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🚀 Experimental Features

cache: Add opt-out on a plugin level, fix internal root cache - by @sheremet-va in #9154 (a68f7)
reporters: Print import duration breakdown - by @sheremet-va in #9105 (122ff)

🐞 Bug Fixes

Keep built-in id as is in bun and deno - by @sheremet-va in #9117 (075ab)
Use optimizeDeps.rolldownOptions to fix depreated warning + fix ssr.external: true - by @hi-ogawa in #9121 (fd8bd)
Fix external behavior with deps.optimizer - by @hi-ogawa in #9125 (4c754)
Very minor typo in "Chrome DevTools Protocol" - by @HowToTestFrontend in #9146 (20997)
browser: Run toMatchScreenshot only once when used with expect.element - by @macarie in #9132 (0d2e7)
coverage: Istanbul provider to not break source maps - by @AriPerkkio in #9040 (e4ca9)
deps: Update dependency tinyexec to v1 - in #9122 (fd786)
docs: Remove --browser.provider from docs - by @sheremet-va in #9115 (120b3)
expect: Preserve currentTestName in extended matchers - by @macarie in #9106 (e4345)
pool: Terminate workers on CTRL+c forceful exits - by @AriPerkkio in #9140 (d57d8)
reporters: Show project in github reporter - by @sheremet-va in #9138 (bb65e)
spy: Do not mock overriden method, if parent was automocked - by @sheremet-va in #9116 (1a246)
web-worker: MessagePort objects passed to Worker.postMessage work when clone === "native" - by @whitphx in #9118 (deee8)

View changes on GitHub

`v4.0.14`

🚀 Experimental Features

browser: Expose utils.configurePrettyDOM - by @sheremet-va in #9103 (2cc34)
runner: Add full names to tasks - by @macarie in #9087 (821aa)
ui: Add tabbed failure view for toMatchScreenshot with comparison slider - by @macarie in #8813 (c37c2)

🐞 Bug Fixes

Externalize before caching - by @sheremet-va in #9077 (e1b2e)
Collect the duration of external imports - by @sheremet-va in #9097 (3326c)
Rename collect to import, remove prepare - by @sheremet-va in #9091 (1256b)
browser:
- Unsubscribe onCancel on rpc destroy - by @AriPerkkio in #9088 (f5b72)
- Revert the viewport scaling in non-ui mode #9018 - by @sheremet-va in #9072 and #9018 (64502)
coverage:
- Invalidate circular modules correctly on rerun with coverage - by @aicest in #9096 (6f22c)
expect:
- Allow function as standard schema - by @hi-ogawa in #9099 (ed8a2)
jsdom:
- Reuse abort signals if possible - by @sheremet-va in #9090 (2c468)
pool:
- Init VITEST_POOL_ID + VITEST_WORKER_ID before environment setup - by @AriPerkkio in #9085 (37918)
web-worker:
- postMessage to send ports to workers - by @whitphx and @AriPerkkio in #9078 (9d176)

🏎 Performance

Replace debug with obug - by @sxzz and @AriPerkkio in #9057 (acc51)

View changes on GitHub

`v4.0.13`

🐞 Bug Fixes

types:
- Don't use type from Vite 7.1 - by @sheremet-va in #9071 (6356b)
- Don't import node.js dependent types in vitest/browser - by @sheremet-va in #9068 (332af)

🏎 Performance

Avoid fetchModule roundtrip if the module is cached - by @sheremet-va in #9075 (b27e0)
experimental: If fsCacheModule is enabled, read from the memory when possible - by @sheremet-va in #9076 (6b9a1)

View changes on GitHub

`v4.0.12`

🐞 Bug Fixes

Inherit fsModuleCachePath by default - by @sheremet-va in #9063 (9a8bc)
Don't import from @opentelemetry/api in public types - by @sheremet-va in #9066 (e944a)

View changes on GitHub

`v4.0.11`

🚀 Experimental Features

api: Add extensible test artifact API - by @macarie in #8987 (77292)
- See more at https://vitest.dev/api/advanced/artifacts
expect: Provide task in MatchState - by @macarie in #9022 (afd1f)
experimental: Support OpenTelemetry traces - by @sheremet-va in #8994 (d6d33)
- See more at https://vitest.dev/guide/open-telemetry

🏎 Performance

experimental: Add file system cache - by @sheremet-va in #9026 (1b147)
- See more at https://vitest.dev/config/experimental#experimental-fsmodulecache

