Astro 3.0

.changeset/afraid-dots-whisper.md

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+---
+'@astrojs/cloudflare': major
+'@astrojs/partytown': major
+'@astrojs/tailwind': major
+'@astrojs/netlify': major
+'@astrojs/sitemap': major
+'@astrojs/preact': major
+'@astrojs/svelte': major
+'@astrojs/vercel': major
+'@astrojs/react': major
+'@astrojs/solid-js': major
+'@astrojs/deno': major
+'@astrojs/node': major
+'@astrojs/lit': major
+'@astrojs/vue': major
+'create-astro': major
+'@astrojs/prism': major
+'@astrojs/rss': major
+'@astrojs/telemetry': major
+'astro': major
+'@astrojs/alpinejs': minor
+'@astrojs/prefetch': minor
+'@astrojs/markdoc': minor
+'@astrojs/underscore-redirects': minor
+'@astrojs/mdx': minor
+'@astrojs/internal-helpers': minor
+---
+
+Remove support for Node 16. The lowest supported version by Astro and all integrations is now v18.14.1. As a reminder, Node 16 will be deprecated on the 11th September 2023.

.changeset/angry-dogs-shake.md

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+---
+'astro': patch
+---
+
+Use `undici` for File changeset for Node 16 compatibility

.changeset/big-tips-whisper.md

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+---
+'@astrojs/internal-helpers': patch
+---
+
+Trigger re-release to fix `collapseDuplicateSlashes` export

.changeset/brave-cheetahs-float.md

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+---
+'astro': patch
+---
+
+Do not throw Error when users pass an object with a "type" property

.changeset/chilled-ducks-grin.md

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+---
+'astro': major
+---
+
+Removed automatic flattening of `getStaticPaths` result. `.flatMap` and `.flat` should now be used to ensure that you're returning a flat array.

.changeset/clever-bats-breathe.md

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+---
+'astro': major
+---
+
+This import alias is no longer included by default with astro:assets. If you were using this alias with experimental assets, you must convert them to relative file paths, or create your own [import aliases](https://docs.astro.build/en/guides/aliases/).
+
+```diff
+---
+// src/pages/posts/post-1.astro
+- import rocket from '~/assets/rocket.png'
++ import rocket from '../../assets/rocket.png';
+---
+```

.changeset/cool-feet-rest.md

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+---
+'@astrojs/solid-js': major
+---
+
+New `include` and `exclude` config options
+
+The Solid integration now has new `include` and `exclude` config options. Use these if you want to use Solid alongside another JSX framework; include specifies files to be compiled for Solid and `exclude` does the opposite.

.changeset/cool-jokes-clap.md

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+---
+'astro': major
+---
+
+Fixes for the `class:list` directive
+
+- Previously, `class:list` would ocassionally not be merged the `class` prop when passed to Astro components. Now, `class:list` is always converted to a `class` prop (as a string value).
+- Previously, `class:list` diverged from [`clsx`](https://github.com/lukeed/clsx) in a few edge cases. Now, `class:list` uses [`clsx`](https://github.com/lukeed/clsx) directly.
+  - `class:list` used to deduplicate matching values, but it no longer does
+  - `class:list` used to sort individual values, but it no longer does
+  - `class:list` used to support `Set` and other iterables, but it no longer does

.changeset/curvy-experts-jog.md

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+---
+'@astrojs/cloudflare': major
+'@astrojs/partytown': major
+'@astrojs/tailwind': major
+'@astrojs/netlify': major
+'@astrojs/sitemap': major
+'@astrojs/preact': major
+'@astrojs/svelte': major
+'@astrojs/vercel': major
+'@astrojs/react': major
+'@astrojs/solid-js': major
+'@astrojs/deno': major
+'@astrojs/node': major
+'@astrojs/lit': major
+'@astrojs/mdx': major
+'@astrojs/vue': major
+'@astrojs/markdown-remark': major
+'create-astro': major
+'@astrojs/prism': major
+'@astrojs/rss': major
+'@astrojs/telemetry': major
+'astro': major
+'@astrojs/alpinejs': minor
+'@astrojs/prefetch': minor
+'@astrojs/markdoc': minor
+'@astrojs/underscore-redirects': minor
+'@astrojs/internal-helpers': minor
+---
+
+Astro 3.0 Release Candidate

