.github/workflows/ci.yml

@@ -12,6 +12,7 @@ env:
 
 jobs:
   Tests:
+    permissions: {}
     runs-on: ${{ matrix.os }}
     timeout-minutes: 15
     strategy:
@@ -41,6 +42,7 @@ jobs:
         env:
           CI: true
   Lint:
+    permissions: {}
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
@@ -59,8 +61,9 @@ jobs:
         run: pnpm lint
       - name: build and check generated types
         if: (${{ success() }} || ${{ failure() }}) # ensures this step runs even if previous steps fail
-        run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally and commit the changes after you have reviewed them"; git diff; exit 1); }
+        run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally with `cd packages/svelte && pnpm generate:types` and commit the changes after you have reviewed them"; git diff; exit 1); }
   Benchmarks:
+    permissions: {}
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:

.github/workflows/ecosystem-ci-trigger.yml

@@ -9,6 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.repository == 'sveltejs/svelte' && github.event.issue.pull_request && startsWith(github.event.comment.body, '/ecosystem-ci run')
     steps:
+      - uses: GitHubSecurityLab/actions-permissions/monitor@v1
       - uses: actions/github-script@v6
         with:
           script: |

.github/workflows/pkg.pr.new-comment.yml

@@ -6,11 +6,15 @@ on:
     types:
       - completed
 
+permissions:
+  pull-requests: write
+
 jobs:
   build:
     name: 'Update comment'
     runs-on: ubuntu-latest
     steps:
+      - uses: GitHubSecurityLab/actions-permissions/monitor@v1
       - name: Download artifact
         uses: actions/download-artifact@v4
         with:

.github/workflows/pkg.pr.new.yml

@@ -3,6 +3,8 @@ on: [push, pull_request]
 
 jobs:
   build:
+    permissions: {}
+
     runs-on: ubuntu-latest
 
     steps:
@@ -12,7 +14,7 @@ jobs:
       - run: corepack enable
       - uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: 22.x
           cache: pnpm
 
       - name: Install dependencies

.github/workflows/release.yml

@@ -17,6 +17,7 @@ jobs:
     name: Release
     runs-on: ubuntu-latest
     steps:
+      - uses: GitHubSecurityLab/actions-permissions/monitor@v1
       - name: Checkout Repo
         uses: actions/checkout@v4
         with:
@@ -33,7 +34,7 @@ jobs:
         run: pnpm install --frozen-lockfile
 
       - name: Build
-        run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally and commit the changes after you have reviewed them"; git diff; exit 1); }
+        run: pnpm build && { [ "`git status --porcelain=v1`" == "" ] || (echo "Generated types have changed — please regenerate types locally with `cd packages/svelte && pnpm generate:types` and commit the changes after you have reviewed them"; git diff; exit 1); }
 
       - name: Create Release Pull Request or Publish to npm
         id: changesets

CONTRIBUTING.md

@@ -51,7 +51,7 @@ We use [GitHub issues](https://github.com/sveltejs/svelte/issues) for our public
 
 If you have questions about using Svelte, contact us on Discord at [svelte.dev/chat](https://svelte.dev/chat), and we will do our best to answer your questions.
 
-If you see anything you'd like to be implemented, create a [feature request issue](https://github.com/sveltejs/svelte/issues/new?template=feature_request.yml)
+If you see anything you'd like to be implemented, create a [feature request issue](https://github.com/sveltejs/svelte/issues/new?template=feature_request.yml).
 
 ### Reporting new issues
 
@@ -62,8 +62,6 @@ When [opening a new issue](https://github.com/sveltejs/svelte/issues/new/choose)
 
 ## Pull requests
 
-> HEADS UP: Svelte 5 will likely change a lot on the compiler. For that reason, please don't open PRs that are large in scope, touch more than a couple of files etc. In other words, bug fixes are fine, but big feature PRs will likely not be merged.
-
 ### Proposing a change
 
 If you would like to request a new feature or enhancement but are not yet thinking about opening a pull request, you can also file an issue with [feature template](https://github.com/sveltejs/svelte/issues/new?template=feature_request.yml).

LICENSE.md

@@ -1,4 +1,4 @@
-Copyright (c) 2016-24 [these people](https://github.com/sveltejs/svelte/graphs/contributors)
+Copyright (c) 2016-2025 [Svelte Contributors](https://github.com/sveltejs/svelte/graphs/contributors)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

README.md

@@ -1,6 +1,11 @@
-[![Cybernetically enhanced web apps: Svelte](https://sveltejs.github.io/assets/banner.png)](https://svelte.dev)
+<a href="https://svelte.dev">
+	<picture>
+		<source media="(prefers-color-scheme: dark)" srcset="assets/banner_dark.png">
+		<img src="assets/banner.png" alt="Svelte - web development for the rest of us" />
+	</picture>
+</a>
 
-[![license](https://img.shields.io/npm/l/svelte.svg)](LICENSE.md) [![Chat](https://img.shields.io/discord/457912077277855764?label=chat&logo=discord)](https://svelte.dev/chat)
+[![License](https://img.shields.io/npm/l/svelte.svg)](LICENSE.md) [![Chat](https://img.shields.io/discord/457912077277855764?label=chat&logo=discord)](https://svelte.dev/chat)
 
 ## What is Svelte?
 
@@ -24,10 +29,6 @@ You may view [our roadmap](https://svelte.dev/roadmap) if you'd like to see what
 
 Please see the [Contributing Guide](CONTRIBUTING.md) and the [`svelte`](packages/svelte) package for information on contributing to Svelte.
 