View changes on GitHub

`v4.0.10`

🐞 Bug Fixes

Remove onCancel when worker is terminated - by @sheremet-va in #9033 (6d7f0)
browser:
- Don't scale the iframe if UI is disabled - by @sheremet-va in #9018 (5406e)
- Handle dependency stack traces with external source maps. Resolves: #9003 - by @iclectic in #9016 and #9003 (57ae5)
bun:
- Parsing of stack trace for bun runtime - by @nazarhussain in #9032 (f3ec6)
core:
- Prevent starting new run when cancelling - by @AriPerkkio in #8991 (eb98d)
pool:
- Prevent writing to closed worker - by @AriPerkkio and @sheremet-va in #9023 (042c6)
reporters:
- Report correct test run duration at the end - by @sheremet-va in #8969 (bc3a6)
ui:
- Use execution time from ws reporter (onFinished) - by @userquin in #8975 (f56dc)

View changes on GitHub

`v4.0.9`

🚀 Experimental Features

expect: Add Set support to toBeOneOf - by @tim-we and @sheremet-va in #8906 (a415d)

🐞 Bug Fixes

browser: Add favicon icons to the browser mode ui - by @userquin in #8972 (353ee)
forks: Increase worker start timeout - by @AriPerkkio in #9027 (5e750)
jsdom: Cloned request is an instance of Request - by @sheremet-va in #8985 (506a9)
ui: Collect file/suite/test duration correctly - by @userquin in #8976 (8016d)

View changes on GitHub

`v4.0.8`

🐞 Bug Fixes

Workaround noExternal merging bug on Vite 6 - by @hi-ogawa in #8950 (bcb13)
Missed context.d.ts file - by @termorey in #8965 (9044d)
Incorrect error message for non-awaited expect.element() - by @StyleShit in #8954 (9638d)
browser: Cleanup frame-ancestors from CSP header at coverage middleware - by @userquin in #8941 (1f730)
deps: Update all non-major dependencies - by @sheremet-va in #8636 (da8b9)
forks: Do not fail with Windows Defender enabled - by @sheremet-va in #8967 (c79f4)
runner: Properly encode Uint8Array body in annotations - by @Livan-pro in #8951 (997ca)
spy: Copy static properties if spy is initialised with vi.fn(), fix types for vi.spyOn(obj, class) - by @sheremet-va in #8956 (75e7f)
webdriverio: When no argument is passed to the .click interaction command, the webdriver command should also have no argument - by @julienw in #8937 (069e6)

View changes on GitHub

`v4.0.7`

🐞 Bug Fixes

Bind process in case global is overwritten - by @AriPerkkio in #8916 (6240d)
Create environment once per worker with isolate: false - by @sheremet-va in #8915 (c9078)
Add Locator as a possible element type in toContainElement() matcher - by @vitalybaev in #8910 and #8927 (35a27)
browser: Inherit isolate option, deprecate browser.isolate/browser.fileParallelism - by @sheremet-va in #8890 (9d2b4)
cli: Parse --execArgv as array - by @AriPerkkio in #8924 (751c3)
jsdom: Support URL.createObjectURL, FormData.set(prop, blob) - by @sheremet-va in #8935 (a1b73)
pool: Avoid --require argument when running in deno - by @pi0 in #8897 (d41fa)
typecheck: Handle re-runs outside tsc - by @AriPerkkio in #8920 (fdb2e)

🏎 Performance

pool:
- Sort test files by project by default - by @AriPerkkio in #8914 (680a6)
reporters:
- Optimize getting the tests stats - by @Connormiha in #8908 (06d62)
- Remove unnecessary Array.from call - by @Connormiha in #8907 (b6014)

View changes on GitHub

evanw/esbuild (esbuild)

`v0.27.1`

Fix bundler bug with var nested inside if (#4348)

This release fixes a bug with the bundler that happens when importing an ES module using require (which causes it to be wrapped) and there's a top-level var inside an if statement without being wrapped in a { ... } block (and a few other conditions). The bundling transform needed to hoist these var declarations outside of the lazy ES module wrapper for correctness. See the issue for details.
Fix minifier bug with for inside try inside label (#4351)

This fixes an old regression from version v0.21.4. Some code was introduced to move the label inside the try statement to address a problem with transforming labeled for await loops to avoid the await (the transformation involves converting the for await loop into a for loop and wrapping it in a try statement). However, it introduces problems for cross-compiled JVM code that uses all three of these features heavily. This release restricts this transform to only apply to for loops that esbuild itself generates internally as part of the for await transform. Here is an example of some affected code:
```
// Original code
d: {
  e: {
    try {
      while (1) { break d }
    } catch { break e; }
  }
}

// Old output (with --minify)
a:try{e:for(;;)break a}catch{break e}

// New output (with --minify)
a:e:try{for(;;)break a}catch{break e}
```

