins in runtime
#11692 35af73a Thanks @matthewp! - Prevent errant HTML from crashing server islands
When an HTML minifier strips away the server island comment, the script can’t correctly know where the end of the fallback content is. This makes it so that it simply doesn’t remove any DOM in that scenario. This means the fallback isn’t removed, but it also doesn’t crash the browser.
#11727 3c2f93b Thanks @florian-lefebvre! - Fixes a type issue when using the Content Layer in dev
#11657 a23c69d Thanks @bluwy! - Deprecates the option for route-generating files to export a dynamic value for prerender. Only static values are now supported (e.g. export const prerender = true or = false). This allows for better treeshaking and bundling configuration in the future.
Adds a new "astro:route:setup" hook to the Integrations API to allow you to dynamically set options for a route at build or request time through an integration, such as enabling on-demand server rendering.
To migrate from a dynamic export to the new hook, update or remove any dynamic prerender exports from individual routing files:
export const prerender = import.meta.env.PRERENDERInstead, create an integration with the "astro:route:setup" hook and update the route’s prerender option:
import { defineConfig } from 'astro/config';import { loadEnv } from 'vite';
export default defineConfig({ integrations: [setPrerender()],});
function setPrerender() { const { PRERENDER } = loadEnv(process.env.NODE_ENV, process.cwd(), '');
return { name: 'set-prerender', hooks: { 'astro:route:setup': ({ route }) => { if (route.component.endsWith('/blog/[slug].astro')) { route.prerender = PRERENDER; } }, }, };}#11360 a79a8b0 Thanks @ascorbic! - Adds a new injectTypes() utility to the Integration API and refactors how type generation works
Use injectTypes() in the astro:config:done hook to inject types into your user’s project by adding a new a *.d.ts file.
The filename property will be used to generate a file at /.astro/integrations/<normalized_integration_name>/<normalized_filename>.d.ts and must end with ".d.ts".
The content property will create the body of the file, and must be valid TypeScript.
Additionally, injectTypes() returns a URL to the normalized path so you can overwrite its content later on, or manipulate it in any way you want.
export default { name: 'my-integration', 'astro:config:done': ({ injectTypes }) => { injectTypes({ filename: 'types.d.ts', content: "declare module 'virtual:my-integration' {}", }); },};Codegen has been refactored. Although src/env.d.ts will continue to work as is, we recommend you update it:
/// <reference types="astro/client" />/// <reference path="../.astro/types.d.ts" />/// <reference path="../.astro/env.d.ts" />/// <reference path="../.astro/actions.d.ts" />#11605 d3d99fb Thanks @jcayzac! - Adds a new property meta to Astro’s built-in <Code /> component.
This allows you to provide a value for Shiki’s meta attribute to pass options to transformers.
The following example passes an option to highlight lines 1 and 3 to Shiki’s tranformerMetaHighlight:
---import { Code } from 'astro:components';import { transformerMetaHighlight } from '@shikijs/transformers';---
<Code code={code} lang="js" transformers={[transformerMetaHighlight()]} meta="{1,3}" />#11360 a79a8b0 Thanks @ascorbic! - Adds support for Intellisense features (e.g. code completion, quick hints) for your content collection entries in compatible editors under the experimental.contentIntellisense flag.
import { defineConfig } from 'astro';
export default defineConfig({ experimental: { contentIntellisense: true, },});When enabled, this feature will generate and add JSON schemas to the .astro directory in your project. These files can be used by the Astro language server to provide Intellisense inside content files (.md, .mdx, .mdoc).
Note that at this time, this also require enabling the astro.content-intellisense option in your editor, or passing the contentIntellisense: true initialization parameter to the Astro language server for editors using it directly.
See the experimental content Intellisense docs for more information updates as this feature develops.
#11360 a79a8b0 Thanks @ascorbic! - Adds experimental support for the Content Layer API.
The new Content Layer API builds upon content collections, taking them beyond local files in src/content/ and allowing you to fetch content from anywhere, including remote APIs. These new collections work alongside your existing content collections, and you can migrate them to the new API at your own pace. There are significant improvements to performance with large collections of local files.
To try out the new Content Layer API, enable it in your Astro config:
import { defineConfig } from 'astro';
export default defineConfig({ experimental: { contentLayer: true, },});You can then create collections in your src/content/config.ts using the Content Layer API.
The core of the new Content Layer API is the loader, a function that fetches content from a source and caches it in a local data store. Astro 4.14 ships with built-in glob() and file() loaders to handle your local Markdown, MDX, Markdoc, and JSON files:
import { defineCollection, z } from 'astro:content';import { glob } from 'astro/loaders';
const blog = defineCollection({ // The ID is a slug generated from the path of the file relative to `base` loader: glob({ pattern: '**/*.md', base: './src/data/blog' }), schema: z.object({ title: z.string(), description: z.string(), publishDate: z.coerce.date(), }),});
export const collections = { blog };You can then query using the existing content collections functions, and enjoy a simplified render() function to display your content:
---import { getEntry, render } from 'astro:content';
const post = await getEntry('blog', Astro.params.slug);
const { Content } = await render(entry);---
<Content />You’re not restricted to the built-in loaders – we hope you’ll try building your own. You can fetch content from anywhere and return an array of entries:
const countries = defineCollection({ loader: async () => { const response = await fetch('https://restcountries.com/v3.1/all'); const data = await response.json(); // Must return an array of entries with an id property, // or an object with IDs as keys and entries as values return data.map((country) => ({ id: country.cca3, ...country, })); }, // optionally add a schema to validate the data and make it type-safe for users // schema: z.object...});
export const collections = { countries };For more advanced loading logic, you can define an object loader. This allows incremental updates and conditional loading, and gives full access to the data store. It also allows a loader to define its own schema, including generating it dynamically based on the source API. See the the Content Layer API RFC for more details.
Loaders are better when they’re shared. You can create a package that exports a loader and publish it to npm, and then anyone can use it on their site. We’re excited to see what the community comes up with! To get started, take a look at some examples. Here’s how to load content using an RSS/Atom feed loader:
import { defineCollection } from 'astro:content';import { feedLoader } from '@ascorbic/feed-loader';
const podcasts = defineCollection({ loader: feedLoader({ url: 'https://feeds.99percentinvisible.org/99percentinvisible', }),});
export const collections = { podcasts };To find out more about using the Content Layer API, check out the Content Layer RFC and share your feedback.
#11716 f4057c1 Thanks @florian-lefebvre! - Fixes content types sync in dev
#11645 849e4c6 Thanks @bluwy! - Refactors internally to use node:util parseArgs instead of yargs-parser
#11712 791d809 Thanks @matthewp! - Fix mixed use of base + trailingSlash in Server Islands
#11709 3d8ae76 Thanks @matthewp! - Fix adapter causing Netlify to break
#11678 34da907 Thanks @ematipico! - Fixes a case where omitting a semicolon and line ending with carriage return - CRLF - in the prerender option could throw an error.
#11535 932bd2e Thanks @matthewp! - Encrypt server island props
Server island props are now encrypted with a key generated at build-time. This is intended to prevent accidentally leaking secrets caused by exposing secrets through prop-passing. This is not intended to allow a server island to be trusted to skip authentication, or to protect against any other vulnerabilities other than secret leakage.
See the RFC for an explanation: https://github.com/withastro/roadmap/blob/server-islands/proposals/server-islands.md#props-serialization
#11655 dc0a297 Thanks @billy-le! - Fixes Astro Actions input validation when using default values with a form input.
#11689 c7bda4c Thanks @ematipico! - Fixes an issue in the Astro actions, where the size of the generated cookie was exceeding the size permitted by the Set-Cookie header.
#11653 32be549 Thanks @florian-lefebvre! - Updates astro:env docs to reflect current developments and usage guidance
#11658 13b912a Thanks @bholmesdev! - Fixes orThrow() type when calling an Action without an input validator.
#11603 f31d466 Thanks @bholmesdev! - Improves user experience when render an Action result from a form POST request:
?_astroAction=NAME flag when a result is rendered.Also improves the DX of directing to a new route on success. Actions will now redirect to the route specified in your action string on success, and redirect back to the previous page on error. This follows the routing convention of established backend frameworks like Laravel.
For example, say you want to redirect to a /success route when actions.signup succeeds. You can add /success to your action string like so:
<form method="POST" action={'/success' + actions.signup}></form>/success.You can retrieve the action result from either page using the Astro.getActionResult() function.
This uses a temporary cookie to forward the action result to the next page. The cookie will be deleted when that page is rendered.
⚠ The action result is not encrypted. In general, we recommend returning minimal data from an action handler to a) avoid leaking sensitive information, and b) avoid unexpected render issues once the temporary cookie is deleted. For example, a login function may return a user’s session id to retrieve from your Astro frontmatter, rather than the entire user object.
#11648 589d351 Thanks @bholmesdev! - Fixes unexpected error when refreshing a POST request from a form using Actions.
#11600 09ec2ca Thanks @ArmandPhilippot! - Deprecates getEntryBySlug and getDataEntryById functions exported by astro:content in favor of getEntry.
#11593 81d7150 Thanks @bholmesdev! - Adds support for Date(), Map(), and Set() from action results. See devalue for a complete list of supported values.
Also fixes serialization exceptions when deploying Actions with edge middleware on Netlify and Vercel.
#11617 196092a Thanks @abubakriz! - Fix toolbar audit incorrectly flagging images as above the fold.
#11634 2716f52 Thanks @bholmesdev! - Fixes internal server error when calling an Astro Action without arguments on Vercel.
#11628 9aaf58c Thanks @madbook! - Ensures consistent CSS chunk hashes across different environments
#11584 a65ffe3 Thanks @bholmesdev! - Removes async local storage dependency from Astro Actions. This allows Actions to run in Cloudflare and Stackblitz without opt-in flags or other configuration.
This also introduces a new convention for calling actions from server code. Instead of calling actions directly, you must wrap function calls with the new Astro.callAction() utility.
callAction()is meant to trigger an action from server code.getActionResult()usage with form submissions remains unchanged.
---import { actions } from 'astro:actions';
const result = await Astro.callAction(actions.searchPosts, { searchTerm: Astro.url.searchParams.get('search'),});---
{ result.data && { /* render the results */ }}If you call actions directly from server code, update function calls to use the Astro.callAction() wrapper for pages and context.callAction() for endpoints:
---import { actions } from 'astro:actions';
const result = await actions.searchPosts({ searchTerm: 'test' }); const result = await Astro.callAction(actions.searchPosts, { searchTerm: 'test' });---If you deploy with Cloudflare and added the nodejs_compat or nodejs_als flags for Actions, we recommend removing these:
compatibility_flags = [ "nodejs_compat", "nodejs_als"]You can also remove node:async_hooks from the vite.ssr.external option in your astro.config file:
import { defineConfig } from 'astro/config';
export default defineConfig({ vite: { ssr: { external: ["node:async_hooks"] } }})
#11507 a62345f Thanks @ematipico! - Adds color-coding to the console output during the build to highlight slow pages.
Pages that take more than 500 milliseconds to render will have their build time logged in red. This change can help you discover pages of your site that are not performant and may need attention.
#11379 e5e2d3e Thanks @alexanderniebuhr! - The experimental.contentCollectionJsonSchema feature introduced behind a flag in v4.5.0 is no longer experimental and is available for general use.
If you are working with collections of type data, Astro will now auto-generate JSON schema files for your editor to get IntelliSense and type-checking. A separate file will be created for each data collection in your project based on your collections defined in src/content/config.ts using a library called zod-to-json-schema.
This feature requires you to manually set your schema’s file path as the value for $schema in each data entry file of the collection:
{ "$schema": "../../../.astro/collections/authors.schema.json", "name": "Armand", "skills": ["Astro", "Starlight"]}Alternatively, you can set this value in your editor settings. For example, to set this value in VSCode’s json.schemas setting, provide the path of files to match and the location of your JSON schema:
{ "json.schemas": [ { "fileMatch": ["/src/content/authors/**"], "url": "./.astro/collections/authors.schema.json" } ]}If you were previously using this feature, please remove the experimental flag from your Astro config:
import { defineConfig } from 'astro'
export default defineConfig({ experimental: { contentCollectionJsonSchema: true }})If you have been waiting for stabilization before using JSON Schema generation for content collections, you can now do so.
Please see the content collections guide for more about this feature.
#11542 45ad326 Thanks @ematipico! - The experimental.rewriting feature introduced behind a flag in v4.8.0 is no longer experimental and is available for general use.
Astro.rewrite() and context.rewrite() allow you to render a different page without changing the URL in the browser. Unlike using a redirect, your visitor is kept on the original page they visited.
Rewrites can be useful for showing the same content at multiple paths (e.g. /products/shoes/men/ and /products/men/shoes/) without needing to maintain two identical source files.
Rewrites are supported in Astro pages, endpoints, and middleware.
Return Astro.rewrite() in the frontmatter of a .astro page component to display a different page’s content, such as fallback localized content:
---return Astro.rewrite("/es/articles/introduction")---Use context.rewrite() in endpoints, for example to reroute to a different page:
export function GET(context) { if (!context.locals.allowed) { return context.rewrite('/'); }}The middleware next() function now accepts a parameter with the same type as the rewrite() function. For example, with next("/"), you can call the next middleware function with a new Request.
export function onRequest(context, next) { if (!context.cookies.get('allowed')) { return next('/'); // new signature } return next();}If you were previously using this feature, please remove the experimental flag from your Astro config:
export default defineConfig({ experimental: { rewriting: true }})If you have been waiting for stabilization before using rewrites in Astro, you can now do so.
Please see the routing guide in docs for more about using this feature.
#11509 dfbca06 Thanks @bluwy! - Excludes hoisted scripts and styles from Astro components imported with ?url or ?raw
#11561 904f1e5 Thanks @ArmandPhilippot! - Uses the correct pageSize default in page.size JSDoc comment
#11571 1c3265a Thanks @bholmesdev! - BREAKING CHANGE to the experimental Actions API only. Install the latest @astrojs/react integration as well if you’re using React 19 features.
Make .safe() the default return value for actions. This means { data, error } will be returned when calling an action directly. If you prefer to get the data while allowing errors to throw, chain the .orThrow() modifier.
import { actions } from 'astro:actions';
// Beforeconst { data, error } = await actions.like.safe();// Afterconst { data, error } = await actions.like();
// Beforeconst newLikes = await actions.like();// Afterconst newLikes = await actions.like.orThrow();To migrate your existing action calls:
.safe from existing safe action calls.orThrow to existing unsafe action calls#11546 7f26de9 Thanks @ArmandPhilippot! - Remove “SSR Only” mention in Astro.redirect inline documentation and update reference link.
#11525 8068131 Thanks @ematipico! - Fixes a case where the build was failing when experimental.actions was enabled, an adapter was in use, and there were not actions inside the user code base.
#11574 e3f29d4 Thanks @Princesseuh! - Fixes line with the error not being properly highlighted in the error overlay
#11570 84189b6 Thanks @bholmesdev! - BREAKING CHANGE to the experimental Actions API only. Install the latest @astrojs/react integration as well if you’re using React 19 features.
Updates the Astro Actions fallback to support action={actions.name} instead of using getActionProps(). This will submit a form to the server in zero-JS scenarios using a search parameter:
---import { actions } from 'astro:actions';---
<form action={actions.logOut}> <!--output: action="?_astroAction=logOut"--> <button>Log Out</button></form>You may also construct form action URLs using string concatenation, or by using the URL() constructor, with the an action’s .queryString property:
---import { actions } from 'astro:actions';
const confirmationUrl = new URL('/confirmation', Astro.url);confirmationUrl.search = actions.queryString;---
<form method="POST" action={confirmationUrl.pathname}> <button>Submit</button></form>getActionProps() is now deprecated. To use the new fallback pattern, remove the getActionProps() input from your form and pass your action function to the form action attribute:
---import { actions, getActionProps,} from 'astro:actions';---
<form method="POST" action={actions.logOut}> <form method="POST"> <input {...getActionProps(actions.logOut)} /> <button>Log Out</button></form>#11559 1953dbb Thanks @bryanwood! - Allows actions to return falsy values without an error
#11553 02c85b5 Thanks @ematipico! - Fixes an issue in content collection caching, where two documents with the same contents were generating an error during the build.
#11548 602c5bf Thanks @TheOtterlord! - Fixes astro add for packages with only prerelease versions
#11566 0dcef3a Thanks @Princesseuh! - Fixes DomException errors not being handled properly
#11529 504c383 Thanks @matthewp! - Fix server islands with trailingSlash: always
#11505 8ff7658 Thanks @ematipico! - Enhances the dev server logging when rewrites occur during the lifecycle or rendering.
The dev server will log the status code before and after a rewrite:
08:16:48 [404] (rewrite) /foo/about 200ms08:22:13 [200] (rewrite) /about 23ms#11506 026e8ba Thanks @sarah11918! - Fixes typo in documenting the slot="fallback" attribute for Server Islands experimental feature.
#11508 ca335e1 Thanks @cramforce! - Escapes HTML in serialized props
#11501 4db78ae Thanks @martrapp! - Adds the missing export for accessing the getFallback() function of the client site router.
#11486 9c0c849 Thanks @ematipico! - Adds a new function called addClientRenderer to the Container API.
This function should be used when rendering components using the client:* directives. The addClientRenderer API must be used
after the use of the addServerRenderer:
const container = await experimental_AstroContainer.create();container.addServerRenderer({ renderer });container.addClientRenderer({ name: '@astrojs/react', entrypoint: '@astrojs/react/client.js' });const response = await container.renderToResponse(Component);#11500 4e142d3 Thanks @Princesseuh! - Fixes inferRemoteSize type not working
#11496 53ccd20 Thanks @alfawal! - Hide the dev toolbar on window.print() (CTRL + P)
#11341 49b5145 Thanks @madcampos! - Adds support for Shiki’s defaultColor option.
This option allows you to override the values of a theme’s inline style, adding only CSS variables to give you more flexibility in applying multiple color themes.
Configure defaultColor: false in your Shiki config to apply throughout your site, or pass to Astro’s built-in <Code> component to style an individual code block.
import { defineConfig } from 'astro/config';export default defineConfig({ markdown: { shikiConfig: { themes: { light: 'github-light', dark: 'github-dark', }, defaultColor: false, }, },});---import { Code } from 'astro:components';---
<Code code={`const useMyColors = true`} lang="js" defaultColor={false} />#11304 2e70741 Thanks @Fryuni! - Refactors the type for integration hooks so that integration authors writing custom integration hooks can now allow runtime interactions between their integration and other integrations.
This internal change should not break existing code for integration authors.
To declare your own hooks for your integration, extend the Astro.IntegrationHooks interface:
declare global { namespace Astro { interface IntegrationHooks { 'myLib:eventHappened': (your: string, parameters: number) => Promise<void>; } }}Call your hooks on all other integrations installed in a project at the appropriate time. For example, you can call your hook on initialization before either the Vite or Astro config have resolved:
import './types.ts';
export default (): AstroIntegration => { return { name: 'your-integration', hooks: { 'astro:config:setup': async ({ config }) => { for (const integration of config.integrations) { await integration.hooks['myLib:eventHappened'].?('your values', 123); } }, } }}Other integrations can also now declare your hooks:
import 'your-integration/types.ts';
export default (): AstroIntegration => { return { name: 'other-integration', hooks: { 'myLib:eventHappened': async (your, values) => { // ... }, }, };};#11305 d495df5 Thanks @matthewp! - Experimental Server Islands
Server Islands allow you to specify components that should run on the server, allowing the rest of the page to be more aggressively cached, or even generated statically. Turn any .astro component into a server island by adding the server:defer directive and optionally, fallback placeholder content:
---import Avatar from '../components/Avatar.astro';import GenericUser from '../components/GenericUser.astro';---
<header> <h1>Page Title</h1> <div class="header-right"> <Avatar server:defer> <GenericUser slot="fallback" /> </Avatar> </div></header>The server:defer directive can be used on any Astro component in a project using hybrid or server mode with an adapter. There are no special APIs needed inside of the island.
Enable server islands by adding the experimental flag to your Astro config with an appropriate output mode and adatper:
import { defineConfig } from 'astro/config';import netlify from '@astrojs/netlify';
export default defineConfig({ output: 'hybrid', adapter: netlify(), experimental { serverIslands: true, },});For more information, see the server islands documentation.
#11482 7c9ed71 Thanks @Princesseuh! - Adds a --noSync parameter to the astro check command to skip the type-gen step. This can be useful when running astro check inside packages that have Astro components, but are not Astro projects
#11098 36e30a3 Thanks @itsmatteomanf! - Adds a new inferRemoteSize() function that can be used to infer the dimensions of a remote image.
Previously, the ability to infer these values was only available by adding the [inferSize] attribute to the <Image> and <Picture> components or getImage(). Now, you can also access this data outside of these components.
This is useful for when you need to know the dimensions of an image for styling purposes or to calculate different densities for responsive images.
---import { inferRemoteSize, Image } from 'astro:assets';
const imageUrl = 'https://...';const { width, height } = await inferRemoteSize(imageUrl);---
<Image src={imageUrl} width={width / 2} height={height} densities={[1.5, 2]} />#11391 6f9b527 Thanks @ARipeAppleByYoursTruly! - Adds Shiki’s defaultColor option to the <Code /> component, giving you more control in applying multiple themes
#11176 a751458 Thanks @tsawada! - Adds two new values to the pagination page prop: page.first and page.last for accessing the URLs of the first and last pages.
#11477 7e9c4a1 Thanks @ematipico! - Fixes an issue where the development server was emitting a 404 status code when the user uses a rewrite that emits a 200 status code.