-### svelte.dev
-
-The source code for https://svelte.dev lives in the [sites](https://github.com/sveltejs/svelte/tree/master/sites/svelte.dev) folder, with all the documentation right [here](https://github.com/sveltejs/svelte/tree/master/documentation). The site is built with [SvelteKit](https://svelte.dev/docs/kit).
-
 ## Is svelte.dev down?
 
 Probably not, but it's possible. If you can't seem to access any `.dev` sites, check out [this SuperUser question and answer](https://superuser.com/q/1413402).

benchmarking/benchmarks/reactivity/kairo/kairo_avoidable.js

@@ -20,12 +20,12 @@ function setup() {
 	return {
 		destroy,
 		run() {
-			$.flush_sync(() => {
+			$.flush(() => {
 				$.set(head, 1);
 			});
 			assert($.get(computed5) === 6);
 			for (let i = 0; i < 1000; i++) {
-				$.flush_sync(() => {
+				$.flush(() => {
 					$.set(head, i);
 				});
 				assert($.get(computed5) === 6);
@@ -45,7 +45,7 @@ export async function kairo_avoidable_unowned() {
 	const { run, destroy } = setup();
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});
@@ -74,7 +74,7 @@ export async function kairo_avoidable_owned() {
 	});
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});

benchmarking/benchmarks/reactivity/kairo/kairo_broad.js

@@ -25,12 +25,12 @@ function setup() {
 	return {
 		destroy,
 		run() {
-			$.flush_sync(() => {
+			$.flush(() => {
 				$.set(head, 1);
 			});
 			counter = 0;
 			for (let i = 0; i < 50; i++) {
-				$.flush_sync(() => {
+				$.flush(() => {
 					$.set(head, i);
 				});
 				assert($.get(last) === i + 50);
@@ -51,7 +51,7 @@ export async function kairo_broad_unowned() {
 	const { run, destroy } = setup();
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});
@@ -80,7 +80,7 @@ export async function kairo_broad_owned() {
 	});
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});

benchmarking/benchmarks/reactivity/kairo/kairo_deep.js

@@ -25,12 +25,12 @@ function setup() {
 	return {
 		destroy,
 		run() {
-			$.flush_sync(() => {
+			$.flush(() => {
 				$.set(head, 1);
 			});
 			counter = 0;
 			for (let i = 0; i < iter; i++) {
-				$.flush_sync(() => {
+				$.flush(() => {
 					$.set(head, i);
 				});
 				assert($.get(current) === len + i);
@@ -51,7 +51,7 @@ export async function kairo_deep_unowned() {
 	const { run, destroy } = setup();
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});
@@ -80,7 +80,7 @@ export async function kairo_deep_owned() {
 	});
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});

benchmarking/benchmarks/reactivity/kairo/kairo_diamond.js

@@ -28,13 +28,13 @@ function setup() {
 	return {
 		destroy,
 		run() {
-			$.flush_sync(() => {
+			$.flush(() => {
 				$.set(head, 1);
 			});
 			assert($.get(sum) === 2 * width);
 			counter = 0;
 			for (let i = 0; i < 500; i++) {
-				$.flush_sync(() => {
+				$.flush(() => {
 					$.set(head, i);
 				});
 				assert($.get(sum) === (i + 1) * width);
@@ -55,7 +55,7 @@ export async function kairo_diamond_unowned() {
 	const { run, destroy } = setup();
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});
@@ -84,7 +84,7 @@ export async function kairo_diamond_owned() {
 	});
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});

benchmarking/benchmarks/reactivity/kairo/kairo_mux.js

@@ -22,13 +22,13 @@ function setup() {
 		destroy,
 		run() {
 			for (let i = 0; i < 10; i++) {
-				$.flush_sync(() => {
+				$.flush(() => {
 					$.set(heads[i], i);
 				});
 				assert($.get(splited[i]) === i + 1);
 			}
 			for (let i = 0; i < 10; i++) {
-				$.flush_sync(() => {
+				$.flush(() => {
 					$.set(heads[i], i * 2);
 				});
 				assert($.get(splited[i]) === i * 2 + 1);
@@ -48,7 +48,7 @@ export async function kairo_mux_unowned() {
 	const { run, destroy } = setup();
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});
@@ -77,7 +77,7 @@ export async function kairo_mux_owned() {
 	});
 
 	const { timing } = await fastest_test(10, () => {
-		for (let i = 0; i < 100; i++) {
+		for (let i = 0; i < 1000; i++) {
 			run();
 		}
 	});