Inline IIFEs containing a single expression (#4354)

Previously inlining of IIFEs (immediately-invoked function expressions) only worked if the body contained a single return statement. Now it should also work if the body contains a single expression statement instead:

// Original code
const foo = () => {
  const cb = () => {
    console.log(x())
  }
  return cb()
}

// Old output (with --minify)
const foo=()=>(()=>{console.log(x())})();

// New output (with --minify)
const foo=()=>{console.log(x())};

The minifier now strips empty finally clauses (#4353)

This improvement means that finally clauses containing dead code can potentially cause the associated try statement to be removed from the output entirely in minified builds:

// Original code
function foo(callback) {
  if (DEBUG) stack.push(callback.name);
  try {
    callback();
  } finally {
    if (DEBUG) stack.pop();
  }
}

// Old output (with --minify --define:DEBUG=false)
function foo(a){try{a()}finally{}}

// New output (with --minify --define:DEBUG=false)
function foo(a){a()}

Allow tree-shaking of the Symbol constructor

With this release, calling Symbol is now considered to be side-effect free when the argument is known to be a primitive value. This means esbuild can now tree-shake module-level symbol variables:

// Original code
const a = Symbol('foo')
const b = Symbol(bar)

// Old output (with --tree-shaking=true)
const a = Symbol("foo");
const b = Symbol(bar);

// New output (with --tree-shaking=true)
const b = Symbol(bar);

`v0.27.0`

This release deliberately contains backwards-incompatible changes. To avoid automatically picking up releases like this, you should either be pinning the exact version of esbuild in your package.json file (recommended) or be using a version range syntax that only accepts patch upgrades such as ^0.26.0 or ~0.26.0. See npm's documentation about semver for more information.

Use Uint8Array.fromBase64 if available (#4286)

With this release, esbuild's binary loader will now use the new Uint8Array.fromBase64 function unless it's unavailable in the configured target environment. If it's unavailable, esbuild's previous code for this will be used as a fallback. Note that this means you may now need to specify target when using this feature with Node (for example --target=node22) unless you're using Node v25+.
Update the Go compiler from v1.23.12 to v1.25.4 (#4208, #4311)

This raises the operating system requirements for running esbuild:
- Linux: now requires a kernel version of 3.2 or later
- macOS: now requires macOS 12 (Monterey) or later

`v0.26.0`

Enable trusted publishing (#4281)

GitHub and npm are recommending that maintainers for packages such as esbuild switch to trusted publishing. With this release, a VM on GitHub will now build and publish all of esbuild's packages to npm instead of me. In theory.

Unfortunately there isn't really a way to test that this works other than to do it live. So this release is that live test. Hopefully this release is uneventful and is exactly the same as the previous one (well, except for the green provenance attestation checkmark on npm that happens with trusted publishing).

eslint/eslint (eslint)

`v9.39.1`

unjs/obuild (obuild)

`v0.4.7`

💅 Refactors

rolldown: Use dist/_chunks for chunks (c1c8877)

❤️ Contributors

Pooya Parsa (@pi0)

`v0.4.6`

🚀 Enhancements

rolldown: Use dist/_libs for bundled dependencies (ec8c3fe)

❤️ Contributors

Pooya Parsa (@pi0)

`v0.4.5`

🩹 Fixes

rolldown: Default platform to node (439b03a)

🏡 Chore

Update deps (3a9d8e6)

❤️ Contributors

Pooya Parsa (@pi0)

`v0.4.4`

🏡 Chore

Update deps (75e8450)

❤️ Contributors

Pooya Parsa (@pi0)

`v0.4.3`

🏡 Chore

Update oxc (6256796)

❤️ Contributors

Pooya Parsa (@pi0)

`v0.4.2`

🏡 Chore

Update oxc to 0.98 (14a7ab3)

❤️ Contributors

Pooya Parsa (@pi0)

`v0.4.1`

🏡 Chore

Fix release script (8c2ef1e)

❤️ Contributors

Pooya Parsa (@pi0)

`v0.4.0`

🚀 Enhancements

⚠️ Stub transform with individual links (#60)

🩹 Fixes

Correctly apply transform filter hook (eee3f4d)

🏡 Chore

release: V0.3.2 (4ed245e)
Update deps (dd4b400)
Add .prettierignore file (#59)

⚠️ Breaking Changes

⚠️ Stub transform with individual links (#60)

❤️ Contributors

Abeer0 (@iiio2)
Pooya Parsa (@pi0)

pnpm/pnpm (pnpm)

`v10.24.0`

`v10.23.0`: pnpm 10.23

Minor Changes

Added --lockfile-only option to pnpm list #10020.