#11479 ca969d5 Thanks @florian-lefebvre! - Fixes a case where invalid astro:env variables at runtime would not throw correctly
#11489 061f1f4 Thanks @ematipico! - Move root inside the manifest and make serialisable
#11415 e9334d0 Thanks @florian-lefebvre! - Refactors how sync works and when it’s called. Fixes an issue with astro:env types in dev not being generated
#11478 3161b67 Thanks @bluwy! - Supports importing Astro components with Vite queries, like ?url, ?raw, and ?direct
#11491 fe3afeb Thanks @matthewp! - Fix for Server Islands in Vercel adapter
Vercel, and probably other adapters only allow pre-defined routes. This makes it so that the astro:build:done hook includes the _server-islands/ route as part of the route data, which is used to configure available routes.
#11483 34f9c25 Thanks @Princesseuh! - Fixes Astro not working on low versions of Node 18 and 20
Updated dependencies [49b5145]:
#11459 bc2e74d Thanks @mingjunlu! - Fixes false positive audit warnings on elements with the role “tabpanel”.
#11472 cb4e6d0 Thanks @delucis! - Avoids targeting all files in the src/ directory for eager optimization by Vite. After this change, only JSX, Vue, Svelte, and Astro components get scanned for early optimization.
#11387 b498461 Thanks @bluwy! - Fixes prerendering not removing unused dynamic imported chunks
#11437 6ccb30e Thanks @NuroDev! - Fixes a case where Astro’s config experimental.env.schema keys did not allow numbers. Numbers are still not allowed as the first character to be able to generate valid JavaScript identifiers
#11439 08baf56 Thanks @bholmesdev! - Expands the isInputError() utility from astro:actions to accept errors of any type. This should now allow type narrowing from a try / catch block.
import { actions, isInputError } from 'astro:actions';
try { await actions.like(new FormData());} catch (error) { if (isInputError(error)) { console.log(error.fields); }}#11452 0e66849 Thanks @FugiTech! - Fixes an issue where using .nullish() in a formdata Astro action would always parse as a string
#11438 619f07d Thanks @bholmesdev! - Exposes utility types from astro:actions for the defineAction handler (ActionHandler) and the ActionError code (ActionErrorCode).
#11456 17e048d Thanks @RickyC0626! - Fixes astro dev --open unexpected behavior that spawns a new tab every time a config file is saved
#11337 0a4b31f Thanks @florian-lefebvre! - Adds a new property experimental.env.validateSecrets to allow validating private variables on the server.
By default, this is set to false and only public variables are checked on start. If enabled, secrets will also be checked on start (dev/build modes). This is useful for example in some CIs to make sure all your secrets are correctly set before deploying.
import { defineConfig, envField } from 'astro/config';
export default defineConfig({ experimental: { env: { schema: { // ... }, validateSecrets: true, }, },});#11443 ea4bc04 Thanks @bholmesdev! - Expose new ActionReturnType utility from astro:actions. This infers the return type of an action by passing typeof actions.name as a type argument. This example defines a like action that returns likes as an object:
import { defineAction } from 'astro:actions';
export const server = { like: defineAction({ handler: () => { /* ... */ return { likes: 42 }; }, }),};In your client code, you can infer this handler return value with ActionReturnType:
import { actions, ActionReturnType } from 'astro:actions';
type LikesResult = ActionReturnType<typeof actions.like>;// -> { likes: number }#11436 7dca68f Thanks @bholmesdev! - Fixes astro:actions autocompletion for the defineAction accept property
#11455 645e128 Thanks @florian-lefebvre! - Improves astro:env invalid variables errors
#11362 93993b7 Thanks @ematipico! - Fixes an issue where creating manually the i18n middleware could break the logic of the functions of the virtual module astro:i18n
#11349 98d9ce4 Thanks @ematipico! - Fixes an issue where Astro didn’t throw an error when Astro.rewrite was used without providing the experimental flag
#11352 a55ee02 Thanks @ematipico! - Fixes an issue where the rewrites didn’t update the status code when using manual i18n routing.
#11388 3a223b4 Thanks @mingjunlu! - Adjusts the color of punctuations in error overlay.
#11369 e6de11f Thanks @bluwy! - Fixes attribute rendering for non-boolean attributes with boolean values
#11335 4c4741b Thanks @ematipico! - Reverts #11292, which caused a regression to the input type
#11326 41121fb Thanks @florian-lefebvre! - Fixes a case where running astro sync when using the experimental astro:env feature would fail if environment variables were missing
#11338 9752a0b Thanks @zaaakher! - Fixes svg icon margin in devtool tooltip title to look coherent in rtl and ltr layouts
#11331 f1b78a4 Thanks @bluwy! - Removes resolve package and simplify internal resolve check
#11339 8fdbf0e Thanks @matthewp! - Remove non-fatal errors from telemetry
Previously we tracked non-fatal errors in telemetry to get a good idea of the types of errors that occur in astro dev. However this has become noisy over time and results in a lot of data that isn’t particularly useful. This removes those non-fatal errors from being tracked.
#11308 44c61dd Thanks @ematipico! - Fixes an issue where custom 404.astro and 500.astro were not returning the correct status code when rendered inside a rewriting cycle.
#11302 0622567 Thanks @martrapp! - Fixes an issue with the view transition router when redirecting to an URL with different origin.
Updated dependencies [b6afe6a, 41064ce]:
#11197 4b46bd9 Thanks @braebo! - Adds ShikiTransformer support to the <Code /> component with a new transformers prop.
Note that transformers only applies classes and you must provide your own CSS rules to target the elements of your code block.
---import { transformerNotationFocus } from '@shikijs/transformers';import { Code } from 'astro:components';
const code = `const foo = 'hello'const bar = ' world'console.log(foo + bar) // [!code focus]`;---
<Code {code} lang="js" transformers={[transformerNotationFocus()]} />
<style is:global> pre.has-focused .line:not(.focused) { filter: blur(1px); }</style>#11134 9042be0 Thanks @florian-lefebvre! - Improves the developer experience of the 500.astro file by passing it a new error prop.
When an error is thrown, the special src/pages/500.astro page now automatically receives the error as a prop. This allows you to display more specific information about the error on a custom 500 page.
---interface Props { error: unknown;}
const { error } = Astro.props;---
<div>{error instanceof Error ? error.message : 'Unknown error'}</div>If an error occurs rendering this page, your host’s default 500 error page will be shown to your visitor in production, and Astro’s default error overlay will be shown in development.
#11280 fd3645f Thanks @ascorbic! - Fixes a bug that prevented cookies from being set when using experimental rewrites
#11275 bab700d Thanks @syhily! - Drop duplicated brackets in data collections schema generation.
#11272 ea987d7 Thanks @ematipico! - Fixes a case where rewriting / would cause an issue, when trailingSlash was set to "never".
#11272 ea987d7 Thanks @ematipico! - Reverts a logic where it wasn’t possible to rewrite /404 in static mode. It’s now possible again
#11264 5a9c9a6 Thanks @Fryuni! - Fixes type generation for empty content collections
#11279 9a08d74 Thanks @ascorbic! - Improves type-checking and error handling to catch case where an image import is passed directly to getImage()
#11292 7f8f347 Thanks @jdtjenkins! - Fixes a case where defineAction autocomplete for the accept prop would not show "form" as a possible value
#11273 cb4d078 Thanks @ascorbic! - Corrects an inconsistency in dev where middleware would run for prerendered 404 routes.
Middleware is not run for prerendered 404 routes in production, so this was incorrect.
#11284 f4b029b Thanks @ascorbic! - Fixes an issue that would break Astro.request.url and Astro.request.headers in astro dev if HTTP/2 was enabled.
HTTP/2 is now enabled by default in astro dev if https is configured in the Vite config.
#11213 94ac7ef Thanks @florian-lefebvre! - Removes the PUBLIC_ prefix constraint for astro:env public variables
#11213 94ac7ef Thanks @florian-lefebvre! - BREAKING CHANGE to the experimental astro:env feature only
Server secrets specified in the schema must now be imported from astro:env/server. Using getSecret() is no longer required to use these environment variables in your schema:
import { getSecret } from 'astro:env/server'const API_SECRET = getSecret("API_SECRET")import { API_SECRET } from 'astro:env/server'Note that using getSecret() with these keys is still possible, but no longer involves any special handling and the raw value will be returned, just like retrieving secrets not specified in your schema.
#11234 4385bf7 Thanks @ematipico! - Adds a new function called addServerRenderer to the Container API. Use this function to manually store renderers inside the instance of your container.
This new function should be preferred when using the Container API in environments like on-demand pages:
import type { APIRoute } from 'astro';import { experimental_AstroContainer } from 'astro/container';import reactRenderer from '@astrojs/react/server.js';import vueRenderer from '@astrojs/vue/server.js';import ReactComponent from '../components/button.jsx';import VueComponent from '../components/button.vue';
// MDX runtime is contained inside the Astro coreimport mdxRenderer from 'astro/jsx/server.js';
// In case you need to import a custom rendererimport customRenderer from '../renderers/customRenderer.js';
export const GET: APIRoute = async (ctx) => { const container = await experimental_AstroContainer.create(); container.addServerRenderer({ renderer: reactRenderer }); container.addServerRenderer({ renderer: vueRenderer }); container.addServerRenderer({ renderer: customRenderer }); // You can pass a custom name too container.addServerRenderer({ name: 'customRenderer', renderer: customRenderer, }); const vueComponent = await container.renderToString(VueComponent); return await container.renderToResponse(Component);};#11249 de60c69 Thanks @markgaze! - Fixes a performance issue with JSON schema generation
#11242 e4fc2a0 Thanks @ematipico! - Fixes a case where the virtual module astro:container wasn’t resolved
#11236 39bc3a5 Thanks @ascorbic! - Fixes a case where symlinked content collection directories were not correctly resolved
#11258 d996db6 Thanks @ascorbic! - Adds a new error RewriteWithBodyUsed that throws when Astro.rewrite is used after the request body has already been read.
#11243 ba2b14c Thanks @V3RON! - Fixes a prerendering issue for libraries in node_modules when a folder with an underscore is in the path.
#11244 d07d2f7 Thanks @ematipico! - Improves the developer experience of the custom 500.astro page in development mode.
Before, in development, an error thrown during the rendering phase would display the default error overlay, even when users had the 500.astro page.
Now, the development server will display the 500.astro and the original error is logged in the console.
#11240 2851b0a Thanks @ascorbic! - Ignores query strings in module identifiers when matching “.astro” file extensions in Vite plugin
#11245 e22be22 Thanks @bluwy! - Refactors prerendering chunk handling to correctly remove unused code during the SSR runtime
#11231 58d7dbb Thanks @ematipico! - Fixes a regression for getViteConfig, where the inline config wasn’t merged in the final config.
#11228 1e293a1 Thanks @ascorbic! - Updates getCollection() to always return a cloned array
#11207 7d9aac3 Thanks @ematipico! - Fixes an issue in the rewriting logic where old data was not purged during the rewrite flow. This caused some false positives when checking the validity of URL path names during the rendering phase.
#11189 75a8fe7 Thanks @ematipico! - Improve error message when using getLocaleByPath on path that doesn’t contain any locales.
#11195 0a6ab6f Thanks @florian-lefebvre! - Adds support for enums to astro:env
You can now call envField.enum:
import { defineConfig, envField } from 'astro/config';
export default defineConfig({ experimental: { env: { schema: { API_VERSION: envField.enum({ context: 'server', access: 'secret', values: ['v1', 'v2'], }), }, }, },});#11210 66fc028 Thanks @matthewp! - Close the iterator only after rendering is complete
#11195 0a6ab6f Thanks @florian-lefebvre! - Adds additional validation options to astro:env
astro:env schema datatypes string and number now have new optional validation rules:
import { defineConfig, envField } from 'astro/config';
export default defineConfig({ experimental: { env: { schema: { FOO: envField.string({ // ... max: 32, min: 3, length: 12, url: true, includes: 'foo', startsWith: 'bar', endsWith: 'baz', }), BAR: envField.number({ // ... gt: 2, min: 3, lt: 10, max: 9, int: true, }), }, }, },});#11211 97724da Thanks @matthewp! - Let middleware handle the original request URL
#10607 7327c6a Thanks @frankbits! - Fixes an issue where a leading slash created incorrect conflict resolution between pages generated from static routes and catch-all dynamic routes
#11198 8b9a499 Thanks @florian-lefebvre! - Fixes a case where astro:env getSecret would not retrieve environment variables properly in dev and build modes
#11206 734b98f Thanks @florian-lefebvre! - BREAKING CHANGE to the experimental astro:env feature only
Updates the adapter astro:env entrypoint from astro:env/setup to astro/env/setup
#11205 8c45391 Thanks @Nin3lee! - Fixes a typo in the config reference
#10974 2668ef9 Thanks @florian-lefebvre! - Adds experimental support for the astro:env API.
The astro:env API lets you configure a type-safe schema for your environment variables, and indicate whether they should be available on the server or the client. Import and use your defined variables from the appropriate /client or /server module:
---import { PUBLIC_APP_ID } from 'astro:env/client';import { PUBLIC_API_URL, getSecret } from 'astro:env/server';const API_TOKEN = getSecret('API_TOKEN');
const data = await fetch(`${PUBLIC_API_URL}/users`, { method: 'POST', headers: { 'Content-Type': 'application/json', Authorization: `Bearer ${API_TOKEN}`, }, body: JSON.stringify({ appId: PUBLIC_APP_ID }),});---To define the data type and properties of your environment variables, declare a schema in your Astro config in experimental.env.schema. The envField helper allows you define your variable as a string, number, or boolean and pass properties in an object:
import { defineConfig, envField } from 'astro/config';
export default defineConfig({ experimental: { env: { schema: { PUBLIC_API_URL: envField.string({ context: 'client', access: 'public', optional: true }), PUBLIC_PORT: envField.number({ context: 'server', access: 'public', default: 4321 }), API_SECRET: envField.string({ context: 'server', access: 'secret' }), }, }, },});There are three kinds of environment variables, determined by the combination of context (client or server) and access (private or public) settings defined in your env.schema:
Public client variables: These variables end up in both your final client and server bundles, and can be accessed from both client and server through the astro:env/client module:
import { PUBLIC_API_URL } from 'astro:env/client';Public server variables: These variables end up in your final server bundle and can be accessed on the server through the astro:env/server module:
import { PUBLIC_PORT } from 'astro:env/server';Secret server variables: These variables are not part of your final bundle and can be accessed on the server through the getSecret() helper function available from the astro:env/server module:
import { getSecret } from 'astro:env/server';
const API_SECRET = getSecret('API_SECRET'); // typedconst SECRET_NOT_IN_SCHEMA = getSecret('SECRET_NOT_IN_SCHEMA'); // string | undefinedNote: Secret client variables are not supported because there is no safe way to send this data to the client. Therefore, it is not possible to configure both context: "client" and access: "secret" in your schema.
To learn more, check out the documentation.
#11192 58b10a0 Thanks @liruifengv! - Improves DX by throwing the original AstroUserError when an error is thrown inside a .mdx file.
#11136 35ef53c Thanks @ematipico! - Errors that are emitted during a rewrite are now bubbled up and shown to the user. A 404 response is not returned anymore.
#11144 803dd80 Thanks @ematipico! - The integration now exposes a function called getContainerRenderer, that can be used inside the Container APIs to load the relative renderer.
import { experimental_AstroContainer as AstroContainer } from 'astro/container';import ReactWrapper from '../src/components/ReactWrapper.astro';import { loadRenderers } from 'astro:container';import { getContainerRenderer } from '@astrojs/react';
test('ReactWrapper with react renderer', async () => { const renderers = await loadRenderers([getContainerRenderer()]); const container = await AstroContainer.create({ renderers, }); const result = await container.renderToString(ReactWrapper);
expect(result).toContain('Counter'); expect(result).toContain('Count: <!-- -->5');});#11144 803dd80 Thanks @ematipico! - BREAKING CHANGE to the experimental Container API only
Changes the type of the renderers option of the AstroContainer::create function and adds a dedicated function loadRenderers() to load the rendering scripts from renderer integration packages (@astrojs/react, @astrojs/preact, @astrojs/solid-js, @astrojs/svelte, @astrojs/vue, @astrojs/lit, and @astrojs/mdx).
You no longer need to know the individual, direct file paths to the client and server rendering scripts for each renderer integration package. Now, there is a dedicated function to load the renderer from each package, which is available from getContainerRenderer():
import { experimental_AstroContainer as AstroContainer } from 'astro/container';import ReactWrapper from '../src/components/ReactWrapper.astro';import { loadRenderers } from "astro:container";import { getContainerRenderer } from "@astrojs/react";
test('ReactWrapper with react renderer', async () => { const renderers = await loadRenderers([getContainerRenderer()]) const renderers = [ { name: '@astrojs/react', clientEntrypoint: '@astrojs/react/client.js', serverEntrypoint: '@astrojs/react/server.js', }, ]; const container = await AstroContainer.create({ renderers, }); const result = await container.renderToString(ReactWrapper);
expect(result).toContain('Counter'); expect(result).toContain('Count: <!-- -->5');});The new loadRenderers() helper function is available from astro:container, a virtual module that can be used when running the Astro container inside vite.
#11136 35ef53c Thanks @ematipico! - It’s not possible anymore to use Astro.rewrite("/404") inside static pages. This isn’t counterproductive because Astro will end-up emitting a page that contains the HTML of 404 error page.
It’s still possible to use Astro.rewrite("/404") inside on-demand pages, or pages that opt-out from prerendering.
#11191 6e29a17 Thanks @matthewp! - Fixes a case where Astro.url would be incorrect when having build.format set to 'preserve' in the Astro config
#11182 40b0b4d Thanks @ematipico! - Fixes an issue where Astro.rewrite wasn’t carrying over the body of a Request in on-demand pages.
#11194 97fbe93 Thanks @ematipico! - Fixes an issue where the function getViteConfig wasn’t returning the correct merged Astro configuration
#11171 ff8004f Thanks @Princesseuh! - Guard globalThis.astroAsset usage in proxy code to avoid errors in wonky situations
#11178 1734c49 Thanks @theoephraim! - Improves isPromise utility to check the presence of then on an object before trying to access it - which can cause undesired side-effects on Proxy objects
#11183 3cfa2ac Thanks @66Leo66! - Suggest pnpm dlx instead of pnpx in update check.
#11147 2d93902 Thanks @kitschpatrol! - Fixes invalid MIME types in Picture source elements for jpg and svg extensions, which was preventing otherwise valid source variations from being shown by the browser
#11141 19df89f Thanks @ematipico! - Fixes an internal error that prevented the AstroContainer to render the Content component.
You can now write code similar to the following to render content collections:
const entry = await getEntry(collection, slug);const { Content } = await entry.render();const content = await container.renderToString(Content);#11170 ba20c71 Thanks @matthewp! - Retain client scripts in content cache
#11138 98e0372 Thanks @ematipico! - You can now pass props when rendering a component using the Container APIs:
import { experimental_AstroContainer as AstroContainer } from 'astro/contaienr';import Card from '../src/components/Card.astro';
const container = await AstroContainer.create();const result = await container.renderToString(Card, { props: { someState: true, },});
#11051 12a1bcc Thanks @ematipico! - Introduces an experimental Container API to render .astro components in isolation.
This API introduces three new functions to allow you to create a new container and render an Astro component returning either a string or a Response:
create(): creates a new instance of the container.renderToString(): renders a component and return a string.renderToResponse(): renders a component and returns the Response emitted by the rendering phase.The first supported use of this new API is to enable unit testing. For example, with vitest, you can create a container to render your component with test data and check the result:
import { experimental_AstroContainer as AstroContainer } from 'astro/container';import { expect, test } from 'vitest';import Card from '../src/components/Card.astro';
test('Card with slots', async () => { const container = await AstroContainer.create(); const result = await container.renderToString(Card, { slots: { default: 'Card content', }, });
expect(result).toContain('This is a card'); expect(result).toContain('Card content');});For a complete reference, see the Container API docs.
For a feature overview, and to give feedback on this experimental API, see the Container API roadmap discussion.
#11021 2d4c8fa Thanks @ematipico! - The CSRF protection feature that was introduced behind a flag in v4.6.0 is no longer experimental and is available for general use.
To enable the stable version, add the new top-level security option in astro.config.mjs. If you were previously using the experimental version of this feature, also delete the experimental flag:
export default defineConfig({ experimental: { security: { csrfProtection: { origin: true } } }, security: { checkOrigin: true }})Enabling this setting performs a check that the "origin" header, automatically passed by all modern browsers, matches the URL sent by each Request.
This check is executed only for pages rendered on demand, and only for the requests POST, PATCH, DELETE and PUT with one of the following "content-type" headers: 'application/x-www-form-urlencoded', 'multipart/form-data', 'text/plain'.
If the "origin" header doesn’t match the pathname of the request, Astro will return a 403 status code and won’t render the page.
For more information, see the security configuration docs.
#11022 be68ab4 Thanks @ematipico! - The i18nDomains routing feature introduced behind a flag in v3.4.0 is no longer experimental and is available for general use.
This routing option allows you to configure different domains for individual locales in entirely server-rendered projects using the @astrojs/node or @astrojs/vercel adapter with a site configured.
If you were using this feature, please remove the experimental flag from your Astro config:
import { defineConfig } from 'astro'
export default defineConfig({ experimental: { i18nDomains: true, }})If you have been waiting for stabilization before using this routing option, you can now do so.
Please see the internationalization docs for more about this feature.
#11071 8ca7c73 Thanks @bholmesdev! - Adds two new functions experimental_getActionState() and experimental_withState() to support the React 19 useActionState() hook when using Astro Actions. This introduces progressive enhancement when calling an Action with the withState() utility.