.changeset/cyan-carrots-stare.md

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+---
+'astro': patch
+---
+
+Update error message when Sharp couldn't be found (tends to happen on pnpm notably)

.changeset/dirty-lies-cover.md

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+---
+'@astrojs/cloudflare': minor
+'@astrojs/netlify': minor
+'@astrojs/vercel': minor
+'@astrojs/deno': minor
+'@astrojs/node': minor
+'astro': minor
+---
+
+Introduced the concept of feature map. A feature map is a list of features that are built-in in Astro, and an Adapter
+can tell Astro if it can support it.
+
+```ts
+import {AstroIntegration} from "./astro";
+
+function myIntegration(): AstroIntegration {
+    return {
+        name: 'astro-awesome-list',
+        // new feature map
+        supportedAstroFeatures: {
+            hybridOutput: 'experimental',
+            staticOutput: 'stable',
+            serverOutput: 'stable',
+            assets: {
+                supportKind: 'stable',
+                isSharpCompatible: false,
+                isSquooshCompatible: false,
+            },
+        }
+    }
+}
+```

.changeset/fair-emus-divide.md

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+---
+'astro': major
+'@astrojs/netlify': minor
+---
+
+The `build.split` and `build.excludeMiddleware` configuration options are deprecated and have been replaced by options in the adapter config.
+
+If your config includes the `build.excludeMiddleware` option, replace it with `edgeMiddleware` in your adapter options:
+
+```diff
+import { defineConfig } from "astro/config";
+import netlify from "@astrojs/netlify/functions";
+
+export default defineConfig({
+     build: {
+-        excludeMiddleware: true
+     },
+     adapter: netlify({
++        edgeMiddleware: true
+     }),
+});
+```
+
+If your config includes the `build.split` option, replace it with `functionPerRoute` in your adapter options:
+
+```diff
+import { defineConfig } from "astro/config";
+import netlify from "@astrojs/netlify/functions";
+
+export default defineConfig({
+     build: {
+-        split: true
+     },
+     adapter: netlify({
++        functionPerRoute: true
+     }),
+});
+```
+

.changeset/fair-eyes-promise.md

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+---
+'@astrojs/mdx': major
+---
+
+Support Astro 3 JSX format
+
+This upgrades the MDX plugin to correctly work with the new JSX render API in Astro 3.

.changeset/famous-queens-itch.md

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+---
+'@astrojs/mdx': patch
+---
+
+Re-orders the MDX plugin to run before Astro's JSX plugin

.changeset/four-houses-compete.md

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+---
+'astro': major
+---
+
+Sharp is now the default image service used for `astro:assets`. If you would prefer to still use Squoosh, you can update your config with the following:
+
+```ts
+import { defineConfig, squooshImageService } from "astro/config";
+
+// https://astro.build/config
+export default defineConfig({
+  image: {
+    service: squooshImageService(),
+  }
+})
+```
+
+However, not only do we recommend using Sharp as it is faster and more reliable, it is also highly likely that the Squoosh service will be removed in a future release.

.changeset/gentle-deers-yawn.md

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+---
+'astro': patch
+---
+
+Call `astro sync` once before calling `astro check`

.changeset/gentle-meals-crash.md

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+---
+'astro': major
+---
+
+Remove support for `Astro.__renderMarkdown` which is used by `@astrojs/markdown-component`. 
+
+The `<Markdown />` component was deprecated in Astro v1 and is completely removed in v3. This integration must now be removed from your project.
+
+As an alternative, you can use community packages that provide a similar component like https://github.com/natemoo-re/astro-remote instead.