Patch Changes

pnpm self-update should download pnpm from the configured npm registry #10205.
pnpm self-update should always install the non-executable pnpm package (pnpm in the registry) and never the @pnpm/exe package, when installing v11 or newer. We currently cannot ship @pnpm/exe as pkg doesn't work with ESM #10190.
Node.js runtime is not added to "dependencies" on pnpm add, if there's a engines.runtime setting declared in package.json #10209.
The installation should fail if an optional dependency cannot be installed due to a trust policy check failure #10208.
pnpm list and pnpm why now display npm: protocol for aliased packages (e.g., foo npm:is-odd@3.0.1) #8660.
Don't add an extra slash to the Node.js mirror URL #10204.
pnpm store prune should not fail if the store contains Node.js packages #10131.

Platinum Sponsors

Gold Sponsors

`v10.22.0`: pnpm 10.22

Minor Changes

Added support for trustPolicyExclude #10164.

You can now list one or more specific packages or versions that pnpm should allow to install, even if those packages don't satisfy the trust policy requirement. For example:
```
trustPolicy: no-downgrade
trustPolicyExclude:
  - chokidar@4.0.3
  - webpack@4.47.0 || 5.102.1
```
Allow to override the engines field on publish by the publishConfig.engines field.

Patch Changes

Don't crash when two processes of pnpm are hardlinking the contents of a directory to the same destination simultaneously #10179.

Platinum Sponsors

Gold Sponsors

`v10.21.0`

prettier/prettier (prettier)

`v3.7.4`

LWC: Avoid quote around interpolations (#18383 by @kovsu)

<!-- Input -->
<div foo={bar}>   </div>

<!-- Prettier 3.7.3 (--embedded-language-formatting off) -->
<div foo="{bar}"></div>

<!-- Prettier 3.7.4 (--embedded-language-formatting off) -->
<div foo={bar}></div>

TypeScript: Fix comment inside union type gets duplicated (#18393 by @fisker)

// Input
type Foo = (/** comment */ a | b) | c;

// Prettier 3.7.3
type Foo = /** comment */ (/** comment */ a | b) | c;

// Prettier 3.7.4
type Foo = /** comment */ (a | b) | c;

TypeScript: Fix unstable comment print in union type comments (#18395 by @fisker)

// Input
type X = (A | B) & (
  // comment
  A | B
);

// Prettier 3.7.3 (first format)
type X = (A | B) &
  (// comment
  A | B);

// Prettier 3.7.3 (second format)
type X = (
  | A
  | B // comment
) &
  (A | B);

// Prettier 3.7.4
type X = (A | B) &
  // comment
  (A | B);

`v3.7.3`

API: Fix `prettier.getFileInfo()` change that breaks VSCode extension (#18375 by @fisker)

An internal refactor accidentally broke the VSCode extension plugin loading.

`v3.7.2`

JavaScript: Fix string print when switching quotes (#18351 by @fisker)

// Input
console.log("A descriptor\\'s .kind must be \"method\" or \"field\".")

// Prettier 3.7.1
console.log('A descriptor\\'s .kind must be "method" or "field".');

// Prettier 3.7.2
console.log('A descriptor\\\'s .kind must be "method" or "field".');

JavaScript: Preserve quote for embedded HTML attribute values (#18352 by @kovsu)

// Input
const html = /* HTML */ ` <div class="${styles.banner}"></div> `;

// Prettier 3.7.1
const html = /* HTML */ ` <div class=${styles.banner}></div> `;

// Prettier 3.7.2
const html = /* HTML */ ` <div class="${styles.banner}"></div> `;

TypeScript: Fix comment in empty type literal (#18364 by @fisker)

// Input
export type XXX = {
  // tbd
};

// Prettier 3.7.1
export type XXX = { // tbd };

// Prettier 3.7.2
export type XXX = {
  // tbd
};

`v3.7.1`

API: Fix performance regression in doc printer (#18342 by @fisker)

Prettier 3.7.1 can be very slow when formatting big files, the regression has been fixed.

`v3.7.0`

🔗 Release Notes

h3js/rou3 (rou3-latest)

`v0.7.10`