This example calls a like action that accepts a postId and returns the number of likes. Pass this action to the experimental_withState() function to apply progressive enhancement info, and apply to useActionState() to track the result:
import { actions } from 'astro:actions';import { experimental_withState } from '@astrojs/react/actions';
export function Like({ postId }: { postId: string }) { const [state, action, pending] = useActionState( experimental_withState(actions.like), 0 // initial likes );
return ( <form action={action}> <input type="hidden" name="postId" value={postId} /> <button disabled={pending}>{state} ❤️</button> </form> );}You can also access the state stored by useActionState() from your action handler. Call experimental_getActionState() with the API context, and optionally apply a type to the result:
import { defineAction, z } from 'astro:actions';import { experimental_getActionState } from '@astrojs/react/actions';
export const server = { like: defineAction({ input: z.object({ postId: z.string(), }), handler: async ({ postId }, ctx) => { const currentLikes = experimental_getActionState<number>(ctx); // write to database return currentLikes + 1; }, }),};#11101 a6916e4 Thanks @linguofeng! - Updates Astro’s code for adapters to use the header x-forwarded-for to initialize the clientAddress.
To take advantage of the new change, integration authors must upgrade the version of Astro in their adapter peerDependencies to 4.9.0.
#11071 8ca7c73 Thanks @bholmesdev! - Adds compatibility for Astro Actions in the React 19 beta. Actions can be passed to a form action prop directly, and Astro will automatically add metadata for progressive enhancement.
import { actions } from 'astro:actions';
function Like() { return ( <form action={actions.like}> {/* auto-inserts hidden input for progressive enhancement */} <button type="submit">Like</button> </form> );}#11088 9566fa0 Thanks @bholmesdev! - Allow actions to be called on the server. This allows you to call actions as utility functions in your Astro frontmatter, endpoints, and server-side UI components.
Import and call directly from astro:actions as you would for client actions:
---import { actions } from 'astro:actions';
await actions.like({ postId: Astro.params.postId });---#11112 29a8650 Thanks @bholmesdev! - Deprecate the getApiContext() function. API Context can now be accessed from the second parameter to your Action handler():
import { defineAction, z, getApiContext,} from 'astro:actions';
export const server = { login: defineAction({ input: z.object({ id: z.string }), handler(input, context) { const user = context.locals.auth(input.id); return user; } }),}#11073 f5c8fee Thanks @matthewp! - Prevent cache content from being left in dist folder
When contentCollectionsCache is enabled temporary cached content is copied into the outDir for processing. This fixes it so that this content is cleaned out, along with the rest of the temporary build JS.
#11054 f6b171e Thanks @bholmesdev! - Respect error status when handling Actions with a progressive fallback.
#11092 bfe9c73 Thanks @duckycoding-dev! - Change slot attribute of IntrinsicAttributes to match the definition of HTMLAttributes’s own slot attribute of type string | undefined | null
#10875 b5f95b2 Thanks @W1M0R! - Fixes a typo in a JSDoc annotation
#11111 a5d79dd Thanks @bholmesdev! - Fix unexpected headers warning on prerendered routes when using Astro Actions.
#11081 af42e05 Thanks @V3RON! - Correctly position inspection tooltip in RTL mode
When RTL mode is turned on, the inspection tooltip tend to overflow the window on the left side. Additional check has been added to prevent that.
#11065 1f988ed Thanks @ematipico! - Fixes a bug in the Astro rewrite logic, where rewriting the index with parameters - next("/?foo=bar") - didn’t work as expected.
#10924 3a0c02a Thanks @Its-Just-Nans! - Handle image-size errors by displaying a clearer message
#11058 749a7ac Thanks @matthewp! - Fix streaming in Node.js fast path
#11052 a05ca38 Thanks @florian-lefebvre! - Fixes a case where rewriting would conflict with the actions internal middleware
#11062 16f12e4 Thanks @ematipico! - Fixes a bug where astro build didn’t create custom 404.html and 500.html when a certain combination of i18n options was applied
#10965 a8f0372 Thanks @Elias-Chairi! - Update generator.ts to allow %23 (#) in dynamic urls
#11069 240a70a Thanks @ematipico! - Improves debug logging for on-demand pages
#11026 8dfb1a2 Thanks @bluwy! - Skips rendering script tags if it’s inlined and empty when experimental.directRenderScript is enabled
#11043 d0d1710 Thanks @bholmesdev! - Fixes minor type issues in actions component example
#10999 5f353e3 Thanks @bluwy! - The prefetch feature is updated to better support different browsers and different cache headers setup, including:
<link rel="prefetch"> if supported, or will fall back to fetch().prefetch() programmatic API’s with option is deprecated in favour of an automatic approach that will also try to use <link rel="prefetch> if supported, or will fall back to fetch().This change shouldn’t affect most sites and should instead make prefetching more effective.
#11041 6cc3fb9 Thanks @bholmesdev! - Fixes 500 errors when sending empty params or returning an empty response from an action.
#11028 771d1f7 Thanks @bholmesdev! - Throw on missing server output when using Astro Actions.
#11029 bd34452 Thanks @bholmesdev! - Actions: include validation error in thrown error message for debugging.
#11046 086694a Thanks @HiDeoo! - Fixes getViteConfig() type definition to allow passing an inline Astro configuration as second argument
#11026 8dfb1a2 Thanks @bluwy! - Fixes CSS handling if imported in a script tag in an Astro file when experimental.directRenderScript is enabled
#11020 2e2d6b7 Thanks @xsynaptic! - Add type declarations for import.meta.env.ASSETS_PREFIX when defined as an object for handling different file types.
#11030 18e7f33 Thanks @bholmesdev! - Actions: Fix missing message for custom Action errors.
#10981 ad9227c Thanks @mo! - Adds deprecated HTML attribute “name” to the list of valid attributes. This attribute has been replaced by the global id attribute in recent versions of HTML.
#11013 4ea38e7 Thanks @QingXia-Ela! - Prevents unhandledrejection error when checking for latest Astro version
#11034 5f2dd45 Thanks @arganaphang! - Add popovertargetaction to the attribute that can be passed to the button and input element
7418bb0 Thanks @bholmesdev! - Fix locals access from action handlers#10990 4161a2a Thanks @liruifengv! - fix incorrect actions path on windows
#10979 6fa89e8 Thanks @BryceRussell! - Fix loading of non-index routes that end with index.html
#10987 05db5f7 Thanks @ematipico! - Fix a regression where the flag experimental.rewriting was marked mandatory. Is is now optional.
#10975 6b640b3 Thanks @bluwy! - Passes the scoped style attribute or class to the <picture> element in the <Picture /> component so scoped styling can be applied to the <picture> element
#10935 ddd8e49 Thanks @bluwy! - Exports astro/jsx/rehype.js with utilities to generate an Astro metadata object
#10625 698c2d9 Thanks @goulvenclech! - Adds the ability for multiple pages to use the same component as an entrypoint when building an Astro integration. This change is purely internal, and aligns the build process with the behaviour in the development server.
#10906 7bbd664 Thanks @Princesseuh! - Adds a new radio checkbox component to the dev toolbar UI library (astro-dev-toolbar-radio-checkbox)
#10963 61f47a6 Thanks @delucis! - Adds support for passing an inline Astro configuration object to getViteConfig()
If you are using getViteConfig() to configure the Vitest test runner, you can now pass a second argument to control how Astro is configured. This makes it possible to configure unit tests with different Astro options when using Vitest’s workspaces feature.
import { getViteConfig } from 'astro/config';
export default getViteConfig( /* Vite configuration */ { test: {} }, /* Astro configuration */ { site: 'https://example.com', trailingSlash: 'never', });#10867 47877a7 Thanks @ematipico! - Adds experimental rewriting in Astro with a new rewrite() function and the middleware next() function.
The feature is available via an experimental flag in astro.config.mjs:
export default defineConfig({ experimental: { rewriting: true, },});When enabled, you can use rewrite() to render another page without changing the URL of the browser in Astro pages and endpoints.
---if (!Astro.props.allowed) { return Astro.rewrite('/');}---export function GET(ctx) { if (!ctx.locals.allowed) { return ctx.rewrite('/'); }}The middleware next() function now accepts a parameter with the same type as the rewrite() function. For example, with next("/"), you can call the next middleware function with a new Request.
export function onRequest(ctx, next) { if (!ctx.cookies.get('allowed')) { return next('/'); // new signature } return next();}NOTE: please read the RFC to understand the current expectations of the new APIs.
#10858 c0c509b Thanks @bholmesdev! - Adds experimental support for the Actions API. Actions let you define type-safe endpoints you can query from client components with progressive enhancement built in.
Actions help you write type-safe backend functions you can call from anywhere. Enable server rendering using the output property and add the actions flag to the experimental object:
{ output: 'hybrid', // or 'server' experimental: { actions: true, },}Declare all your actions in src/actions/index.ts. This file is the global actions handler.
Define an action using the defineAction() utility from the astro:actions module. These accept the handler property to define your server-side request handler. If your action accepts arguments, apply the input property to validate parameters with Zod.
This example defines two actions: like and comment. The like action accepts a JSON object with a postId string, while the comment action accepts FormData with postId, author, and body strings. Each handler updates your database and return a type-safe response.
import { defineAction, z } from 'astro:actions';
export const server = { like: defineAction({ input: z.object({ postId: z.string() }), handler: async ({ postId }, context) => { // update likes in db
return likes; }, }), comment: defineAction({ accept: 'form', input: z.object({ postId: z.string(),
body: z.string(), }), handler: async ({ postId }, context) => { // insert comments in db
return comment; }, }),};Then, call an action from your client components using the actions object from astro:actions. You can pass a type-safe object when using JSON, or a FormData object when using accept: 'form' in your action definition:
import { actions } from 'astro:actions';import { useState } from 'preact/hooks';
export function Like({ postId }: { postId: string }) { const [likes, setLikes] = useState(0); return ( <button onClick={async () => { const newLikes = await actions.like({ postId }); setLikes(newLikes); }} > {likes} likes </button> );}
export function Comment({ postId }: { postId: string }) { return ( <form onSubmit={async (e) => { e.preventDefault(); const formData = new FormData(e.target); const result = await actions.blog.comment(formData); // handle result }} > <input type="hidden" name="postId" value={postId} /> <label for="author">Author</label> <input id="author" type="text" name="author" /> <textarea rows={10} name="body"></textarea> <button type="submit">Post</button> </form> );}For a complete overview, and to give feedback on this experimental API, see the Actions RFC.
#10906 7bbd664 Thanks @Princesseuh! - Adds a new buttonBorderRadius property to the astro-dev-toolbar-button component for the dev toolbar component library. This property can be useful to make a fully rounded button with an icon in the center.
#10977 59571e8 Thanks @BryceRussell! - Improve error message when accessing clientAddress on prerendered routes
#10935 ddd8e49 Thanks @bluwy! - Improves the error message when failed to render MDX components
#10917 3412535 Thanks @jakobhellermann! - Fixes a case where the local server would crash when the host also contained the port, eg. with X-Forwarded-Host: hostname:8080 and X-Forwarded-Port: 8080 headers
#10959 685fc22 Thanks @bluwy! - Refactors internal handling of styles and scripts for content collections to improve build performance
#10889 4d905cc Thanks @matthewp! - Preserve content modules properly in cache
#10955 2978287 Thanks @florian-lefebvre! - Handles AstroUserErrors thrown while syncing content collections and exports BaseSchema and CollectionConfig types
#10911 a86dc9d Thanks @bluwy! - Skips adding CSS dependencies of CSS Vite modules as style tags in the HTML
#10900 36bb3b6 Thanks @martrapp! - Detects overlapping navigation and view transitions and automatically aborts all but the most recent one.
#10933 007d17f Thanks @Princesseuh! - Fixes app.toggleState not working correctly
#10931 4ce5ced Thanks @ktym4a! - Fixes toggleNotification()’s parameter type for the notification level not using the proper levels
#10665 7b4f284 Thanks @Princesseuh! - Adds new utilities to ease the creation of toolbar apps including defineToolbarApp to make it easier to define your toolbar app and app and server helpers for easier communication between the toolbar and the server. These new utilities abstract away some of the boilerplate code that is common in toolbar apps, and lower the barrier of entry for app authors.
For example, instead of creating an event listener for the app-toggled event and manually typing the value in the callback, you can now use the onAppToggled method. Additionally, communicating with the server does not require knowing any of the Vite APIs anymore, as a new server object is passed to the init function that contains easy to use methods for communicating with the server.
import { defineToolbarApp } from "astro/toolbar";
export default defineToolbarApp({ init(canvas, app, server) {
app.addEventListener("app-toggled", (e) => { console.log(`App is now ${state ? "enabled" : "disabled"}`);. });
app.onToggled(({ state }) => { console.log(`App is now ${state ? "enabled" : "disabled"}`); });
if (import.meta.hot) { import.meta.hot.send("my-app:my-client-event", { message: "world" }); }
server.send("my-app:my-client-event", { message: "world" })
if (import.meta.hot) { import.meta.hot.on("my-server-event", (data: {message: string}) => { console.log(data.message); }); }
server.on<{ message: string }>("my-server-event", (data) => { console.log(data.message); // data is typed using the type parameter }); },})Server helpers are also available on the server side, for use in your integrations, through the new toolbar object:
"astro:server:setup": ({ toolbar }) => { toolbar.on<{ message: string }>("my-app:my-client-event", (data) => { console.log(data.message); toolbar.send("my-server-event", { message: "hello" }); });}This is a backwards compatible change and your your existing dev toolbar apps will continue to function. However, we encourage you to build your apps with the new helpers, following the updated Dev Toolbar API documentation.
#10734 6fc4c0e Thanks @Princesseuh! - Astro will now automatically check for updates when you run the dev server. If a new version is available, a message will appear in the terminal with instructions on how to update. Updates will be checked once per 10 days, and the message will only appear if the project is multiple versions behind the latest release.
This behavior can be disabled by running astro preferences disable checkUpdates or setting the ASTRO_DISABLE_UPDATE_CHECK environment variable to false.
#10762 43ead8f Thanks @bholmesdev! - Enables type checking for JavaScript files when using the strictest TS config. This ensures consistency with Astro’s other TS configs, and fixes type checking for integrations like Astro DB when using an astro.config.mjs.
If you are currently using the strictest preset and would like to still disable .js files, set allowJS: false in your tsconfig.json.
#10861 b673bc8 Thanks @mingjunlu! - Fixes an issue where astro build writes type declaration files to outDir when it’s outside of root directory.
#10684 8b59d5d Thanks @PeterDraex! - Update sharp to 0.33 to fix issue with Alpine Linux
#10846 3294f7a Thanks @matthewp! - Prevent getCollection breaking in vitest
#10856 30cf82a Thanks @robertvanhoesel! - Prevents inputs with a name attribute of action or method to break ViewTransitions’ form submission
#10833 8d5f3e8 Thanks @renovate! - Updates esbuild dependency to v0.20. This should not affect projects in most cases.
#10801 204b782 Thanks @rishi-raj-jain! - Fixes an issue where images in MD required a relative specifier (e.g. ./)
Now, you can use the standard  syntax in MD files for images colocated in the same folder: no relative specifier required!
There is no need to update your project; your existing images will still continue to work. However, you may wish to remove any relative specifiers from these MD images as they are no longer necessary:
 <!-- This dog lives in the same folder as my article! -->#10841 a2df344 Thanks @martrapp! - Due to regression on mobile WebKit browsers, reverts a change made for JavaScript animations during view transitions.
#10799 dc74afca9f5eebc2d61331298d6ef187d92051e0 Thanks @martrapp! - Fixes an issue with persisted non-text input fields that have the focus during view transition navigation.
#10773 35e43ecdaae7adc4b9a0b974192a033568cfb3f0 Thanks @lilnasy! - Improves performance for frequent use of small components.
#10763 63132771373ce1510be3e8814897accc0bf62ef8 Thanks @matthewp! - Invalidate CC cache manifest when lockfile or config changes
#10811 77822a822b04b5113726f713df104e8667333c59 Thanks @AvinashReddy3108! - Update list of available integrations in the astro add CLI help.
#10732 a92e263beb6e0166f1f13c97803d1861793e2a99 Thanks @rishi-raj-jain! - Correctly sets build.assets directory during vite config setup
#10776 1607face67051b16d4648555f1001b2a9308e377 Thanks @fshafiee! - Fixes cookies type inference
#10796 90669472df3a05b33f0de46fd2d039e3eba7f7dd Thanks @bluwy! - Disables streaming when rendering site with output: "static"
#10782 b0589d05538fcc77dd3c38198bf93f3548362cd8 Thanks @nektro! - Handles possible null value when calling which-pm during dynamic package installation
#10774 308b5d8c122f44e7724bb2f3ad3aa5c43a83e584 Thanks @Princesseuh! - Fixes astro add sometimes modifying baseUrl unintentionally
#10783 4dbd545304d1a8af903c8c97f237eb55c988c40b Thanks @jurajkapsz! - Fixes Picture component specialFormatsFallback fallback check
#10775 06843121450899ecf0390ca4efaff6c9a6fe0f75 Thanks @Princesseuh! - Fixes assets endpoint in serverless returning 404 in certain situations where the website might be under a protected route
#10787 699f4559a279b374bddb3e5e48c72afe2709e8e7 Thanks @martrapp! - Fixes a timing issue in the view transition simulation.
#10708 742866c5669a2be4f8b5a4c861cadb933c381415 Thanks @horo-fox! - Limits parallel imports within getCollection() to prevent EMFILE errors when accessing files
#10755 c6d59b6fb7db20af957a8706c8159c50619235ef Thanks @ematipico! - Fixes a case where the i18n fallback failed to correctly redirect to the index page with SSR enabled
#10591 39988ef8e2c4c4888543c973e06d9b9939e4ac95 Thanks @mingjunlu! - Adds a new dev toolbar settings option to change the horizontal placement of the dev toolbar on your screen: bottom left, bottom center, or bottom right.
#10689 683d51a5eecafbbfbfed3910a3f1fbf0b3531b99 Thanks @ematipico! - Deprecate support for versions of Node.js older than v18.17.1 for Node.js 18, older than v20.0.3 for Node.js 20, and the complete Node.js v19 release line.
This change is in line with Astro’s Node.js support policy.
#10678 2e53b5fff6d292b7acdf8c30a6ecf5e5696846a1 Thanks @ematipico! - Adds a new experimental security option to prevent Cross-Site Request Forgery (CSRF) attacks. This feature is available only for pages rendered on demand:
import { defineConfig } from 'astro/config';export default defineConfig({ experimental: { security: { csrfProtection: { origin: true, }, }, },});Enabling this setting performs a check that the “origin” header, automatically passed by all modern browsers, matches the URL sent by each Request.
This experimental “origin” check is executed only for pages rendered on demand, and only for the requests POST, PATCH, DELETEandPUTwith one of the followingcontent-type` headers: ‘application/x-www-form-urlencoded’, ‘multipart/form-data’, ‘text/plain’.
It the “origin” header doesn’t match the pathname of the request, Astro will return a 403 status code and won’t render the page.
#10193 440681e7b74511a17b152af0fd6e0e4dc4014025 Thanks @ematipico! - Adds a new i18n routing option manual to allow you to write your own i18n middleware:
import { defineConfig } from 'astro/config';export default defineConfig({ i18n: { locales: ['en', 'fr'], defaultLocale: 'fr', routing: 'manual', },});Adding routing: "manual" to your i18n config disables Astro’s own i18n middleware and provides you with helper functions to write your own: redirectToDefaultLocale, notFound, and redirectToFallback:
import { redirectToDefaultLocale } from 'astro:i18n';export const onRequest = defineMiddleware(async (context, next) => { if (context.url.startsWith('/about')) { return next(); } else { return redirectToDefaultLocale(context, 302); }});Also adds a middleware function that manually creates Astro’s i18n middleware. This allows you to extend Astro’s i18n routing instead of completely replacing it. Run middleware in combination with your own middleware, using the sequence utility to determine the order:
import { defineMiddleware, sequence } from 'astro:middleware';import { middleware } from 'astro:i18n'; // Astro's own i18n routing config
export const userMiddleware = defineMiddleware();
export const onRequest = sequence( userMiddleware, middleware({ redirectToDefaultLocale: false, prefixDefaultLocale: true, }));#10671 9e14a78cb05667af9821948c630786f74680090d Thanks @fshafiee! - Adds the httpOnly, sameSite, and secure options when deleting a cookie
#10747 994337c99f84304df1147a14504659439a9a7326 Thanks @lilnasy! - Fixes an issue where functions could not be used as named slots.
#10750 7e825604ddf90c989537e07939a39dc249343897 Thanks @OliverSpeir! - Fixes a false positive for “Invalid tabindex on non-interactive element” rule for roleless elements ( div and span ).
#10745 d51951ce6278d4b59deed938d65e1cb72b5102df Thanks @lilnasy! - Fixes an issue where CLI commands could not report the reason for failure before exiting.
#10661 e2cd7f4291912dadd4a654bc7917856c58a72a97 Thanks @liruifengv! - Fixed errorOverlay theme toggle bug.
Updated dependencies [ccafa8d230f65c9302421a0ce0a0adc5824bfd55, 683d51a5eecafbbfbfed3910a3f1fbf0b3531b99]:
#10728 f508c4b7d54316e737f454a3777204b23636d4a0 Thanks @ematipico! - Fixes a regression where some very specific code rendered using expressive-code was not escaped properly.
#10737 8a30f257b1f3618b01212a591b82ad7a63c82fbb Thanks @lilnasy! - Fixes a regression where constructing and returning 404 responses from a middleware resulted in the dev server getting stuck in a loop.
#10719 b21b3ba307235510707ee9f5bd49f71473a07004 Thanks @ematipico! - Fixes a false positive for div and span elements when running the Dev Toolbar accessibility audits.