.changeset/giant-plants-sip.md

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+---
+'astro': major
+---
+
+Remove backwards-compatible kebab-case transform for camelCase CSS variable names passed to the `style` attribute. If you were relying on the kebab-case transform in your styles, make sure to use the camelCase version to prevent missing styles. For example:
+
+```astro
+---
+const myValue = "red"
+---
+
+<!-- input -->
+<div style={{ "--myValue": myValue }}></div>
+
+<!-- output (before) -->
+<div style="--my-value:var(--myValue);--myValue:red"></div>
+
+<!-- output (after) -->
+<div style="--myValue:red"></div>
+```
+
+```diff
+<style>
+  div {
+-   color: var(--my-value);
++   color: var(--myValue);
+  }
+</style>
+```

.changeset/happy-penguins-hug.md

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+---
+'astro': major
+---
+
+Remove deprecated config option types, deprecated script/style attributes, and deprecated `image` export from `astro:content`

.changeset/heavy-walls-arrive.md

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+---
+'@astrojs/cloudflare': major
+'@astrojs/netlify': major
+'@astrojs/vercel': major
+'astro': major
+---
+
+When using an adapter that supports neither Squoosh or Sharp, Astro will now automatically use an image service that does not support processing, but still provides the other benefits of `astro:assets` such as enforcing `alt`, no CLS etc to users

.changeset/honest-houses-deny.md

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+---
+'@astrojs/rss': major
+---
+
+Update the `rss()` default export to return a `Response` instead of a simple object, which is deprecated in Astro 3.0. If you were directly returning the `rss()` result from an endpoint before, this breaking change should not affect you.
+
+You can also import `getRssString()` to get the RSS string directly and use it to return your own Response:
+
+```ts
+// src/pages/rss.xml.js
+import { getRssString } from '@astrojs/rss';
+
+export async function get(context) {
+  const rssString = await getRssString({
+    title: 'Buzz’s Blog',
+    ...
+  });
+
+  return new Response(rssString, {
+    headers: {
+      'Content-Type': 'application/xml',
+    },
+  });
+}
+```

.changeset/large-countries-share.md

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+---
+'@astrojs/preact': major
+---
+
+New `include` and `exclude` config options
+
+The Preact integration now has new `include` and `exclude` config options. Use these if you want to use Preact alongside another JSX framework; include specifies files to be compiled for Preact and `exclude` does the opposite.

.changeset/loud-candles-admire.md

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+---
+'@astrojs/mdx': patch
+---
+
+Handle `components` exports handling itself

.changeset/lovely-walls-call.md

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+---
+'astro': patch
+---
+
+Improve fidelity of time stats when running `astro build`

.changeset/many-pears-explode.md

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+---
+'astro': major
+---
+
+Export experimental `dev`, `build`, `preview`, and `sync` APIs from `astro`. These APIs allow you to run Astro's commands programmatically, and replaces the previous entry point that runs the Astro CLI.
+
+While these APIs are experimental, the inline config parameter is relatively stable without foreseeable changes. However, the returned results of these APIs are more likely to change in the future.
+
+```ts
+import { dev, build, preview, sync, type AstroInlineConfig } from 'astro';
+
+// Inline Astro config object.
+// Provide a path to a configuration file to load or set options directly inline.
+const inlineConfig: AstroInlineConfig = {
+  // Inline-specific options...
+  configFile: './astro.config.mjs',
+  logLevel: 'info',
+  // Standard Astro config options...
+  site: 'https://example.com',
+};
+
+// Start the Astro dev server
+const devServer = await dev(inlineConfig);
+await devServer.stop();
+
+// Build your Astro project
+await build(inlineConfig);
+
+// Preview your built project
+const previewServer = await preview(inlineConfig);
+await previewServer.stop();
+
+// Generate types for your Astro project
+await sync(inlineConfig);
+```

.changeset/mighty-dancers-lay.md

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+---
+'astro': major
+---
+
+Removed support for old syntax of the API routes.

.changeset/nasty-garlics-listen.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Reimplement https://github.com/withastro/astro/pull/7509 to correctly emit pre-rendered pages now that `build.split` is deprecated and this configuration has been moved to `functionPerRoute` inside the adapter.

.changeset/neat-mugs-end.md

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+---
+'astro': minor
+---
+
+
+`astro:`namespace aliases for middleware and components
+
+This adds aliases of `astro:middleware` and `astro:components` for the middleware and components modules. This is to make our documentation consistent between are various modules, where some are virtual modules and others are not. Going forward new built-in modules will use this namespace.