Those are special elements that don’t have an interaction assigned by default. Instead, it is assigned through the role attribute. This means that cases like the following are now deemed correct:
<div role="tablist"></div><span role="button" onclick="" onkeydown=""></span>#10688 799f6f3f29a3ef4f76347870a209ffa89651adfa Thanks @bluwy! - Marks renderer jsxImportSource and jsxTransformOptions options as deprecated as they are no longer used since Astro 3.0
#10657 93d353528fa1a85b67e3f1e9514ed2a1b42dfd94 Thanks @natemoo-re! - Improves the color contrast for notification badges on dev toolbar apps
#10693 1d26e9c7f7d8f47e33bc68d3b30bbffce25c7b63 Thanks @apetta! - Adds the disableremoteplayback attribute to MediaHTMLAttributes interface
#10695 a15975e41cb5eaf6ed8eb3ebaee676a17e433052 Thanks @bluwy! - Skips prerender chunk if building with static output
#10707 5e044a5eafaa206d2ef8b62c37d1bcd37f0a4078 Thanks @horo-fox! - Logs an error when a page’s getStaticPaths fails
#10686 fa0f593890502faf5709ab881fe0e45519d2f7af Thanks @bluwy! - Prevents inlining scripts if used by other chunks when using the experimental.directRenderScript option
#10679 ca6bb1f31ef041e6ccf8ef974856fa945ff5bb31 Thanks @martrapp! - Generates missing popstate events for Firefox when navigating to hash targets on the same page.
#10669 0464563e527f821e53d78028d9bbf3c4e1050f5b Thanks @Princesseuh! - Fixes Astro waiting infinitely in CI when a required package was not installed
#10666 55ddb2ba4889480f776a8d29b9dcd531b9f5ab3e Thanks @lilnasy! - Fixes an issue where forwarded requests did not include hostname on node-based adapters. This also makes error pages more reliable.
#10642 4f5dc14f315eba7ea6ec5cc8e5dacb0cb81288dd Thanks @OliverSpeir! - Fixes typing issues when using format and quality options with remote images
#10616 317d18ef8c9cf4fd13647518e3fd352774a86481 Thanks @NikolaRHristov! - This change disables the sharp libvips image cache as it errors when the
file is too small and operations are happening too fast (runs into a race
condition)
#10470 320c309ca9fbe51c40e6ba846d04a0cb49aced5f Thanks @liruifengv! - improves client:only error message
#10496 ce985631129e49f7ea90e6ea690ef9f9cf0e6987 Thanks @florian-lefebvre! - Makes the warning less scary when adding 3rd-party integrations using astro add
#10495 046d69d517118ab5c0e71604b321729d66ddffff Thanks @satyarohith! - This patch allows astro to run in node-compat mode in Deno. Deno doesn’t support
construction of response from async iterables in node-compat mode so we need to
use ReadableStream.
#10605 a16a829f4e25ad5c9a1b4557ec089fc8ab53320f Thanks @martrapp! - Fixes an issue with outdated page titles in browser history when using text fragments in view transition navigation.
#10584 e648c5575a8774af739231cfa9fc27a32086aa5f Thanks @duanwilliam! - Fixes a bug where JSX runtime would error on components with nullish prop values in certain conditions.
#10608 e31bea0704890ff92ce4f9b0ce536c1c90715f2c Thanks @matthewp! - Fixes bug with head content being pushed into body
Updated dependencies [2cf116f80cb5e421ab5cc5eb4a654e7b78c1b8de, 374efcdff9625ca43309d89e3b9cfc9174351512]:
#10596 20463a6c1e1271d8dc3cb0ab3419ee5c72abd218 Thanks @Princesseuh! - Add removeBase function
Updated dependencies [20463a6c1e1271d8dc3cb0ab3419ee5c72abd218]:
#10567 fbdc10f90f7baa5c49f2f53e3e4ce8f453814c01 Thanks @Princesseuh! - Fixes astro:assets not working when using complex config with vite.build.rollupOptions.output.assetFileNames
#10593 61e283e5a0d95b6ef5d3c4c985d6ee78f74bbd8e Thanks @Princesseuh! - Fixes Polymorphic type helper causing TypeScript errors in certain cases after the previous update
#10543 0fd36bdb383297b32cc523b57d2442132da41595 Thanks @matthewp! - Fixes inline stylesheets with content collections cache
#10582 a05953538fcf524786385830b99c0c5a015173e8 Thanks @lilnasy! - Fixes an issue where the dev server got stuck in a loop while routing responses with a 404 status code to the 404 route.
#10549 54c2f9707f5d038630143f769e3075c698474654 Thanks @admirsaheta! - Updates the HTMLAttributes type exported from astro to allow data attributes
#10562 348c1ca1323d0516c2dcf8e963343cd12cb5407f Thanks @apetta! - Fixes minor type issues inside the built-in components of Astro
#10550 34fa8e131b85531e6629390307108ffc4adb7ed1 Thanks @Skn0tt! - Fixes bug where server builds would include unneeded assets in SSR Function, potentially leading to upload errors on Vercel, Netlify because of size limits
Updated dependencies [c585528f446ccca3d4c643f4af5d550b93c18902]:
#10532 8306ce1ff7b71a2a0d7908336c9be462a54d395a Thanks @martrapp! - Fixes a style issue of client:only components in DEV mode during view transitions.
#10473 627e47d67af4846cea2acf26a96b4124001b26fc Thanks @bluwy! - Fixes and improves performance when rendering Astro JSX
#10504 8e4e554cc211e59c329c0a5d110c839c886ff120 Thanks @Princesseuh! - Update Babel version to fix regression in Babel’s 7.24.2.
Updated dependencies [19e42c368184013fc30d1e46753b9e9383bb2bdf]:
e4a6462751725878bfe47632eeafa6854cad5bf2 Thanks @firefoxic! - <link> tags created by astro for optimized stylesheets now do not include the closing forward slash. This slash is optional for void elements such as link, but made some html validation fail.#10455 c12666166db724915e42e37a048483c99f88e6d9 Thanks @lilnasy! - Adds a helpful error message that will be shown when an endpoint does not return a Response.
#10426 6a9a35ee15069541c3144012385366a3c689240a Thanks @markgaze! - Fixes an issue with generating JSON schemas when the schema is a function
#10448 fcece3658697248ab58f77b3d4a8b14d362f3c47 Thanks @lilnasy! - Fixes an issue where multiple rendering errors resulted in a crash of the SSR app server.
#10379 3776ecf0aa9e08a992d3ae76e90682fd04093721 Thanks @1574242600! - Fixes a routing issue with partially truncated dynamic segments.
#10442 f8e0ad3c52a37b8a2175fe2f5ff2bd0cd738f499 Thanks @Princesseuh! - Fixes small rendering issues with the dev toolbar in certain contexts
#10438 5b48cc0fc8383b0659a595afd3a6ee28b28779c3 Thanks @bholmesdev! - Generate Astro DB types when running astro sync.
#10456 1900a8f9bc337f3a882178d1770e10ab67fab0ce Thanks @martrapp! - Fixes an error when using astro:transtions/client without <ViewTransitions/>
128c7a36397d99608dea918885b68bd302d00e7f Thanks @lilnasy! - Fixes an issue where error pages did not have access to the Astro.locals fields provided by the adapter.#10410 055fe293c6702dd27bcd6c4f59297c6d4385abb1 Thanks @lilnasy! - Fixes an issue where configured redirects could not include certain characters in the target path.
#9820 8edc42aa7c209b12d98ecf20cdecccddf7314af0 Thanks @alexnguyennz! - Prevents fully formed URLs in attributes from being escaped
629c9d7c4d96ae5711d95601e738b3d31d268116 Thanks @mingjunlu! - Fixes an issue where dev toolbar x-ray didn’t escape props content.#10392 02aeb01cb8b62b9cc4dfe6069857219404343b73 Thanks @martrapp! - Fixes broken types for some functions of astro:transitions/client.
#10390 236cdbb611587692d3c781850cb949604677ef82 Thanks @bholmesdev! - Adds --help reference for new db and studio CLI commands
#10206 dc87214141e7f8406c0fdf6a7f425dad6dea6d3e Thanks @lilnasy! - Allows middleware to run when a matching page or endpoint is not found. Previously, a pages/404.astro or pages/[...catch-all].astro route had to match to allow middleware. This is now not necessary.
When a route does not match in SSR deployments, your adapter may show a platform-specific 404 page instead of running Astro’s SSR code. In these cases, you may still need to add a 404.astro or fallback route with spread params, or use a routing configuration option if your adapter provides one.
#9960 c081adf998d30419fed97d8fccc11340cdc512e0 Thanks @StandardGage! - Allows passing any props to the <Code /> component
#10102 e3f02f5fb1cf0dae3c54beb3a4af3dbf3b06abb7 Thanks @bluwy! - Adds a new experimental.directRenderScript configuration option which provides a more reliable strategy to prevent scripts from being executed in pages where they are not used.
This replaces the experimental.optimizeHoistedScript flag introduced in v2.10.4 to prevent unused components’ scripts from being included in a page unexpectedly. That experimental option no longer exists and must be removed from your configuration, whether or not you enable directRenderScript:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental: { optimizeHoistedScript: true, directRenderScript: true }});With experimental.directRenderScript configured, scripts are now directly rendered as declared in Astro files (including existing features like TypeScript, importing node_modules, and deduplicating scripts). You can also now conditionally render scripts in your Astro file.
However, this means scripts are no longer hoisted to the <head> and multiple scripts on a page are no longer bundled together. If you enable this option, you should check that all your <script> tags behave as expected.
This option will be enabled by default in Astro 5.0.
#10130 5a9528741fa98d017b269c7e4f013058028bdc5d Thanks @bluwy! - Stabilizes markdown.shikiConfig.experimentalThemes as markdown.shikiConfig.themes. No behaviour changes are made to this option.
#10189 1ea0a25b94125e4f6f2ac82b42f638e22d7bdffd Thanks @peng! - Adds the option to pass an object to build.assetsPrefix. This allows for the use of multiple CDN prefixes based on the target file type.
When passing an object to build.assetsPrefix, you must also specify a fallback domain to be used for all other file types not specified.
Specify a file extension as the key (e.g. ‘js’, ‘png’) and the URL serving your assets of that file type as the value:
import { defineConfig } from 'astro/config';
export default defineConfig({ build: { assetsPrefix: { js: 'https://js.cdn.example.com', mjs: 'https://js.cdn.example.com', // if you have .mjs files, you must add a new entry like this png: 'https://images.cdn.example.com', fallback: 'https://generic.cdn.example.com', }, },});#10252 3307cb34f17159dfd3f03144697040fcaa10e903 Thanks @Princesseuh! - Adds support for emitting warning and info notifications from dev toolbar apps.
When using the toggle-notification event, the severity can be specified through detail.level:
eventTarget.dispatchEvent( new CustomEvent('toggle-notification', { detail: { level: 'warning', }, }));#10186 959ca5f9f86ef2c0a5a23080cc01c25f53d613a9 Thanks @Princesseuh! - Adds the ability to set colors on all the included UI elements for dev toolbar apps. Previously, only badge and buttons could be customized.
#10136 9cd84bd19b92fb43ae48809f575ee12ebd43ea8f Thanks @matthewp! - Changes the default behavior of transition:persist to update the props of persisted islands upon navigation. Also adds a new view transitions option transition:persist-props (default: false) to prevent props from updating as needed.
Islands which have the transition:persist property to keep their state when using the <ViewTransitions /> router will now have their props updated upon navigation. This is useful in cases where the component relies on page-specific props, such as the current page title, which should update upon navigation.
For example, the component below is set to persist across navigation. This component receives a products props and might have some internal state, such as which filters are applied:
<ProductListing transition:persist products={products} />Upon navigation, this component persists, but the desired products might change, for example if you are visiting a category of products, or you are performing a search.
Previously the props would not change on navigation, and your island would have to handle updating them externally, such as with API calls.
With this change the props are now updated, while still preserving state.
You can override this new default behavior on a per-component basis using transition:persist-props=true to persist both props and state during navigation:
<ProductListing transition:persist-props="true" products={products} />#9977 0204b7de37bf626e1b97175b605adbf91d885386 Thanks @OliverSpeir! - Supports adding the data-astro-rerun attribute on script tags so that they will be re-executed after view transitions
<script is:inline data-astro-rerun> ...</script>#10145 65692fa7b5f4440c644c8cf3dd9bc50103d2c33b Thanks @alexanderniebuhr! - Adds experimental JSON Schema support for content collections.
This feature will auto-generate a JSON Schema for content collections of type: 'data' which can be used as the $schema value for TypeScript-style autocompletion/hints in tools like VSCode.
To enable this feature, add the experimental flag:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental: { contentCollectionJsonSchema: true }});This experimental implementation requires you to manually reference the schema in each data entry file of the collection:
{ "$schema": "../../../.astro/collections/test.schema.json", "test": "test"}Alternatively, you can set this in your VSCode json.schemas settings:
"json.schemas": [ { "fileMatch": [ "/src/content/test/**" ], "url": "../../../.astro/collections/test.schema.json" }]Note that this initial implementation uses a library with known issues for advanced Zod schemas, so you may wish to consult these limitations before enabling the experimental flag.
#10130 5a9528741fa98d017b269c7e4f013058028bdc5d Thanks @bluwy! - Migrates shikiji to shiki 1.0
#10268 2013e70bce16366781cc12e52823bb257fe460c0 Thanks @Princesseuh! - Adds support for page mutations to the audits in the dev toolbar. Astro will now rerun the audits whenever elements are added or deleted from the page.
#10217 5c7862a9fe69954f8630538ebb7212cd04b8a810 Thanks @Princesseuh! - Updates the UI for dev toolbar audits with new information
#10360 ac766647b0e6156b7c4a0bb9a11981fe168852d7 Thanks @nmattia! - Fixes an issue where some CLI commands attempted to directly read vite config files.
#10291 8107a2721b6abb07c3120ac90e03c39f2a44ab0c Thanks @bluwy! - Treeshakes unused Astro component scoped styles
#10368 78bafc5d661ff7dd071c241cb1303c4d8a774d21 Thanks @Princesseuh! - Updates the base tsconfig.json preset with jsx: 'preserve' in order to fix errors when importing Astro files inside .js and .ts files.
Updated dependencies [c081adf998d30419fed97d8fccc11340cdc512e0, 1ea0a25b94125e4f6f2ac82b42f638e22d7bdffd, 5a9528741fa98d017b269c7e4f013058028bdc5d, a31bbd7ff8f3ec62ee507f72d1d25140b82ffc18]:
33583e8b31ee8a33e26cf57f30bb422921f4745d Thanks @lilnasy! - Fixes an issue where elements slotted within interactive framework components disappeared after hydration.#10355 8ce9fffd44b0740621178d61fb1425bf4155c2d7 Thanks @ematipico! - Fixes a regression where full dynamic routes were prioritized over partial dynamic routes. Now a route like food-[name].astro is matched before [name].astro.
#10356 d121311a3f4b5345e344e31f75d4e7164d65f729 Thanks @mingjunlu! - Fixes an issue where getCollection might return undefined when content collection is empty
#10325 f33cce8f6c3a2e17847658cdedb015bd93cc1ee3 Thanks @lilnasy! - Fixes an issue where ctx.site included the configured base in API routes and middleware, unlike Astro.site in astro pages.
#10343 f973aa9110592fa9017bbe84387f22c24a6d7159 Thanks @ematipico! - Fixes some false positive in the dev toolbar a11y audits, by adding the a element to the list of interactive elements.
#10295 fdd5bf277e5c1cfa30c1bd2ca123f4e90e8d09d9 Thanks @rossrobino! - Adds a prefetch fallback when using the experimental.clientPrerender option. If prerendering fails, which can happen if Chrome extensions block prerendering, it will fallback to prefetching the URL. This works by adding a prefetch field to the speculationrules script, but does not create an extra request.
a2e9b2b936666b2a4779feb00dcb8ff0ab82c2ec Thanks @matthewp! - Fixes @astrojs/db loading TS in the fixturesf2e60a96754ed1d86001fe4d5d3a0c0ef657408d Thanks @FredKSchott! - Fixes an issue where slotting interactive components within a “client:only” component prevented all component code in the page from running.#10281 9deb919ff95b1d2ffe5a5f70ec683e32ebfafd05 Thanks @lilnasy! - Fixes an issue where 404.astro was ignored with i18n routing enabled.
#10279 9ba3e2605daee3861e3bf6c5768f1d8bced4709d Thanks @lilnasy! - Fixes an issue where returning redirect responses resulted in missing files with certain adapters.
#10319 19ecccedaab6d8fa0ff23711c88fa7d4fa34df38 Thanks @lilnasy! - Fixes an issue where streaming SSR responses sometimes failed with “iterator.result is not a function” on node-based adapters.
#10302 992537e79f1847b590a2e226aac88a47a6304f68 Thanks @florian-lefebvre! - Fixes an issue that causes static entrypoints build to fail because of the path in certain conditions. Specifically, it failed if the path had an extension (like .astro, .mdx etc) and such extension would be also within the path (like ./.astro/index.astro).
#10298 819d20a89c0d269333c2d397c1080884f516307a Thanks @Fryuni! - Fix an incorrect conflict resolution between pages generated from static routes and rest parameters
4bc360cd5f25496aca3232f6efb3710424a14a34 Thanks @sanman1k98! - Fixes jerky scrolling on IOS when using view transitions.#10278 a548a3a99c2835c19662fc38636f92b2bda26614 Thanks @Princesseuh! - Fixes original images sometimes being kept / deleted when they shouldn’t in both MDX and Markdoc
#10280 3488be9b59d1cb65325b0e087c33bcd74aaa4926 Thanks @bholmesdev! - Finalize db API to a shared db/ directory.
5e3e74b61daa2ba44c761c9ab5745818661a656e Thanks @Princesseuh! - Fixes dev toolbar warning about using the proper loading attributes on images using data: URIs#10287 a90d685d7 Thanks @ematipico! - Fixes an issue where in Node SSR, the image endpoint could be used maliciously to reveal unintended information about the underlying system.
Thanks to Google Security Team for reporting this issue.
#10274 e556151603a2f0173059d0f98fdcbec0610b48ff Thanks @lilnasy! - Fixes a regression introduced in v4.4.5 where image optimization did not work in dev mode when a base was configured.
#10263 9bdbed723e0aa4243d7d6ee64d1c1df3b75b9aeb Thanks @martrapp! - Adds auto completion for astro: event names when adding or removing event listeners on document.
#10284 07f89429a1ef5173d3321e0b362a9dc71fc74fe5 Thanks @Princesseuh! - Fixes an issue where in Node SSR, the image endpoint could be used maliciously to reveal unintended information about the underlying system.
Thanks to Google Security Team for reporting this issue.
#10247 fb773c9161bf8faa5ebd7e115f3564c3359e56ea Thanks @martrapp! - Fixes an issue where transition:animate="none" still allowed the browser-native morph animation.
#10248 8ae5d99534fc09d650e10e64a09b61a2807574f2 Thanks @ematipico! - Fixes an issue where multiple injected routes with the same entrypoint but different pattern were incorrectly cached, causing some of them not being rendered in the dev server.
#10250 57655a99db34e20e9661c039fab253b867013318 Thanks @log101! - Fixes the overwriting of localised index pages with redirects
#10239 9c21a9df6b03e36bd78dc553e13c55b9ef8c44cd Thanks @mingjunlu! - Improves the message of MiddlewareCantBeLoaded for clarity
#10222 ade9759cae74ca262b988260250bcb202235e811 Thanks @martrapp! - Adds a warning in DEV mode when using view transitions on a device with prefer-reduced-motion enabled.
#10251 9b00de0a76b4f4b5b808e8c78e4906a2497e8ecf Thanks @mingjunlu! - Fixes TypeScript type definitions for Code component theme and experimentalThemes props
#10221 4db82d9c7dce3b73fe43b86020fcfa326c1357ec Thanks @matthewp! - Prevents errors in templates from crashing the server
#10219 afcb9d331179287629b5ffce4020931258bebefa Thanks @matthewp! - Fix dynamic slots missing hydration scripts
#10220 1eadb1c5290f2f4baf538c34889a09d5fcfb9bd4 Thanks @Princesseuh! - Fixes some built-in apps of the dev toolbar not closing when clicking the page
#10154 e64bd0740b44aed5cfaf67e5c37a1c56ed4442f4 Thanks @Cherry! - Fixes an issue where config.vite.build.assetsInlineLimit could not be set as a function.
#10196 8fb32f390d40cfa12a82c0645928468d27218866 Thanks @lilnasy! - Fixes an issue where a warning about headers being accessed in static mode is unnecessarily shown when i18n is enabled.
#10199 6aa660ae7abc6841d7a3396b29f10b9fb7910ce5 Thanks @lilnasy! - Fixes an issue where prerendered pages had access to query params in dev mode.
#10195 903eace233033998811b72e27a54c80d8e59ff37 Thanks @1574242600! - Fix build failure caused by read-only files under /public (in the presence of client-side JS).
#10205 459f74bc71748279fe7dce0688f38bd74b51c5c1 Thanks @martrapp! - Adds an error message for non-string transition:name values
#10208 8cd38f02456640c063552aef00b2b8a216b3935d Thanks @log101! - Fixes custom headers are not added to the Node standalone server responses in preview mode
#10143 7c5fcd2fa817472f480bbfbbc11b9ed71a7210ab Thanks @bluwy! - Improves the default optimizeDeps.entries Vite config to avoid globbing server endpoints, and respect the srcDir option
#10197 c856c729404196900a7386c8426b81e79684a6a9 Thanks @Princesseuh! - Fixes errors being logged twice in some cases
#10166 598f30c7cd6c88558e3806d9bc5a15d426d83992 Thanks @bluwy! - Improves Astro style tag HMR when updating imported styles
#10194 3cc20109277813ccb9578ca87a8b0d680a73c35c Thanks @matthewp! - Fixes an issue related to content collections usage in browser context caused by csssec
a46249173edde66b03c19441144272baa8394fb4 Thanks @ematipico! - Fixes an issue with the i18n.routing types, where an internal transformation was causing the generation of incorrect types for integrations.#9795 5acc3135ba5309a566def466fbcbabd23f70cd68 Thanks @lilnasy! - Refactors internals relating to middleware, endpoints, and page rendering.
#10105 1f598b372410066c6fcd41cba9915f6aaf7befa8 Thanks @negativems! - Fixes an issue where some astro commands failed if the astro config file or an integration used the global crypto object.
#10165 d50dddb71d87ce5b7928920f10eb4946a5339f86 Thanks @ematipico! - Fixes an issue where the i18n.routing object had all its fields defined as mandatory. Now they all are optionals and shouldn’t break when using astro.config.mts.
#10132 1da9c5f2f3fe70b0206d1b3e0c01744fa40d511c Thanks @bluwy! - Simplifies internal Vite preview server teardown
#10163 b92d35f1026f3e99abb888d1a845bdda4efdc327 Thanks @mingjunlu! - Fixes an issue where audit fails to initialize when encountered <a> inside <svg>
#10079 80f8996514e6d0546e94bd927650cd4ab2f1fa2f Thanks @ktym4a! - Fix integrationData fetch to always be called even if View Transition is enabled.
#10139 3c73441eb2eaba767d6dad1b30c0353195d28791 Thanks @bluwy! - Fixes style-only change detection for Astro files if both the markup and styles are updated
#9614 d469bebd7b45b060dc41d82ab1cf18ee6de7e051 Thanks @matthewp! - Improves Node.js streaming performance.
This uses an AsyncIterable instead of a ReadableStream to do streaming in Node.js. This is a non-standard enhancement by Node, which is done only in that environment.
#10001 748b2e87cd44d8bcc1ab9d7e504703057e2000cd Thanks @bholmesdev! - Removes content collection warning when a configured collection does not have a matching directory name. This should resolve i18n collection warnings for Starlight users.
This also ensures configured collection names are always included in getCollection() and getEntry() types even when a matching directory is absent. We hope this allows users to discover typos during development by surfacing type information.
#10074 7443929381b47db0639c49a4d32aec4177bd9102 Thanks @Princesseuh! - Add a UI showing the list of found problems when using the audit app in the dev toolbar
#10099 b340f8fe3aaa81e38c4f1aa41498b159dc733d86 Thanks @martrapp! - Fixes a regression where view transition names containing special characters such as spaces or punctuation stopped working.
Regular use naming your transitions with transition: name is unaffected.
However, this fix may result in breaking changes if your project relies on the particular character encoding strategy Astro uses to translate transition:name directives into values of the underlying CSS view-transition-name property. For example, Welcome to Astro is now encoded as Welcome_20to_20Astro_2e.
This mainly affects spaces and punctuation marks but no Unicode characters with codes >= 128.
#9976 91f75afbc642b6e73dd4ec18a1fe2c3128c68132 Thanks @OliverSpeir! - Adds a new optional astro:assets image attribute inferSize for use with remote images.
Remote images can now have their dimensions inferred just like local images. Setting inferSize to true allows you to use getImage() and the <Image /> and <Picture /> components without setting the width and height properties.
---import { Image, Picture, getImage } from 'astro:assets';const myPic = await getImage({ src: 'https://example.com/example.png', inferSize: true });---
<Image src="https://example.com/example.png" inferSize alt="" /><Picture src="https://example.com/example.png" inferSize alt="" />Read more about using inferSize with remote images in our documentation.
#10015 6884b103c8314a43e926c6acdf947cbf812a21f4 Thanks @Princesseuh! - Adds initial support for performance audits to the dev toolbar
#10116 4bcc249a9f34aaac59658ca626c828bd6dbb8046 Thanks @lilnasy! - Fixes an issue where the dev server froze when typescript aliases were used.
#10096 227cd83a51bbd451dc223fd16f4cf1b87b8e44f8 Thanks @Fryuni! - Fixes regression on routing priority for multi-layer index pages
The sorting algorithm positions more specific routes before less specific routes, and considers index pages to be more specific than a dynamic route with a rest parameter inside of it.
This means that /blog is considered more specific than /blog/[...slug].
But this special case was being applied incorrectly to indexes, which could cause a problem in scenarios like the following:
//blog/blog/[...slug]The algorithm would make the following comparisons:
/ is more specific than /blog (incorrect)/blog/[...slug] is more specific than / (correct)/blog is more specific than /blog/[...slug] (correct)Although the incorrect first comparison is not a problem by itself, it could cause the algorithm to make the wrong decision.
Depending on the other routes in the project, the sorting could perform just the last two comparisons and by transitivity infer the inverse of the third (/blog/[...slug > / > /blog), which is incorrect.
Now the algorithm doesn’t have a special case for index pages and instead does the comparison soleley for rest parameter segments and their immediate parents, which is consistent with the transitivity property.
#10120 787e6f52470cf07fb50c865948b2bc8fe45a6d31 Thanks @bluwy! - Updates and supports Vite 5.1
#10096 227cd83a51bbd451dc223fd16f4cf1b87b8e44f8 Thanks @Fryuni! - Fixes edge case on i18n fallback routes
Previously index routes deeply nested in the default locale, like /some/nested/index.astro could be mistaked as the root index for the default locale, resulting in an incorrect redirect on /.
#10112 476b79a61165d0aac5e98459a4ec90762050a14b Thanks @Princesseuh! - Renames the home Astro Devoolbar App to astro:home
#10117 51b6ff7403c1223b1c399e88373075972c82c24c Thanks @hippotastic! - Fixes an issue where create astro, astro add and @astrojs/upgrade would fail due to unexpected package manager CLI output.
#9857 73bd900754365b006ee730df9f379ba924e5b3fa Thanks @iamyunsin! - Fixes false positives in the dev overlay audit when multiple role values exist.
#10075 71273edbb429b5afdba6f8ee14681b66e4c09ecc Thanks @lilnasy! - Improves error messages for island hydration.
#10072 8106178043050d142bf385bed2990730518f28e2 Thanks @lilnasy! - Clarifies error messages in endpoint routing.
#9971 d9266c4467ca0faa1213c1a5995164e5655ab375 Thanks @mingjunlu! - Fixes an issue where ReadableStream wasn’t canceled in dev mode
#10063 dac759798c111494e76affd2c2504d63944871fe Thanks @marwan-mohamed12! - Moves shikiji-core from devDependencies to dependencies to prevent type errors
#10067 989ea63bb2a5a670021541198aa70b8dc7c4bd2f Thanks @ematipico! - Fixes a regression in the astro:i18n module, where the functions getAbsoluteLocaleUrl and getAbsoluteLocaleUrlList returned a URL with double slash with a certain combination of options.
#10060 1810309e65c596266355c3b7bb36cdac70f3305e Thanks @lilnasy! - Fixes an issue where custom client directives added by integrations broke builds with a custom root.
#9991 8fb67c81bb84530b39df4a1449c0862def0854af Thanks @ktym4a! - Increases compatibility with standard browser behavior by changing where view transitions occur on browser back navigation.
#10022 3fc76efb2a8faa47edf67562a1f0c84a19be1b33 Thanks @lilnasy! - Fixes a regression where types for the astro:content module did not include required exports, leading to typescript errors.
#10016 037e4f12dd2f460d66f72c9f2d992b95e74d2da9 Thanks @ematipico! - Fixes a bug where routes with a name that start with the name of the i18n.defaultLocale were incorrectly returning a 404 response.
#10013 e6b5306a7de779ce495d0ff076d302de0aa57eaf Thanks @delucis! - Fixes a regression in content collection types
#10003 ce4283331f18c6178654dd705e3cf02efeef004a Thanks @bholmesdev! - Adds support for .strict() on content collection schemas when a custom slug is present.
#9998 18ac0940ea1b49b6b0ddd9be1f96aef416e2d7ee Thanks @ematipico! - Fixes a bug in Astro.currentLocale that wasn’t returning the correct locale when a locale is configured via path
#9998 18ac0940ea1b49b6b0ddd9be1f96aef416e2d7ee Thanks @ematipico! - Fixes a regression in Astro.currentLocale where it stopped working properly with dynamic routes
#9956 81acac24a3cac5a9143155c1d9f838ea84a70421 Thanks @matthewp! - Fixes HMR for MDX dependencies in Content Collections
#9999 c53a31321a935e4be04809046d7e0ba3cc41b272 Thanks @MoustaphaDev! - Rollbacks the feature which allowed to dynamically generate slots with variable slot names due to unexpected regressions.
#9906 3c0876cbed5033e6b5b42cc2b9d8b393d7e5a55e Thanks @florian-lefebvre! - Improves the types for the astro:content module by making low fidelity types available before running astro sync
#9932 9f0d89fa7e9e7c08c8600b0c49c2cce7489a7582 Thanks @ematipico! - Fixes a case where a warning was logged even when the feature i18nDomains wasn’t enabled
#9907 6c894af5ab79f290f4ff7feb68617a66e91febc1 Thanks @ktym4a! - Load 404.html on all non-existent paths on astro preview.
#9841 27ea080e24e2c5cdc59b63b1dfe0a83a0c696597 Thanks @kristianbinau! - Makes the warning clearer when having a custom base and requesting a public URL without it
#9888 9d2fdb293d6a7323e10126cebad18ef9a2ea2800 Thanks @natemoo-re! - Improves error handling logic for the astro sync command.
#9918 d52529e09450c84933dd15d6481edb32269f537b Thanks @LarryIVC! - Adds the name attribute to the <details> tag type
#9938 1568afb78a163db63a4cde146dec87785a83db1d Thanks @lilnasy! - Fixes a regression where middleware did not run for prerendered pages and endpoints.
#9931 44674418965d658733d3602668a9354e18f8ef89 Thanks @lilnasy! - Fixes a regression where a response created with Response.redirect or containing null as the body never completed in node-based adapters.
#9839 58f9e393a188702eef5329e41deff3dcb65a3230 Thanks @Princesseuh! - Adds a new ComponentProps type export from astro/types to get the props type of an Astro component.
---import type { ComponentProps } from 'astro/types';import { Button } from './Button.astro';
type myButtonProps = ComponentProps<typeof Button>;---#9159 7d937c158959e76443a02f740b10e251d14dbd8c Thanks @bluwy! - Adds CLI shortcuts as an easter egg for the dev server:
o + enter: opens the site in your browserq + enter: quits the dev serverh + enter: prints all available shortcuts#9764 fad4f64aa149086feda2d1f3a0b655767034f1a8 Thanks @matthewp! - Adds a new build.format configuration option: 'preserve'. This option will preserve your source structure in the final build.
The existing configuration options, file and directory, either build all of your HTML pages as files matching the route name (e.g. /about.html) or build all your files as index.html within a nested directory structure (e.g. /about/index.html), respectively. It was not previously possible to control the HTML file built on a per-file basis.
One limitation of build.format: 'file' is that it cannot create index.html files for any individual routes (other than the base path of /) while otherwise building named files. Creating explicit index pages within your file structure still generates a file named for the page route (e.g. src/pages/about/index.astro builds /about.html) when using the file configuration option.
Rather than make a breaking change to allow build.format: 'file' to be more flexible, we decided to create a new build.format: 'preserve'.
The new format will preserve how the filesystem is structured and make sure that is mirrored over to production. Using this option:
about.astro becomes about.htmlabout/index.astro becomes about/index.htmlSee the build.format configuration options reference for more details.
#9143 041fdd5c89920f7ccf944b095f29e451f78b0e28 Thanks @ematipico! - Adds experimental support for a new i18n domain routing option ("domains") that allows you to configure different domains for individual locales in entirely server-rendered projects.
To enable this in your project, first configure your server-rendered project’s i18n routing with your preferences if you have not already done so. Then, set the experimental.i18nDomains flag to true and add i18n.domains to map any of your supported locales to custom URLs:
//astro.config.mjs"import { defineConfig } from 'astro/config';export default defineConfig({ site: 'https://example.com', output: 'server', // required, with no prerendered pages adapter: node({ mode: 'standalone', }), i18n: { defaultLocale: 'en', locales: ['es', 'en', 'fr', 'ja'], routing: { prefixDefaultLocale: false, }, domains: { fr: 'https://fr.example.com', es: 'https://example.es', }, }, experimental: { i18nDomains: true, },});With "domains" configured, the URLs emitted by getAbsoluteLocaleUrl() and getAbsoluteLocaleUrlList() will use the options set in i18n.domains.
import { getAbsoluteLocaleUrl } from 'astro:i18n';
getAbsoluteLocaleUrl('en', 'about'); // will return "https://example.com/about"getAbsoluteLocaleUrl('fr', 'about'); // will return "https://fr.example.com/about"getAbsoluteLocaleUrl('es', 'about'); // will return "https://example.es/about"getAbsoluteLocaleUrl('ja', 'about'); // will return "https://example.com/ja/about"Similarly, your localized files will create routes at corresponding URLs:
/en/about.astro will be reachable at the URL https://example.com/about./fr/about.astro will be reachable at the URL https://fr.example.com/about./es/about.astro will be reachable at the URL https://example.es/about./ja/about.astro will be reachable at the URL https://example.com/ja/about.See our Internationalization Guide for more details and limitations on this experimental routing feature.
#9755 d4b886141bb342ac71b1c060e67d66ca2ffbb8bd Thanks @OliverSpeir! - Fixes an issue where images in Markdown required a relative specifier (e.g. ./)
Now, you can use the standard  syntax in Markdown files for images colocated in the same folder: no relative specifier required!
There is no need to update your project; your existing images will still continue to work. However, you may wish to remove any relative specifiers from these Markdown images as they are no longer necessary:
 <!-- This dog lives in the same folder as my article! -->#9908 2f6d1faa6f2d6de2d4ccd2a48adf5adadc82e593 Thanks @lilnasy! - Improves http behavior relating to errors encountered while streaming a response.
#9877 7be5f94dcfc73a78d0fb301eeff51614d987a165 Thanks @fabiankachlock! - Fixes the content config type path on windows
#9143 041fdd5c89920f7ccf944b095f29e451f78b0e28 Thanks @ematipico! - Fixes an issue where the function getLocaleRelativeUrlList wasn’t normalising the paths by default
#9911 aaedb848b1d6f683840035865528506a346ea659 Thanks @natemoo-re! - Fixes an issue where some adapters that do not include a start() export would error rather than silently proceed
#9884 37369550ab57ca529fd6c796e5b0e96e897ca6e5 Thanks @lilnasy! - Fixes an issue where multiple cookies were sent in a single Set-Cookie header in the dev mode.
#9876 e9027f194b939ac5a4d795ee1a2c24e4a6fbefc0 Thanks @friedemannsommer! - Fixes an issue where using Response.redirect in an endpoint led to an error.
#9882 13c3b712c7ba45d0081f459fc06f142216a4ec59 Thanks @natemoo-re! - Improves handling of YAML parsing errors
#9878 a40a0ff5883c7915dd55881dcebd052b9f94a0eb Thanks @lilnasy! - Fixes an issue where setting trailingSlash to “never” had no effect on Astro.url.
#9840 70fdf1a5c660057152c1ca111dcc89ceda5c8840 Thanks @delucis! - Expose ContentConfig type from astro:content
#9865 00ba9f1947ca9016cd0ee4d8f6048027fab2ab9a Thanks @ematipico! - Fixes a bug in Astro.currentLocale where the value was incorrectly computed during the build.
#9838 0a06d87a1e2b94be00a954f350c184222fa0594d Thanks @lilnasy! - Fixes an issue where astro:i18n could not be used in framework components.
Updated dependencies [44c957f893c6bf5f5b7c78301de7b21c5975584d]:
#9825 e4370e9e9dd862425eced25823c82e77d9516927 Thanks @tugrulates! - Fixes false positive aria role errors on interactive elements
#9828 a3df9d83ca92abb5f08f576631019c1604204bd9 Thanks @ematipico! - Fixes a case where shared modules among pages and middleware were transformed to a no-op after the build.
#9834 1885cea308a62b173a50967cf5a0b174b3c3f3f1 Thanks @Princesseuh! - Fixes third-party dev toolbar apps not loading correctly when using absolute paths on Windows
#9818 d688954c5adba75b0d676694fbf5fb0da1c0af13 Thanks @Princesseuh! - Improves the wording of a few confusing error messages
#9680 5d7db1dbb0ff06db98e08b0ca241ff09d0b8b44d Thanks @loucyx! - Fixes types generation from Content Collections config file
#9822 bd880e8437ea2df16f322f604865c1148a9fd4cf Thanks @liruifengv! - Applies the correct escaping to identifiers used with transition:name.
#9830 f3d22136e53fd902310024519fc4de83f0a58039 Thanks @lilnasy! - Fixes an issue where 404 responses from endpoints were replaced with contents of 404.astro in dev mode.
#9816 2a44c8f93201958fba2d1e83046eabcaef186b7c Thanks @Princesseuh! - Adds telemetry for when apps are toggled in the dev toolbar. This data is completely anonymous and only the names of built-in apps are shared with us. This data will help us monitor how much the dev toolbar is used and which apps are used more. For more information on how Astro collects telemetry, visit the following page: https://astro.build/telemetry/
#9807 b3f313138bb314e2b416c29cda507383c2a9f816 Thanks @bluwy! - Fixes environment variables replacement for export const prerender
#9790 267c5aa2c7706f0ea3447f20a09d85aa560866ad Thanks @lilnasy! - Refactors internals of the astro:i18n module to be more maintainable.
#9776 dc75180aa698b298264362bab7f00391af427798 Thanks @lilnasy! - Simplifies internals that handle middleware.
#9792 e22cb8b10c0ca9f6d88cab53cd2713f57875ab4b Thanks @tugrulates! - Accept aria role switch on toolbar audit.
#9606 e6945bcf23b6ad29388bbadaf5bb3cc31dd4a114 Thanks @eryue0220! - Fixes escaping behavior for .html files and components
#9786 5b29550996a7f5459a0d611feea6e51d44e1d8ed Thanks @Fryuni! - Fixes a regression in routing priority for index pages in rest parameter folders and dynamic sibling trees.
Considering the following tree:
src/pages/├── index.astro├── static.astro├── [dynamic_file].astro├── [...rest_file].astro├── blog/│ └── index.astro├── [dynamic_folder]/│ ├── index.astro│ ├── static.astro│ └── [...rest].astro└── [...rest_folder]/ ├── index.astro └── static.astroThe routes are sorted in this order:
/src/pages/index.astro/src/pages/blog/index.astro/src/pages/static.astro/src/pages/[dynamic_folder]/index.astro/src/pages/[dynamic_file].astro/src/pages/[dynamic_folder]/static.astro/src/pages/[dynamic_folder]/[...rest].astro/src/pages/[...rest_folder]/static.astro/src/pages/[...rest_folder]/index.astro/src/pages/[...rest_file]/index.astroThis allows for index files to be used as overrides to rest parameter routes on SSR when the rest parameter matching undefined is not desired.
#9775 075706f26d2e11e66ef8b52288d07e3c0fa97eb1 Thanks @lilnasy! - Simplifies internals that handle endpoints.
#9773 9aa7a5368c502ae488d3a173e732d81f3d000e98 Thanks @LunaticMuch! - Raises the required vite version to address a vulnerability in vite.server.fs.deny that affected the dev mode.
#9781 ccc05d54014e24c492ca5fddd4862f318aac8172 Thanks @stevenbenner! - Fix build failure when image file name includes special characters
eed0e8757c35dde549707e71c45862438a043fb0 Thanks @Princesseuh! - Fix apps being able to crash the dev toolbar in certain cases#9712 ea6cbd06a2580527786707ec735079ff9abd0ec0 Thanks @bluwy! - Improves HMR behavior for style-only changes in .astro files
#9739 3ecb3ef64326a8f77aa170df1e3c89cb5c12cc93 Thanks @ematipico! - Makes i18n redirects take the build.format configuration into account
#9762 1fba85681e86aa83d24336d4209cafbc76b37607 Thanks @ematipico! - Adds popovertarget" to the attribute that can be passed to the button` element
#9605 8ce40a417c854d9e6a4fa7d5a85d50a6436b4a3c Thanks @MoustaphaDev! - Adds support for dynamic slot names
#9381 9e01f9cc1efcfb938355829676d51b24818ab2bb Thanks @martrapp! - Improves the CLI output of astro preferences list to include additional relevant information
#9741 73d74402007896204ee965f6553dc83b3dec8d2f Thanks @taktran! - Fixes an issue where dot files were not copied over from the public folder to the output folder, when build command was run in a folder other than the root of the project.
#9730 8d2e5db096f1e7b098511b4fe9357434a6ff0703 Thanks @Blede2000! - Allow i18n routing utilities like getRelativeLocaleUrl to also get the default local path when redirectToDefaultLocale is false
Updated dependencies [53c69dcc82cdf4000aff13a6c11fffe19096cf45, 2f81cffa9da9db0e2802d303f94feaee8d2f54ec, a505190933365268d48139a5f197a3cfb5570870]:
a4b696def3a7eb18c1ae48b10fd3758a1874b6fe Thanks @Fryuni! - Fixes a regression in routing priority between index.astro and dynamic routes with rest parameters
#9566 165cfc154be477337037185c32b308616d1ed6fa Thanks @OliverSpeir! - Allows remark plugins to pass options specifying how images in .md files will be optimized
#9661 d6edc7540864cf5d294d7b881eb886a3804f6d05 Thanks @ematipico! - Adds new helper functions for adapter developers.
Astro.clientAddress can now be passed directly to the app.render() method.const response = await app.render(request, { clientAddress: '012.123.23.3' });Request and Response objects are now provided as static methods on the NodeApp class.http.createServer((nodeReq, nodeRes) => { const request: Request = NodeApp.createRequest(nodeReq); const response = await app.render(request); await NodeApp.writeResponse(response, nodeRes);});Astro.cookies.set() can now be automatically added to the Response object by passing the addCookieHeader option to app.render().const response = await app.render(request)const setCookieHeaders: Array<string> = Array.from(app.setCookieHeaders(webResponse));
if (setCookieHeaders.length) { for (const setCookieHeader of setCookieHeaders) { headers.append('set-cookie', setCookieHeader); }}const response = await app.render(request, { addCookieHeader: true })#9638 f1a61268061b8834f39a9b38bca043ae41caed04 Thanks @ematipico! - Adds a new i18n.routing config option redirectToDefaultLocale to disable automatic redirects of the root URL (/) to the default locale when prefixDefaultLocale: true is set.
In projects where every route, including the default locale, is prefixed with /[locale]/ path, this property allows you to control whether or not src/pages/index.astro should automatically redirect your site visitors from / to /[defaultLocale].
You can now opt out of this automatic redirection by setting redirectToDefaultLocale: false:
export default defineConfig({ i18n: { defaultLocale: 'en', locales: ['en', 'fr'], routing: { prefixDefaultLocale: true, redirectToDefaultLocale: false, }, },});#9671 8521ff77fbf7e867701cc30d18253856914dbd1b Thanks @bholmesdev! - Removes the requirement for non-content files and assets inside content collections to be prefixed with an underscore. For files with extensions like .astro or .css, you can now remove underscores without seeing a warning in the terminal.
src/content/blog/post.mdx _styles.css _Component.astro styles.css Component.astroContinue to use underscores in your content collections to exclude individual content files, such as drafts, from the build output.
#9567 3a4d5ec8001ebf95c917fdc0d186d29650533d93 Thanks @OliverSpeir! - Improves the a11y-missing-content rule and error message for audit feature of dev-overlay. This also fixes an error where this check was falsely reporting accessibility errors.
#9643 e9a72d9a91a3741566866bcaab11172cb0dc7d31 Thanks @blackmann! - Adds a new markdown.shikiConfig.transformers config option. You can use this option to transform the Shikiji hast (AST format of the generated HTML) to customize the final HTML. Also updates Shikiji to the latest stable version.
See Shikiji’s documentation for more details about creating your own custom transformers, and a list of common transformers you can add directly to your project.
#9644 a5f1682347e602330246129d4666a9227374c832 Thanks @rossrobino! - Adds an experimental flag clientPrerender to prerender your prefetched pages on the client with the Speculation Rules API.
{ prefetch: { prefetchAll: true, defaultStrategy: 'viewport', }, experimental: { clientPrerender: true, },}Enabling this feature overrides the default prefetch behavior globally to prerender links on the client according to your prefetch configuration. Instead of appending a <link> tag to the head of the document or fetching the page with JavaScript, a <script> tag will be appended with the corresponding speculation rules.
Client side prerendering requires browser support. If the Speculation Rules API is not supported, prefetch will fallback to the supported strategy.
See the Prefetch Guide for more prefetch options and usage.
#9439 fd17f4a40b83d14350dce691aeb79d87e8fcaf40 Thanks @Fryuni! - Adds an experimental flag globalRoutePriority to prioritize redirects and injected routes equally alongside file-based project routes, following the same route priority order rules for all routes.
export default defineConfig({ experimental: { globalRoutePriority: true, },});Enabling this feature ensures that all routes in your project follow the same, predictable route priority order rules. In particular, this avoids an issue where redirects or injected routes (e.g. from an integration) would always take precedence over local route definitions, making it impossible to override some routes locally.
The following table shows which route builds certain page URLs when file-based routes, injected routes, and redirects are combined as shown below:
/blog/post/[pid]/[page]/blog/[...slug]/blog/tags/[tag] -> /[tag]/posts -> /blogURLs are handled by the following routes:
| Page | Current Behavior | Global Routing Priority Behavior |
|---|---|---|
/blog/tags/astro | Injected route /blog/[...slug] | Redirect to /tags/[tag] |
/blog/post/0 | Injected route /blog/[...slug] | File-based route /blog/post/[pid] |
/posts | File-based route /[page] | Redirect to /blog |
In the event of route collisions, where two routes of equal route priority attempt to build the same URL, Astro will log a warning identifying the conflicting routes.
#9719 7e1db8b4ce2da9e044ea0393e533c6db2561ac90 Thanks @bluwy! - Refactors Vite config to avoid Vite 5.1 warnings
#9439 fd17f4a40b83d14350dce691aeb79d87e8fcaf40 Thanks @Fryuni! - Updates Astro’s routing priority rules to prioritize the most specifically-defined routes.
Now, routes with more defined path segments will take precedence over less specific routes.
For example, /blog/posts/[pid].astro (3 path segments) takes precedence over /blog/[...slug].astro (2 path segments). This means that:
/pages/blog/posts/[id].astro will build routes of the form /blog/posts/1 and /blog/posts/a/pages/blog/[...slug].astro will build routes of a variety of forms, including blog/1 and /blog/posts/1/a, but will not build either of the previous routes.For a complete list of Astro’s routing priority rules, please see the routing guide. This should not be a breaking change, but you may wish to inspect your built routes to ensure that your project is unaffected.
#9706 1539e04a8e5865027b3a8718c6f142885e7c8d88 Thanks @bluwy! - Simplifies HMR handling, improves circular dependency invalidation, and fixes Astro styles invalidation
Updated dependencies [165cfc154be477337037185c32b308616d1ed6fa, e9a72d9a91a3741566866bcaab11172cb0dc7d31]:
#9665 d02a3c48a3ce204649d22e17b1e26fb5a6a60bcf Thanks @bluwy! - Disables internal file watcher for one-off Vite servers to improve start-up performance
#9664 1bf0ddd2777ae5f9fde3fd854a9e75aa56c080f2 Thanks @bluwy! - Improves HMR for Astro style and script modules
#9668 74008cc23853ed507b144efab02300202c5386ed Thanks @Princesseuh! - Fix the passthrough image service not generating srcset values properly
#9693 d38b2a4fe827e956662fcf457d1f1f84832c2f15 Thanks @kidylee! - Disables View Transition form handling when the action property points to an external URL
#9678 091097e60ef38dadb87d7c8c1fc9cb939a248921 Thanks @ematipico! - Adds an error during the build phase in case i18n.routing.prefixDefaultLocale is set to true and the index page is missing.
#9659 39050c6e1f77dc21e87716d95e627a654828ee74 Thanks @Princesseuh! - Fix Astro wrongfully deleting certain images imported with ?url when used in tandem with astro:assets
#9685 35d54b3ddb3310ab4c505d49bd4937b2d25e4078 Thanks @lilnasy! - Fixes an issue where anchor elements within a custom component could not trigger a view transition.
#9642 cdb7bfa66260afc79b829b617492a01a709a86ef Thanks @martrapp! - Fixes an issue where View Transitions did not work when navigating to the 404 page
#9637 5cba637c4ec39c06794146b0c7fd3225d26dcabb Thanks @bluwy! - Improves environment variables replacement in SSR
#9658 a3b5695176cd0280438938c1d6caef478a571415 Thanks @martrapp! - Fixes an issue caused by trying to load text/partytown scripts during view transitions
#9657 a4f90d95ff97abe59f2a1ef0956cab257ae36838 Thanks @ematipico! - Fixes a bug where the custom status code wasn’t correctly computed in the dev server
#9627 a700a20291e19cde23705e8e661e833aec7d3095 Thanks @lilnasy! - Adds a warning when setting cookies will have no effect
#9652 e72efd6a9a1e2a70488fd225529617ffd8418534 Thanks @bluwy! - Improves environment variables handling by using esbuild to perform replacements
#9560 8b9c4844f7b302380835154fab1c3489979fc07d Thanks @bluwy! - Fixes tsconfig alias with import.meta.glob
#9653 50f39183cfec4a4522c1f935d710e5d9b724993b Thanks @Princesseuh! - Pin Sharp to 0.32.6 until we can raise our semver requirements. To use the latest version of Sharp, you can add it to your project’s dependencies.
#9618 401fd3e8c8957a3bed6469a622cd67b157ca303f Thanks @ldh3907! - Adds a second generic parameter to APIRoute to type the params
#9600 47b951b3888a5a8a708d2f9b974f12fba7ec9ed3 Thanks @jacobdalamb! - Improves tailwind config file detection when adding the tailwind integration using astro add tailwind
Tailwind config file ending in .ts, .mts or .cts will now be used instead of creating a new tailwind.config.mjs when the tailwind integration is added using astro add tailwind.
#9622 5156c740506cbf6ec85c95e1663c14cbd438d75b Thanks @bluwy! - Fixes the Sharp image service limitInputPixels option type
#9513 e44f6acf99195a3f29b8390fd9b2c06410551b74 Thanks @wtto00! - Adds a 'load' prefetch strategy to prefetch links on page load
#9377 fe719e27a84c09e46b515252690678c174a25759 Thanks @bluwy! - Adds “Missing ARIA roles check” and “Unsupported ARIA roles check” audit rules for the dev toolbar
#9573 2a8b9c56b9c6918531c57ec38b89474571331aee Thanks @bluwy! - Allows passing a string to --open and server.open to open a specific URL on startup in development
#9544 b8a6fa8917ff7babd35dafb3d3dcd9a58cee836d Thanks @bluwy! - Adds a helpful error for static sites when you use the astro preview command if you have not previously run astro build.
#9546 08402ad5846c73b6887e74ed4575fd71a3e3c73d Thanks @bluwy! - Adds an option for the Sharp image service to allow large images to be processed. Set limitInputPixels: false to bypass the default image size limit:
import { defineConfig } from 'astro/config';
export default defineConfig({ image: { service: { entrypoint: 'astro/assets/services/sharp', config: { limitInputPixels: false, }, }, },});#9596 fbc26976533bbcf2de9d6dba1aa3ea3dc6ce0853 Thanks @Princesseuh! - Adds the ability to set a rootMargin setting when using the client:visible directive. This allows a component to be hydrated when it is near the viewport, rather than hydrated when it has entered the viewport.
<!-- Load component when it's within 200px away from entering the viewport --><Component client:visible={{ rootMargin: '200px' }} />#9063 f33fe3190b482a42ebc68cc5275fd7f2c49102e6 Thanks @alex-sherwin! - Cookie encoding / decoding can now be customized
Adds new encode and decode functions to allow customizing how cookies are encoded and decoded. For example, you can bypass the default encoding via encodeURIComponent when adding a URL as part of a cookie:
---import { encodeCookieValue } from './cookies';Astro.cookies.set('url', Astro.url.toString(), { // Override the default encoding so that URI components are not encoded encode: (value) => encodeCookieValue(value),});---Later, you can decode the URL in the same way:
---import { decodeCookieValue } from './cookies';const url = Astro.cookies.get('url', { decode: (value) => decodeCookieValue(value),});---#9593 3b4e629ac8c2fdb4b491bf01abc7794e2e100173 Thanks @bluwy! - Improves astro add error reporting when the dependencies fail to install
#9563 d48ab90fb41fbc0589cd2df711682a41382c03aa Thanks @martrapp! - Fixes back navigation to fragment links (e.g. #about) in Firefox when using view transitions
Co-authored-by: Florian Lefebvre 69633530+florian-lefebvre@users.noreply.github.com Co-authored-by: Sarah Rainsberger sarah@rainsberger.ca
#9597 9fd24a546c45d48451da46637c14e7ed54dac76a Thanks @lilnasy! - Fixes an issue where configuring trailingSlash had no effect on API routes.
#9586 82bad5d6205672ed3f6a49d4de53d3a68367433e Thanks @martrapp! - Fixes page titles in the browser’s drop-down for back / forward navigation when using view transitions
#9575 ab6049bd58e4d02f47d500f9db08a865bc7f09b8 Thanks @bluwy! - Sets correct process.env.NODE_ENV default when using the JS API
#9587 da307e4a080483f8763f1919a05fa2194bb14e22 Thanks @jjenzz! - Adds a CSSProperties interface that allows extending the style attribute
#9513 e44f6acf99195a3f29b8390fd9b2c06410551b74 Thanks @wtto00! - Ignores 3g in slow connection detection. Only 2g and slow-2g are considered slow connections.
#9571 ec71f03cfd9b8195fb21c92dfda0eff63b6ebeed Thanks @bluwy! - Removes telemetry for unhandled errors in the dev server
#9548 8049f0cd91b239c52e37d571e3ba3e703cf0e4cf Thanks @bluwy! - Fixes error overlay display on URI malformed error
#9504 8cc3d6aa46f438d668516539c34b48ad748ade39 Thanks @matiboux! - Implement i18n’s getLocaleByPath function
#9547 22f42d11a4fd2e154a0c5873c4f516584e383b70 Thanks @bluwy! - Prevents ANSI codes from rendering in the error overlay
#9446 ede3f7fef6b43a08c9371f7a2531e2eef858b94d Thanks @alexnguyennz! - Toggle dev toolbar hitbox height when toolbar is visible
#9572 9f6453cf4972ac28eec4f07a1373feaa295c8864 Thanks @bluwy! - Documents supported --host and --port flags in astro preview --help
#9540 7f212f0831d8cd899a86fb94899a7cad8ec280db Thanks @matthewp! - Fixes remote images with encoded characters
#9559 8b873bf1f343efc1f486d8ef53c38380e2373c08 Thanks @sygint! - Adds ‘starlight’ to the displayed options for astro add
#9537 16e61fcacb98e6bd948ac240bc082659d70193a4 Thanks @walter9388! - <Image /> srcset now parses encoded paths correctly
#9522 bb1438d20d325acd15f3755c6e306e45a7c64bcd Thanks @Zegnat! - Add support for autocomplete attribute to the HTML button type.
#9531 662f06fd9fae377bed1aaa49adbba3542cced087 Thanks @bluwy! - Fixes duplicated CSS modules content when it’s imported by both Astro files and framework components
#9501 eb36e95596fcdb3db4a31744e910495e22e3af84 Thanks @Princesseuh! - Export JSX namespace from astro/jsx-runtime for language tooling to consume
#9492 89a2a07c2e411cda32244b7b05d3c79e93f7dd84 Thanks @lilnasy! - Improves error message for the case where two similarly named files result in the same content entry.
#9532 7224809b73d2c3ec8e8aee2fa07463dc3b57a7a2 Thanks @bluwy! - Prevents unnecessary URI decoding when rendering a route
#9478 dfef925e1fd07f3efb9fde6f4f23548f2af7dc75 Thanks @lilnasy! - Improves errors in certain places to also report their causes.
#9463 3b0eaed3b544ef8c4ec1f7b0d5a8f475bcfeb25e Thanks @Princesseuh! - Update Sharp version to ^0.33.1
#9512 1469e0e5a915e6b42b9953dbb48fe57a74518056 Thanks @mingjunlu! - Prevents dev toolbar tooltip from overflowing outside of the screen
#9497 7f7a7f1aeaec6b327ae0e5e7470a4f46174bf8ae Thanks @lilnasy! - Adds a helpful warning message for when an exported API Route is not uppercase.
#9452 e83b5095f Thanks @florian-lefebvre! - Upgrades vite to latest
#9352 f515b1421 Thanks @tmcw! - Add a more descriptive error message when image conversion fails
#9486 f6714f677 Thanks @martrapp! - Fixes View Transition’s form submission prevention, allowing preventDefault to be used.
#9461 429be8cc3 Thanks @Skn0tt! - update import created for astro create netlify
#9464 faf6c7e11 Thanks @Fryuni! - Fixes an edge case with view transitions where some spec-compliant Content-Type headers would cause a valid HTML response to be ignored.
#9400 1e984389b Thanks @bluwy! - Fixes importing dev toolbar apps from integrations on Windows
#9487 19169db1f Thanks @ematipico! - Improves logging of the generated pages during the build
#9460 047d285be Thanks @Princesseuh! - Fix Astro failing to build on certain exotic platform that reports their CPU count incorrectly
#9466 5062d27a1 Thanks @knpwrs! - Updates view transitions form handling with logic for the enctype attribute
#9458 fa3078ce9 Thanks @ematipico! - Correctly handle the error in case the middleware throws a runtime error
#9089 5ae657882 Thanks @lilnasy! - Fixes an issue where redirects did not replace slugs when the target of the redirect rule was not a verbatim route in the project.
#9483 c384f6924 Thanks @Princesseuh! - Fix some false positive in the audit logic of the dev toolbar
#9437 354a62c86 Thanks @dkobierski! - Fixes incorrect hoisted script paths when custom rollup output file names are configured
#9475 7ae4928f3 Thanks @ematipico! - Remove the manifest from the generated files in the dist/ folder.
#9419 151bd429b Thanks @matthewp! - Prevent Partytown from hijacking history APIs
#9426 c01cc4e34 Thanks @alexnguyennz! - Fixes warning for external URL redirects
#9445 f963d07f2 Thanks @natemoo-re! - Upgrades Astro’s compiler to a crash when sourcemaps try to map multibyte characters
#9126 6d2d0e279 Thanks @lilnasy! - Fixes an issue where error pages were not shown when trailingSlash was set to “always”.
#9434 c01580a2c Thanks @ematipico! - Improves the error message when a middleware doesn’t return a Response
#9433 fcc2fd5b0 Thanks @ematipico! - Correctly merge headers from the original response when an error page is rendered
#9423 bda1d294f Thanks @matthewp! - Error when getImage is passed an undefined src
#9424 e1a5a2d36 Thanks @matthewp! - Prevents dev server from crashing on unhandled rejections, and adds a helpful error message
#9404 8aa17a64b Thanks @Princesseuh! - Fixed some newer HTML attributes not being included in our type definitions
#9414 bebf38c0c Thanks @Skn0tt! - Adds the feature name to logs about feature deprecation / experimental status.
#9418 2c168af67 Thanks @alexnguyennz! - Fix broken link in CI instructions
#9407 546d92c86 Thanks @matthewp! - Allows file URLs as import specifiers
#9380 ea0918259 Thanks @ematipico! - Correctly handle the rendering of i18n routes when output: "hybrid" is set
#9374 65ddb0271 Thanks @bluwy! - Fixes an issue where prerendered route paths that end with .mjs were removed from the final build
#9375 26f7023d6 Thanks @bluwy! - Prettifies generated route names injected by integrations
#9387 a7c75b333 Thanks @natemoo-re! - Fixes an edge case with astro add that could install a prerelease instead of a stable release version.
Prior to this change
astro add svelte installs svelte@5.0.0-next.22
After this change
astro add svelte installs svelte@4.2.8
Updated dependencies [270c6cc27]:
#9342 eb942942d Thanks @Princesseuh! - Fix missing is:inline type for the <slot /> element
#9343 ab0281aee Thanks @martrapp! - Adds source file properties to HTML elements only if devToolbar is enabled
#9336 c76901065 Thanks @FredKSchott! - dev: fix issue where 404 and 500 responses were logged as 200
#9339 0bb3d5322 Thanks @morinokami! - Fixed the log message to correctly display ‘enabled’ and ‘disabled’ when toggling ‘Disable notifications’ in the Toolbar.
#9331 cfb20550d Thanks @natemoo-re! - Updates an internal dependency (vitefu) to avoid a common peerDependency warning
#9327 3878a91be Thanks @doseofted! - Fixes an edge case for <form method="dialog"> when using View Transitions. Forms with method="dialog" no longer require an additional data-astro-reload attribute.
631e5d01b Thanks @ematipico! - Fixes an issue where logs that weren’t grouped together by route when building the app.
#9138 abf601233 Thanks @bluwy! - Updates the unified, remark, and rehype dependencies to latest. Make sure to update your custom remark and rehype plugins as well to be compatible with the latest versions.
Potentially breaking change: The default value of markdown.remarkRehype.footnoteBackLabel is changed from "Back to content" to "Back to reference 1". See the mdast-util-to-hast commit for more information.
#9181 cdabf6ef0 Thanks @bluwy! - Removes support for returning simple objects from endpoints (deprecated since Astro 3.0). You should return a Response instead.
ResponseWithEncoding is also removed. You can refactor the code to return a response with an array buffer instead, which is encoding agnostic.
The types for middlewares have also been revised. To type a middleware function, you should now use MiddlewareHandler instead of MiddlewareResponseHandler. If you used defineMiddleware() to type the function, no changes are needed.
#9263 3cbd8ea75 Thanks @bluwy! - Removes additional deprecated APIs:
astro/client-image type. You should use the astro/client type instead.rss support in getStaticPaths. You should use @astrojs/rss instead.Astro.request.params support. You should use Astro.params instead.#9271 47604bd5b Thanks @matthewp! - Renames Dev Overlay to Dev Toolbar
The previously named experimental Dev Overlay is now known as the Astro Dev Toolbar. Overlay plugins have been renamed as Toolbar Apps. All APIs have been updated to reflect this name change.
To not break existing APIs, aliases for the Toolbar-based names have been created. The previous API names will continue to function but will be deprecated in the future. All documentation has been updated to reflect Toolbar-based names.
#9122 1c48ed286 Thanks @bluwy! - Adds Vite 5 support. There are no breaking changes from Astro. Check the Vite migration guide for details of the breaking changes from Vite instead.
#9225 c421a3d17 Thanks @natemoo-re! - Removes the opt-in handleForms property for <ViewTransitions />. Form submissions are now handled by default and this property is no longer necessary. This default behavior can be disabled by setting data-astro-reload on relevant <form /> elements.
#9196 37697a2c5 Thanks @bluwy! - Removes support for Shiki custom language’s path property. The language JSON file should be imported and passed to the option instead.
import customLang from './custom.tmLanguage.json'
export default defineConfig({ markdown: { shikiConfig: { langs: [ { path: './custom.tmLanguage.json' }, customLang, ], }, },})#9199 49aa215a0 Thanks @lilnasy! - This change only affects maintainers of third-party adapters. In the Integration API, the app.render() method of the App class has been simplified.
Instead of two optional arguments, it now takes a single optional argument that is an object with two optional properties: routeData and locals.
app.render(request)
app.render(request, routeData) app.render(request, { routeData })
app.render(request, routeData, locals) app.render(request, { routeData, locals })
app.render(request, undefined, locals) app.render(request, { locals })The current signature is deprecated but will continue to function until next major version.
#9212 c0383ea0c Thanks @alexanderniebuhr! - Removes deprecated app.match() option, matchNotFound
#9168 153a5abb9 Thanks @bluwy! - Removes deprecated features from Astro 3.0
supportedAstroFeatures to specify a list of features they support.build.split and build.excludeMiddleware options are removed. Use functionPerRoute and edgeMiddleware from adapters instead.markdown.drafts option and draft feature is removed. Use content collections instead.getHeaders() exported from markdown files is removed. Use getHeadings() instead.#9105 6201bbe96 Thanks @FredKSchott! - Update CLI logging experience
#9200 b4b851f5a Thanks @ematipico! - Adds a new way to configure the i18n.locales array.
Developers can now assign a custom URL path prefix that can span multiple language codes:
export default defineConfig({ experimental: { i18n: { defaultLocale: 'english', locales: ['de', { path: 'english', codes: ['en', 'en-US'] }, 'fr'], }, },});With the above configuration, the URL prefix of the default locale will be /english/. When computing Astro.preferredLocale, Astro will use the codes.
#9115 3b77889b4 Thanks @natemoo-re! - Adds the astro preferences command to manage user preferences. User preferences are specific to individual Astro users, unlike the astro.config.mjs file which changes behavior for everyone working on a project.
User preferences are scoped to the current project by default, stored in a local .astro/settings.json file. Using the --global flag, user preferences can also be applied to every Astro project on the current machine. Global user preferences are stored in an operating system-specific location.
# Disable the dev overlay for the current user in the current projectnpm run astro preferences disable devOverlay# Disable the dev overlay for the current user in all Astro projects on this machinenpm run astro preferences --global disable devOverlay
# Check if the dev overlay is enabled for the current usernpm run astro preferences list devOverlay#9139 459b26436 Thanks @bluwy! - Reworks Vite’s logger to use Astro’s logger to correctly log HMR messages
#9279 6a9669b81 Thanks @martrapp! - Improves consistency between navigations with and without <ViewTransitions>. See #9279 for more details.
#9161 bd0c2e9ae Thanks @bluwy! - Renames the entryPoint property of the injectRoute integrations API to entrypoint for consistency. A warning will be shown prompting you to update your code when using the old name.
#9129 8bfc20511 Thanks @FredKSchott! - Update error log formatting
#9118 000e8f465 Thanks @Princesseuh! - Redesign Dev Overlay main screen to show more information, such as the coolest integrations, your current Astro version and more.
#9118 000e8f465 Thanks @Princesseuh! - Fixes an issue where links with the same pathname as the current page, but different search params, were not prefetched.
#9275 0968cb1a3 Thanks @lilnasy! - Fixes an issue where html annotations relevant only to the dev server were included in the production build.
#9252 7b74ec4ba Thanks @ematipico! - Consistently emit fallback routes in the correct folders, and emit routes that consider trailingSlash
#9222 279e3c1b3 Thanks @matthewp! - Ensure the dev-overlay-window is anchored to the bottom
#9292 5428b3da0 Thanks @natemoo-re! - Improves display for astro preferences list command
#9235 9c2342c32 Thanks @Princesseuh! - Fix SVG icons not showing properly in the extended dropdown menu of the dev overlay
#9218 f4401c8c1 Thanks @matthewp! - Improve high contrast mode with the Dev Overlay
#9254 b750a161e Thanks @matthewp! - Improve highlight/tooltip positioning when in fixed positions
#9230 60cfa49e4 Thanks @FredKSchott! - Update the look and feel of the dev overlay
#9248 43ddb5217 Thanks @martrapp! - Adds properties of the submit button (name, value) to the form data of a view transition
#9170 8a228fce0 Thanks @natemoo-re! - Adds new accessibility audits to the Dev Toolbar’s built-in Audits app.
The audits Astro performs are non-exhaustive and only capable of detecting a handful of common accessibility issues. Please take care to perform a thorough, manual audit of your site to ensure compliance with the Web Content Accessibility Guidelines (WCAG) international standard before publishing your site.
🧡 Huge thanks to the Svelte team for providing the basis of these accessibility audits!
#9149 0fe3a7ed5 Thanks @bluwy! - Removes vendored Vite’s importMeta.d.ts file in favour of Vite 5’s new vite/types/import-meta.d.ts export
#9295 3d2dbb0e5 Thanks @matthewp! - Remove aria-query package
This is another CJS-only package that breaks usage.
#9274 feaba2c7f Thanks @TheOtterlord! - Fix routing prefixes when prefixDefaultLocale is true
#9273 9887f2412 Thanks @alexanderniebuhr! - Exports type for Dev Toolbar App under correct name
#9150 710be505c Thanks @bluwy! - Refactors virtual modules exports. This should not break your project unless you import Astro’s internal modules, including:
astro/middleware/namespaceastro/transitionsastro/transitions/routerastro/transitions/eventsastro/transitions/typesastro/prefetchastro/i18n#9227 4b8a42406 Thanks @matthewp! - Ensure overlay x-ray z-index is higher than the island
#9255 9ea3e0b94 Thanks @matthewp! - Adds instructions on how to hide the dev overlay
#9293 cf5fa4376 Thanks @matthewp! - Removes the ‘a11y-role-has-required-aria-props’ audit rule
This audit rule depends on a CommonJS module. To prevent blocking the 4.0 release the rule is being removed temporarily.
#9214 4fe523b00 Thanks @Princesseuh! - Fixes a number of small user experience bugs with the dev overlay
#9013 ff8eadb95 Thanks @bayssmekanique! - Returns the updated config in the integration astro:config:setup hook’s updateConfig() API
Updated dependencies [abf601233, addb57c8e, c7953645e]:
#9275 0968cb1a3 Thanks @lilnasy! - Fixes an issue where html annotations relevant only to the dev server were included in the production build.
#9292 5428b3da0 Thanks @natemoo-re! - Improves display for astro preferences list command
#9293 cf5fa4376 Thanks @matthewp! - Removes the ‘a11y-role-has-required-aria-props’ audit rule
This audit rule depends on a CommonJS module. To prevent blocking the 4.0 release the rule is being removed temporarily.
6a9669b81 Thanks @martrapp! - Improves consistency between navigations with and without <ViewTransitions>. See #9279 for more details.#9170 8a228fce0 Thanks @natemoo-re! - Adds new accessibility audits to the Dev Toolbar’s built-in Audits app.
The audits Astro performs are non-exhaustive and only capable of detecting a handful of common accessibility issues. Please take care to perform a thorough, manual audit of your site to ensure compliance with the Web Content Accessibility Guidelines (WCAG) international standard before publishing your site.
🧡 Huge thanks to the Svelte team for providing the basis of these accessibility audits!
#9274 feaba2c7f Thanks @TheOtterlord! - Fix routing prefixes when prefixDefaultLocale is true
#9273 9887f2412 Thanks @alexanderniebuhr! - Exports type for Dev Toolbar App under correct name
#9271 47604bd5b Thanks @matthewp! - Renames Dev Overlay to Dev Toolbar
The previously named experimental Dev Overlay is now known as the Astro Dev Toolbar. Plugins have been renamed as Toolbar Apps. This updates our references to reflect.
To not break existing APIs, aliases for the Toolbar-based names have been created. The previous API names will continue to function but will be deprecated in the future. All documentation has been updated to reflect Toolbar-based names.
#9263 3cbd8ea75 Thanks @bluwy! - Removes additional deprecated APIs:
astro/client-image type. You should use the astro/client type instead.rss support in getStaticPaths. You should use @astrojs/rss instead.Astro.request.params support. You should use Astro.params instead.#9200 b4b851f5a Thanks @ematipico! - Adds a new way to configure the i18n.locales array.
Developers can now assign a custom URL path prefix that can span multiple language codes:
export default defineConfig({ experimental: { i18n: { defaultLocale: 'english', locales: ['de', { path: 'english', codes: ['en', 'en-US'] }, 'fr'], routingStrategy: 'prefix-always', }, },});With the above configuration, the URL prefix of the default locale will be /english/. When computing Astro.preferredLocale, Astro will use the codes.
#9139 459b26436 Thanks @bluwy! - Reworks Vite’s logger to use Astro’s logger to correctly log HMR messages
#9252 7b74ec4ba Thanks @ematipico! - Consistently emit fallback routes in the correct folders, and emit routes that
consider trailingSlash
#9235 9c2342c32 Thanks @Princesseuh! - Fix SVG icons not showing properly in the extended dropdown menu of the dev overlay
#9254 b750a161e Thanks @matthewp! - Improve highlight/tooltip positioning when in fixed positions
#9230 60cfa49e4 Thanks @FredKSchott! - Update the look and feel of the dev overlay
#9248 43ddb5217 Thanks @martrapp! - Adds properties of the submit button (name, value) to the form data of a view transition
#9255 9ea3e0b94 Thanks @matthewp! - Adds instructions on how to hide the dev overlay
#9013 ff8eadb95 Thanks @bayssmekanique! - Returns the updated config in the integration astro:config:setup hook’s updateConfig() API
#9226 8f8a40e93 Thanks @outofambit! - Fix i18n fallback routing with routing strategy of always-prefix
#9179 3f28336d9 Thanks @lilnasy! - Fixes an issue where the presence of a slot in a page led to an error.
#9219 067a65f5b Thanks @natemoo-re! - Fix edge case where <style> updates inside of .astro files would ocassionally fail to update without reloading the page.
#9236 27d3e86e4 Thanks @ematipico! - The configuration i18n.routingStrategy has been replaced with an object called routing.
export default defineConfig({ experimental: { i18n: { routingStrategy: "prefix-always", routing: { prefixDefaultLocale: true, } } }})export default defineConfig({ experimental: { i18n: { routingStrategy: "prefix-other-locales", routing: { prefixDefaultLocale: false, } } }})#9225 c421a3d17 Thanks @natemoo-re! - Removes the opt-in handleForms property for <ViewTransitions />. Form submissions are now handled by default and can be disabled by setting data-astro-reload on relevant <form /> elements.
#9199 49aa215a0 Thanks @lilnasy! - This change only affects maintainers of third-party adapters. In the Integration API, the app.render() method of the App class has been simplified.
Instead of two optional arguments, it now takes a single optional argument that is an object with two optional properties: routeData and locals.
app.render(request)
app.render(request, routeData) app.render(request, { routeData })
app.render(request, routeData, locals) app.render(request, { routeData, locals })
app.render(request, undefined, locals) app.render(request, { locals })The current signature is deprecated but will continue to function until next major version.
#9212 c0383ea0c Thanks @alexanderniebuhr! - Removes deprecated app.match() option, matchNotFound
#9115 3b77889b4 Thanks @natemoo-re! - Adds the astro preferences command to manage user preferences. User preferences are specific to individual Astro users, unlike the astro.config.mjs file which changes behavior for everyone working on a project.
User preferences are scoped to the current project by default, stored in a local .astro/settings.json file. Using the --global flag, user preferences can also be applied to every Astro project on the current machine. Global user preferences are stored in an operating system-specific location.
# Disable the dev overlay for the current user in the current projectnpm run astro preferences disable devOverlay# Disable the dev overlay for the current user in all Astro projects on this machinenpm run astro preferences --global disable devOverlay
# Check if the dev overlay is enabled for the current usernpm run astro preferences list devOverlay#9129 8bfc20511 Thanks @FredKSchott! - Update error log formatting
#9222 279e3c1b3 Thanks @matthewp! - Ensure the dev-overlay-window is anchored to the bottom
#9218 f4401c8c1 Thanks @matthewp! - Improve high contrast mode with the Dev Overlay
#9227 4b8a42406 Thanks @matthewp! - Ensure overlay x-ray z-index is higher than the island
#9214 4fe523b00 Thanks @Princesseuh! - Fixes a number of small user experience bugs with the dev overlay
0dc99c9a2 Thanks @florian-lefebvre! - Prevents the Code component from crashing if the lang isn’t supported by falling back to plaintext.d90714fc3 Thanks @SpencerWhitehead7! - Fixes an issue where links with the same pathname as the current page, but different search params, were not prefetched.#9118 000e8f465 Thanks @Princesseuh! - Redesign Dev Overlay main screen to show more information, such as the coolest integrations, your current Astro version and more.
#9118 000e8f465 Thanks @Princesseuh! - Fixes an issue where links with the same pathname as the current page, but different search params, were not prefetched.
#9138 abf601233 Thanks @bluwy! - Updates the unified, remark, and rehype dependencies to latest. Make sure to update your custom remark and rehype plugins as well to be compatible with the latest versions.
Potentially breaking change: The default value of markdown.remarkRehype.footnoteBackLabel is changed from "Back to content" to "Back to reference 1". See the mdast-util-to-hast commit for more information.
#9181 cdabf6ef0 Thanks @bluwy! - Removes support for returning simple objects from endpoints (deprecated since Astro 3.0). You should return a Response instead.
ResponseWithEncoding is also removed. You can refactor the code to return a response with an array buffer instead, which is encoding agnostic.
The types for middlewares have also been revised. To type a middleware function, you should now use MiddlewareHandler instead of MiddlewareResponseHandler. If you used defineMiddleware() to type the function, no changes are needed.
#9122 1c48ed286 Thanks @bluwy! - Adds Vite 5 support. There are no breaking changes from Astro. Check the Vite migration guide for details of the breaking changes from Vite instead.
#9196 37697a2c5 Thanks @bluwy! - Removes support for Shiki custom language’s path property. The language JSON file should be imported and passed to the option instead.
import customLang from './custom.tmLanguage.json'
export default defineConfig({ markdown: { shikiConfig: { langs: [ { path: './custom.tmLanguage.json' }, customLang, ], }, },})#9168 153a5abb9 Thanks @bluwy! - Removes deprecated features from Astro 3.0
supportedAstroFeatures to specify a list of features they support.build.split and build.excludeMiddleware options are removed. Use functionPerRoute and edgeMiddleware from adapters instead.markdown.drafts option and draft feature is removed. Use content collections instead.getHeaders() exported from markdown files is removed. Use getHeadings() instead.#9105 6201bbe96 Thanks @FredKSchott! - Update CLI logging experience
#9161 bd0c2e9ae Thanks @bluwy! - Renames the entryPoint property of the injectRoute integrations API to entrypoint for consistency. A warning will be shown prompting you to update your code when using the old name.
#9149 0fe3a7ed5 Thanks @bluwy! - Removes vendored Vite’s importMeta.d.ts file in favour of Vite 5’s new vite/types/import-meta.d.ts export
#9150 710be505c Thanks @bluwy! - Refactors virtual modules exports. This should not break your project unless you import Astro’s internal modules, including:
astro/middleware/namespaceastro/transitionsastro/transitions/routerastro/transitions/eventsastro/transitions/typesastro/prefetchastro/i18nUpdated dependencies [abf601233, addb57c8e, c7953645e]:
#9090 c87223c21 Thanks @martrapp! - Take full control over the behavior of view transitions!
Three new events now complement the existing astro:after-swap and astro:page-load events:
astro: before - preparation; // Control how the DOM and other resources of the target page are loadedastro: after - preparation; // Last changes before taking off? Remove that loading indicator? Here you go!astro: before - swap; // Control how the DOM is updated to match the new pageThe astro:before-* events allow you to change properties and strategies of the view transition implementation.
The astro:after-* events are notifications that a phase is complete.
Head over to docs to see the full view transitions lifecycle including these new events!
#9092 0ea4bd47e Thanks @smitbarmase! - Changes the fallback prefetch behavior on slow connections and when data saver mode is enabled. Instead of disabling prefetch entirely, the tap strategy will be used.
#9166 cba6cf32d Thanks @matthewp! - The Picture component is no longer experimental
The <Picture /> component, part of astro:assets, has exited experimental status and is now recommended for use. There are no code changes to the component, and no upgrade to your project is necessary.
This is only a change in documentation/recommendation. If you were waiting to use the <Picture /> component until it had exited the experimental stage, wait no more!
#9092 0ea4bd47e Thanks @smitbarmase! - Adds a ignoreSlowConnection option to the prefetch() API to prefetch even on data saver mode or slow connection.
7ff8d62bf Thanks @ematipico! - Revert fix around fallback system, which broken injected styles#9121 f4efd1c80 Thanks @peng! - Adds a warning if astro add fetches a package but returns a non-404 status
#9142 7d55cf68d Thanks @ematipico! - Consistely emit fallback routes in the correct folders.
#9119 306781795 Thanks @ematipico! - Fix a flaw in the i18n fallback logic, where the routes didn’t preserve their metadata, such as hoisted scripts
#9140 7742fd7dc Thanks @martrapp! - View Transitions: handle clicks on SVGAElements and image maps”
#9101 e3dce215a Thanks @ematipico! - Add a new property Astro.currentLocale, available when i18n is enabled.
#9091 536c6c9fd Thanks @ematipico! - The routingStrategy prefix-always should not force its logic to endpoints. This fixes some regression with astro:assets and @astrojs/rss.
#9102 60e8210b0 Thanks @Princesseuh! - In the dev overlay, when there’s too many plugins enabled at once, some of the plugins will now be hidden in a separate sub menu to avoid the bar becoming too long
#9085 fc66ecff1 Thanks @ematipico! - When redirecting to the default root locale, Astro middleare should take into consideration the value of trailingSlash
#9067 c6e449c5b Thanks @danielhajduk! - Fixes display of debug messages when using the --verbose flag
#9075 c5dc8f2ec Thanks @Princesseuh! - Fix Passthrough image service generating multiple images with the same content in certain cases
#9083 4537ecf0d Thanks @bluwy! - Uses new createShikiHighlighter API from @astrojs/markdown-remark to avoid code duplication
#9084 045e5ec97 Thanks @matthewp! - Supports formmethod and formaction for form overrides
#9087 b895113a0 Thanks @alexanderniebuhr! - Fixes the regression which broke bundling of image service for pre-rendered pages, which was introduced by #8854
#9058 5ef89ef33 Thanks @Princesseuh! - Add a new settings panel to the dev overlay
#9045 84312f24f Thanks @rishi-raj-jain! - Fixes preview server trailingSlash handling for request URLs with query strings
Updated dependencies [4537ecf0d]:
50164f5e3 Thanks @natemoo-re! - Fix a regression introduced in 3.5.0 related to content collection styles1bc331968 Thanks @ematipico! - Correctly infer the presence of an user middleware#9037 ea71975ec Thanks @sarah11918! - Updates i18n configuration reference
#9051 15b84ccb9 Thanks @ematipico! - Fix a regression where endpoints were incorrectly processed during SSG build when trailingSlash: "always"
#9042 7dedd17fc Thanks @rishi-raj-jain! - Safely bail when the xclip command does not exist on Linux when trying to copy to clipboard with astro info
#9050 bf0286e50 Thanks @Princesseuh! - Fix —verbose flag not working
#9049 49b82edb2 Thanks @Princesseuh! - Fix image errors when images were used on the client
#8869 f5bdfa272 Thanks @matthewp! - ## Integration Hooks to add Middleware
It’s now possible in Astro for an integration to add middleware on behalf of the user. Previously when a third party wanted to provide middleware, the user would need to create a src/middleware.ts file themselves. Now, adding third-party middleware is as easy as adding a new integration.
For integration authors, there is a new addMiddleware function in the astro:config:setup hook. This function allows you to specify a middleware module and the order in which it should be applied:
import { defineMiddleware } from 'astro:middleware';
export const onRequest = defineMiddleware(async (context, next) => { const response = await next();
if (response.headers.get('content-type') === 'text/html') { let html = await response.text(); html = minify(html); return new Response(html, { status: response.status, headers: response.headers, }); }
return response;});You can now add your integration’s middleware and specify that it runs either before or after the application’s own defined middleware (defined in src/middleware.{js,ts})
export function myIntegration() { return { name: 'my-integration', hooks: { 'astro:config:setup': ({ addMiddleware }) => { addMiddleware({ entrypoint: 'my-package/middleware', order: 'pre', }); }, }, };}#8854 3e1239e42 Thanks @natemoo-re! - Provides a new, experimental build cache for Content Collections as part of the Incremental Build RFC. This includes multiple refactors to Astro’s build process to optimize how Content Collections are handled, which should provide significant performance improvements for users with many collections.
Users building a static site can opt-in to preview the new build cache by adding the following flag to your Astro config:
export default { experimental: { contentCollectionCache: true, },};When this experimental feature is enabled, the files generated from your content collections will be stored in the cacheDir (by default, node_modules/.astro) and reused between builds. Most CI environments automatically restore files in node_modules/ by default.
In our internal testing on the real world Astro Docs project, this feature reduces the bundling step of astro build from 133.20s to 10.46s, about 92% faster. The end-to-end astro build process used to take 4min 58s and now takes just over 1min for a total reduction of 80%.
If you run into any issues with this experimental feature, please let us know!
You can always bypass the cache for a single build by passing the --force flag to astro build.
astro build --force#8963 fda3a0213 Thanks @matthewp! - Form support in View Transitions router
The <ViewTransitions /> router can now handle form submissions, allowing the same animated transitions and stateful UI retention on form posts that are already available on <a> links. With this addition, your Astro project can have animations in all of these scenarios:
navigate() API.This feature is opt-in for semver reasons and can be enabled by adding the handleForms prop to the `
---import { ViewTransitions } from 'astro:transitions';---
<html> <head> <!-- ... --> <ViewTransitions handleForms /> </head> <body> <!-- ... --> </body></html>Just as with links, if you don’t want the routing handling a form submission, you can opt out on a per-form basis with the data-astro-reload property:
<form class="contact-form" action="/request" method="post" data-astro-reload> <!-- ...--></form>Form support works on post method="get" and method="post" forms.
#8954 f0031b0a3 Thanks @Princesseuh! - Updates the Image Services API to now delete original images from the final build that are not used outside of the optimization pipeline. For users with a large number of these images (e.g. thumbnails), this should reduce storage consumption and deployment times.
#8984 26b1484e8 Thanks @Princesseuh! - Adds a new property propertiesToHash to the Image Services API to allow specifying which properties of getImage() / <Image /> / <Picture /> should be used for hashing the result files when doing local transformations. For most services, this will include properties such as src, width or quality that directly changes the content of the generated image.
#9010 100b61ab5 Thanks @jasikpark! - The <Picture /> component will now use jpg and jpeg respectively as fallback formats when the original image is in those formats.
#8974 143bacf39 Thanks @ematipico! - Experimental support for i18n routing.
Astro’s experimental i18n routing API allows you to add your multilingual content with support for configuring a default language, computing relative page URLs, and accepting preferred languages provided by your visitor’s browser. You can also specify fallback languages on a per-language basis so that your visitors can always be directed to existing content on your site.
Enable the experimental routing option by adding an i18n object to your Astro configuration with a default location and a list of all languages to support:
import { defineConfig } from 'astro/config';
export default defineConfig({ experimental: { i18n: { defaultLocale: 'en', locales: ['en', 'es', 'pt-br'], }, },});Organize your content folders by locale depending on your i18n.routingStrategy, and Astro will handle generating your routes and showing your preferred URLs to your visitors.
├── src│ ├── pages│ │ ├── about.astro│ │ ├── index.astro│ │ ├── es│ │ │ ├── about.astro│ │ │ ├── index.astro│ │ ├── pt-br│ │ │ ├── about.astro│ │ │ ├── index.astroCompute relative URLs for your links with getRelativeLocaleUrl from the new astro:i18n module:
---import { getRelativeLocaleUrl } from 'astro:i18n';const aboutUrl = getRelativeLocaleUrl('pt-br', 'about');---
<p>Learn more <a href={aboutURL}>About</a> this site!</p>Enabling i18n routing also provides two new properties for browser language detection: Astro.preferredLocale and Astro.preferredLocaleList. These combine the browser’s Accept-Langauge header, and your site’s list of supported languages and can be used to automatically respect your visitor’s preferred languages.
Read more about Astro’s experimental i18n routing in our documentation.
#8951 38e21d127 Thanks @bluwy! - Prefetching is now supported in core
You can enable prefetching for your site with the prefetch: true config. It is enabled by default when using View Transitions and can also be used to configure the prefetch behaviour used by View Transitions.
You can enable prefetching by setting prefetch:true in your Astro config:
import { defineConfig } from 'astro/config';
export default defineConfig({ prefetch: true,});This replaces the @astrojs/prefetch integration, which is now deprecated and will eventually be removed.
Visit the Prefetch guide for more information.
#8903 c5010aad3 Thanks @horo-fox! - Adds experimental support for multiple shiki themes with the new markdown.shikiConfig.experimentalThemes option.
#9016 1ecc9aa32 Thanks @Princesseuh! - Add ability to “Click to go editor” on auditted elements in the dev overlay
#9029 29b83e9e4 Thanks @Princesseuh! - Use UInt8Array instead of Buffer for both the input and return values of the transform() hook of the Image Service API to ensure compatibility with non-Node runtimes.
This change is unlikely to affect you, but if you were previously relying on the return value being a Buffer, you may convert an UInt8Array to a Buffer using Buffer.from(your_array).
Updated dependencies [c5010aad3]:
#9000 35739d01e Thanks @martrapp! - Fixes an error in dev mode on Safari where view transitions prevented navigating to pages with client:only components
#9014 d979b8f0a Thanks @Princesseuh! - Add animations, shadows and general styling tweaks to the Dev Overlay to better match the intended design.
#8996 3988bbcc9 Thanks @bluwy! - Adds compatibility for shiki languages with the path property
#8986 910eb00fe Thanks @Princesseuh! - Fix sizes attribute not being present on source elements when using it on the Picture component
#8977 40a061679 Thanks @matthewp! - Prevent route announcer from being visible
#8929 2da33b7a1 Thanks @lilnasy! - Fixes an issue where rendering the same slot multiple times invoked it only once.
#8978 cc3278bb6 Thanks @Princesseuh! - In the dev overlay, add a tooltip showing the currently hovered / focused plugin’s name
#8966 262cef248 Thanks @Princesseuh! - Fix Dev Overlay not working properly when view transitions are enabled
#8932 5fed432b0 Thanks @Princesseuh! - Fixed window component appearing over the dev overlay on small windows. Added a maximum length to sections of the tooltip component
#8965 430c470ac Thanks @matthewp! - Move VT route announcer styles to a class
Doing so allows stricter CSP policies.
#8762 35cd810f0 Thanks @evadecker! - Upgrades Zod to 3.22.4
#8928 ca90b47cf Thanks @HiDeoo! - Renames dev overlay UI Toolkit component names for consistency.
#8755 fe4079f05 Thanks @matthewp! - Page Partials
A page component can now be identified as a partial page, which will render its HTML content without including a <! DOCTYPE html> declaration nor any <head> content.
A rendering library, like htmx or Stimulus or even just jQuery can access partial content on the client to dynamically update only parts of a page.
Pages marked as partials do not have a doctype or any head content included in the rendered result. You can mark any page as a partial by setting this option:
---export const partial = true;---
<li>This is a single list item.</li>Other valid page files that can export a value (e.g. .mdx) can also be marked as partials.
Read more about Astro page partials in our documentation.
#8821 4740d761a Thanks @Princesseuh! - Improved image optimization performance
Astro will now generate optimized images concurrently at build time, which can significantly speed up build times for sites with many images. Additionally, Astro will now reuse the same buffer for all variants of an image. This should improve performance for websites with many variants of the same image, especially when using remote images.
No code changes are required to take advantage of these improvements.
#8757 e99586787 Thanks @Princesseuh! - Dev Overlay (experimental)
Provides a new dev overlay for your browser preview that allows you to inspect your page islands, see helpful audits on performance and accessibility, and more. A Dev Overlay Plugin API is also included to allow you to add new features and third-party integrations to it.
You can enable access to the dev overlay and its API by adding the following flag to your Astro config:
export default { experimental: { devOverlay: true, },};Read the Dev Overlay Plugin API documentation for information about building your own plugins to integrate with Astro’s dev overlay.
#8880 8c3d4a859 Thanks @alexanderniebuhr! - Moves the logic for overriding the image service out of core and into adapters. Also fixes a regression where a valid astro:assets image service configuration could be overridden.
#8870 5ea6ee0ed Thanks @xstevenyung! - prevent production install on astro add cmd
#8840 5c888c10b Thanks @martrapp! - Fixes styles of client:only components not persisting during view transitions in dev mode
#8814 ad2bb9155 Thanks @lilnasy! - Fix an issue where 500.astro did not render when the middleware threw an error.
#8863 326e17893 Thanks @florian-lefebvre! - Fixes an issue where the dev server logged the full file path on updates.
#8852 2c18e2d12 Thanks @rayriffy! - Only use Vite config from astro.config.mjs as source of truth
#8828 11f45b9a3 Thanks @rishi-raj-jain! - fix file system path references
#8779 2b8a459a6 Thanks @ematipico! - Enriches the explanation of the base configuration with examples.
#8823 8946f2a25 Thanks @Princesseuh! - Fix duplicate images being created in some cases when using densities and/or widths
#8842 b405b039a Thanks @Princesseuh! - Fixes Picture component not taking into account the fallback format specified
#8827 ce3025cfa Thanks @rishi-raj-jain! - better error handling there whenever we don’t get a normal 200 response
#8817 f8de1983b Thanks @bluwy! - Fix error overlay syntax highlighting
#8838 2f9e2083d Thanks @dominikg! - deps: unpin and update tsconfck from 3.0.0-next.9 to ^3.0.0
#8823 8946f2a25 Thanks @Princesseuh! - fix remote srcset images not being resized
#8808 2993055be Thanks @delucis! - Adds support for an --outDir CLI flag to astro build
#8502 c4270e476 Thanks @bluwy! - Updates the internal shiki syntax highlighter to shikiji, an ESM-focused alternative that simplifies bundling and maintenance.
There are no new options and no changes to how you author code blocks and syntax highlighting.
Potentially breaking change: While this refactor should be transparent for most projects, the transition to shikiji now produces a smaller HTML markup by attaching a fallback color style to the pre or code element, instead of to the line span directly. For example:
Before:
<code class="astro-code" style="background-color: #24292e"> <pre> <span class="line" style="color: #e1e4e8">my code</span> </pre></code>After:
<code class="astro-code" style="background-color: #24292e; color: #e1e4e8"> <pre> <span class="line">my code<span> </pre></code>This does not affect the colors as the span will inherit the color from the parent, but if you’re relying on a specific HTML markup, please check your site carefully after upgrading to verify the styles.
#8798 f369fa250 Thanks @Princesseuh! - Fixed tsconfig.json’s new array format for extends not working. This was done by migrating Astro to use tsconfck instead of tsconfig-resolver to find and parse tsconfig.json files.
#8620 b2ae9ee0c Thanks @Princesseuh! - Adds experimental support for generating srcset attributes and a new <Picture /> component.
Two new properties have been added to Image and getImage(): densities and widths.
These properties can be used to generate a srcset attribute, either based on absolute widths in pixels (e.g. [300, 600, 900]) or pixel density descriptors (e.g. ["2x"] or [1.5, 2]).
---import { Image } from 'astro';import myImage from './my-image.jpg';---
<Image src={myImage} width={myImage.width / 2} densities={[1.5, 2]} alt="My cool image" /><img src="/_astro/my_image.hash.webp" srcset="/_astro/my_image.hash.webp 1.5x, /_astro/my_image.hash.webp 2x" alt="My cool image"/>The experimental <Picture /> component can be used to generate a <picture> element with multiple <source> elements.
The example below uses the format property to generate a <source> in each of the specified image formats:
---import { Picture } from 'astro:assets';import myImage from './my-image.jpg';---
<Picture src={myImage} formats={['avif', 'webp']} alt="My super image in multiple formats!" />The above code will generate the following HTML, and allow the browser to determine the best image to display:
<picture> <source srcset="..." type="image/avif" /> <source srcset="..." type="image/webp" /> <img src="..." alt="My super image in multiple formats!" /></picture>The Picture component takes all the same props as the Image component, including the new densities and widths properties.
#8771 bd5aa1cd3 Thanks @lilnasy! - Fixed an issue where the transitions router did not work within framework components.
#8800 391729686 Thanks @lilnasy! - Fixed an issue where attempting to assign a variable onto locals threw an error.
#8795 f999365b8 Thanks @bluwy! - Fix markdown page charset to be utf-8 by default (same as Astro 2)
#8810 0abff97fe Thanks @jacobthesheep! - Remove network-information-types package since TypeScript supports Network Information API natively.
#8813 3bef32f81 Thanks @martrapp! - Save and restore focus for persisted input elements during view transitions
Updated dependencies [c4270e476]:
#8638 160d1cd75 Thanks @florian-lefebvre! - The @astrojs/tailwind integration now creates a tailwind.config.mjs file by default
#8767 30de32436 Thanks @martrapp! - Revert fix #8472
#8472 caused some style files from previous pages to not be cleanly deleted on view transitions. For a discussion of a future fix for the original issue #8144 see #8745.
#8741 c4a7ec425 Thanks @lilnasy! - Fixed an issue on Windows where lowercase drive letters in current working directory led to missing scripts and styles.
#8772 c24f70d91 Thanks @martrapp! - Fix flickering during view transitions
#8754 93b092266 Thanks @bluwy! - Make CSS chunk names less confusing
#8776 29cdfa024 Thanks @martrapp! - Fix transition attributes on islands
#8773 eaed844ea Thanks @sumimakito! - Fix an issue where HTML attributes do not render if getHTMLAttributes in an image service returns a Promise
#8680 31c59ad8b Thanks @bluwy! - Fix hydration on slow connection
#8698 47ea310f0 Thanks @Princesseuh! - Use a Node-specific image endpoint to resolve images in dev and Node SSR. This should fix many issues related to getting 404 from the _image endpoint under certain configurations
#8706 345808170 Thanks @bluwy! - Fix duplicated Astro and Vite injected styles
#8696 2167ffd72 Thanks @matthewp! - Support adding integrations dynamically
Astro integrations can now themselves dynamically add and configure additional integrations during set-up. This makes it possible for integration authors to bundle integrations more intelligently for their users.
In the following example, a custom integration checks whether @astrojs/sitemap is already configured. If not, the integration adds Astro’s sitemap integration, passing any desired configuration options:
import sitemap from '@astrojs/sitemap';import type { AstroIntegration } from 'astro';
const MyIntegration = (): AstroIntegration => { return { name: 'my-integration',
'astro:config:setup': ({ config, updateConfig }) => { // Look for sitemap in user-configured integrations. const userSitemap = config.integrations.find( ({ name }) => name === '@astrojs/sitemap' );
if (!userSitemap) { // If sitemap wasn’t found, add it. updateConfig({ integrations: [sitemap({ /* opts */ }], }); } }, };};#8696 2167ffd72 Thanks @matthewp! - View transitions can now be triggered from JavaScript!
Import the client-side router from “astro:transitions/client” and enjoy your new remote control for navigation:
import { navigate } from 'astro:transitions/client';
// Navigate to the selected option automatically.document.querySelector('select').onchange = (ev) => { let href = ev.target.value; navigate(href);};#8696 2167ffd72 Thanks @matthewp! - Route Announcer in <ViewTransitions />
The View Transitions router now does route announcement. When transitioning between pages with a traditional MPA approach, assistive technologies will announce the page title when the page finishes loading. This does not automatically happen during client-side routing, so visitors relying on these technologies to announce routes are not aware when a page has changed.
The view transitions route announcer runs after the astro:page-load event, looking for the page <title> to announce. If one cannot be found, the announcer falls back to the first <h1> it finds, or otherwise announces the pathname. We recommend you always include a <title> in each page for accessibility.
See the View Transitions docs for more on how accessibility is handled.
#8647 408b50c5e Thanks @lilnasy! - Fixed an issue where configured redirects with dynamic routes did not work in dev mode.
#8696 2167ffd72 Thanks @matthewp! - Fix logLevel passed to Vite build
#8696 2167ffd72 Thanks @matthewp! - Fix NoImageMetadata image path error message
#8670 e797b6816 Thanks @MichailiK! - Fix asset optimization failing when outDir is outside the project directory
#8684 824dd4670 Thanks @matthewp! - Support content collections with % in filename
#8648 cfd895d87 Thanks @lilnasy! - Fixed an issue where a response with status code 404 led to an endless loop of implicit rerouting in dev mode.
#8591 863f5171e Thanks @rishi-raj-jain! - add site url to the location of redirect
#8633 63141f3f3 Thanks @Princesseuh! - Fix build not working when having multiple images in the same Markdown file
#8636 974d5117a Thanks @martrapp! - fix: no deletion of scripts during view transition
#8645 cb838b84b Thanks @matthewp! - Fix getDataEntryById to lookup by basename
#8640 f36c4295b Thanks @matthewp! - Warn on empty content collections
#8615 4c4ad9d16 Thanks @alexanderniebuhr! - Improve the logging of assets for adapters that do not support image optimization
#8612 bcad715ce Thanks @matthewp! - Ensure cookies are attached when middleware changes the Response
#8598 bdd267d08 Thanks @Princesseuh! - Fix relative images in Markdown breaking the build process in certain circumstances
#8382 e522a5eb4 Thanks @DerTimonius! - Do not throw an error for an empty collection directory.
#8600 ed54d4644 Thanks @FredKSchott! - Improve config info telemetry
#8592 70f2a8003 Thanks @bluwy! - Fix alias plugin causing CSS ordering issue
#8614 4398e9298 Thanks @lilnasy! - Fixed an issue where spaces and unicode characters in project path prevented middleware from running.
#8603 8f8b9069d Thanks @matthewp! - Prevent body scripts from re-executing on navigation
#8609 5a988eaf6 Thanks @bluwy! - Fix Astro HMR from a CSS dependency
Updated dependencies [ed54d4644]:
#8580 8d361169b Thanks @rishi-raj-jain! - add hide to style & script generated for island
#8568 95b5f6280 Thanks @Princesseuh! - Fix small types issues related to astro:assets’s AVIF support and getImage
#8579 0586e20e8 Thanks @rishi-raj-jain! - show redirect symbol as of the page
#8467 ecc65abbf Thanks @Princesseuh! - Add a new image.endpoint setting to allow using a custom endpoint in dev and SSR
#8518 2c4fc878b Thanks @Princesseuh! - Adds support for using AVIF (.avif) files with the Image component. Importing an AVIF file will now correctly return the same object shape as other image file types. See the Image docs for more information on the different properties available on the returned object.
#8464 c92e0acd7 Thanks @Princesseuh! - Add types for the object syntax for style (ex: style={{color: 'red'}})
#8532 7522bb491 Thanks @bluwy! - Improve markdown rendering performance by sharing processor instance
#8537 f95febf96 Thanks @martrapp! - bugfix checking media-type in client-side router
#8536 b85c8a78a Thanks @Princesseuh! - Improved error messages around astro:assets
#7607 45364c345 Thanks @FineWolf! - Add CollectionKey, ContentCollectionKey, and DataCollectionKey exports to astro:content
Updated dependencies [d93987824, 7522bb491]:
#8484 78b82bb39 Thanks @bb010g! - fix(astro): add support for src/content/config.mts files
#8504 5e1099f68 Thanks @ematipico! - Minify the HTML of the redicts emitted during the build.
#8480 644825845 Thanks @yamanoku! - Do not add type=“text/css” to inline style tag
#8472 fa77fa63d Thanks @matthewp! - Prevent client:only styles from being removed in dev (View Transitions)
#8506 23f9536de Thanks @mascii! - chore: correct description of attribute option in scopedStyleStrategy
#8505 2db9762eb Thanks @martrapp! - Restore horizontal scroll position on history navigation (view transitions)
#8461 435b10549 Thanks @rdwz! - Fix lang unspecified code blocks (markdownlint MD040)
#8492 a6a516d94 Thanks @xiBread! - fix(types): make image.service optional
#8522 43bc5f2a5 Thanks @martrapp! - let view transitions handle same origin redirects
#8491 0ca332ba4 Thanks @martrapp! - Bugfixes for back navigation in the view transition client-side router
#8437 b3cf1b327 Thanks @Princesseuh! - Fix imports of images with uppercased file extensions not working
#8440 b92d066b7 Thanks @natemoo-re! - Fix issue where renderToFinalDestination would throw in internal Astro code
#8351 7d95bd9ba Thanks @lilnasy! - Fixed a case where dynamic imports tried to preload inlined stylesheets.
#8353 1947ef7a9 Thanks @elevatebart! - Astro will now skip asset optimization when there is a query in the import. Instead, it will let vite deal with it using plugins.
<script>// This will not return an optimized assetimport Component from './Component.vue?component';</script>#8424 61ad70fdc Thanks @itsmatteomanf! - Fixes remote assets caching logic to not use expired assets
#8306 d2f2a11cd Thanks @jacobthesheep! - Support detecting Bun when logging messages with package manager information.
#8414 5126c6a40 Thanks @Princesseuh! - Fix missing type for imageConfig export from astro:assets
#8416 48ff7855b Thanks @Princesseuh! - Installing will no longer fail when Sharp can’t be installed
#8332 8935b3b46 Thanks @martrapp! - Fix scroll position when navigating back from page w/o ViewTransitions
#8388 362491b8d Thanks @natemoo-re! - Properly handle BEFORE_HYDRATION_SCRIPT generation, fixing MIME type error on hydration.
#8370 06e7256b5 Thanks @itsmatteomanf! - Removed extra curly brace.
#8366 c5633434f Thanks @natemoo-re! - Update chunkFileNames to avoid emitting invalid characters
#8367 405ad9501 Thanks @Princesseuh! - Fix tsc complaining about imports of .astro files in specific cases
#8357 6b1e79814 Thanks @itsmatteomanf! - Added counter to show progress for assets image generation.
Fixed small unit of measurement error.
Updated dependencies [0ce0720c7]:
#8327 5f3a44aee Thanks @natemoo-re! - Improve astro info command formatting, allow users to copy info automatically
#8320 b21038c19 Thanks @ematipico! - Exclude redirects from split entry points
#8331 7a894eec3 Thanks @matthewp! - Prevent View Transition fallback from waiting on looping animations
#8231 af41b03d0 Thanks @justinbeaty! - Fixes scroll behavior when using View Transitions by enabling manual scroll restoration
#8324 0752cf368 Thanks @matthewp! - Prevent React hook call warnings when used with MDX
When React and MDX are used in the same project, if the MDX integration is added before React, previously you’d get a warning about hook calls.
This makes it so that the MDX integration’s JSX renderer is last in order.