dependabot[bot] opened a new pull request, #530: URL: https://github.com/apache/arrow-js/pull/530
Bumps [web-streams-polyfill](https://github.com/MattiasBuelens/web-streams-polyfill) from 3.2.1 to 4.5.1. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/MattiasBuelens/web-streams-polyfill/releases";>web-streams-polyfill's releases</a>.</em></p> <blockquote> <h2>v4.5.1</h2> <ul> <li>💅 Add <code>"sideEffects"</code> to <code>package.json</code>, so bundlers can remove unused imports of <code>web-streams-polyfill</code> and <code>web-streams-polyfill/es5</code>. Only <code>web-streams-polyfill/polyfill</code> and <code>web-streams-polyfill/polyfill/es5</code> are marked as having side effects. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/255";>#255</a>)</li> </ul> <h2>v4.5.0</h2> <ul> <li>🚀 Reduce allocations and promise overhead throughout the implementation. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/237";>#237</a>) <ul> <li><code>reader.closed</code>, <code>writer.closed</code> and <code>writer.ready</code> are now created lazily on first access, and internal promise callbacks are re-used instead of being recreated for every chunk.</li> <li><code>pipeTo()</code>, <code>tee()</code> and async iteration re-use their internal read requests, and <code>pipeTo()</code> no longer creates a promise for every written chunk.</li> <li>Creating a <code>ReadableStream</code> without a <code>pull()</code> method no longer schedules a pull or an extra microtask.</li> <li>These optimizations were inspired by similar work in Node.js: <a href="https://redirect.github.com/nodejs/node/pull/63572";>#63572</a>, <a href="https://redirect.github.com/nodejs/node/pull/63876";>#63876</a>, <a href="https://redirect.github.com/nodejs/node/pull/64320";>#64320</a>, <a href="https://redirect.github.com/nodejs/node/pull/64431";>#64431</a>, <a href="https://redirect.github.com/nodejs/node/pull/64818";>#64818</a>, <a href="https://redirect.github.com/nodejs/node/pull/64890";>#64890</a>, <a href="https://redirect.github.com/nodejs/node/pull/65138";>#65138</a>, <a href="https://redirect.github.com/nodejs/node/pull/65414";>#65414</a>, <a href="https://redirect.github.com/nodejs/node/pull/66052";>#66052</a>, <a href="https://redirect.github.com/nodejs/node/pull/66154";>#66154</a>, <a href="https://redirect.github.com/nodejs/node/pull/66392";>#66392</a>, <a href="https://redirect.github.com/nodejs/node/pull/66424";>#66424</a>.</li> </ul> </li> <li>🐛 Use ESM type definitions (<code>types/ponyfill.d.mts</code>) for the <code>import</code> condition of <code>web-streams-polyfill</code> and <code>web-streams-polyfill/es5</code>, so TypeScript no longer treats them as CommonJS types. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/242";>#242</a>) <ul> <li><code>types/tsdoc-metadata.json</code> is no longer published.</li> </ul> </li> </ul> <h2>v4.4.0</h2> <ul> <li>🐛 Fix memory leak where internal promises kept piling up inside <code>ReadableStream.pipeTo()</code> whenever the destination applies backpressure. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/217";>#217</a>)</li> <li>👓 Reject strings and other non-object values in <code>ReadableStream.from()</code>, as the argument is now converted to an IDL <code>async_sequence</code>. (<a href="https://redirect.github.com/whatwg/streams/pull/1372";>whatwg/streams#1372</a>)</li> </ul> <h2>v4.3.0</h2> <ul> <li>🚀 Optimize reading from a <code>ReadableStream</code> with buffered chunks. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/170";>#170</a>) <ul> <li>When the stream has a chunk available in its internal queue, <code>defaultReader.read()</code> and <code>byobReader.read(view)</code> will now immediately return a resolved promise using <code>Promise.resolve()</code>. This turns out to be (slightly) faster than creating a <code>new Promise</code> and then immediately resolving it.</li> </ul> </li> <li>🚀 Optimize piping from a <code>ReadableStream</code> with buffered chunks. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/170";>#170</a>) <ul> <li>When the stream has one or more chunks available in its internal queue, <code>pipeTo()</code> will now read all available chunks in a single batch and write them to the destination (while still respecting backpressure).</li> <li>These optimizations were <a href="https://github.com/nodejs/node/commit/199daab0b0822d6063a73b9362bfce8667d2a112";>inspired by Node.js</a>.</li> </ul> </li> </ul> <h2>v4.2.0</h2> <ul> <li>👓 Align with <a href="https://github.com/whatwg/streams/tree/080852ccd709e063cc6af239ae07fc040e365179/";>spec version <code>080852c</code></a> (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/161";>#161</a>)</li> </ul> <h2>v4.1.0</h2> <ul> <li>👓 Align with <a href="https://github.com/whatwg/streams/tree/fa4891a35ff05281ff8ed66f8ad447644ea7cec3/";>spec version <code>fa4891a</code></a> (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/156";>#156</a>) <ul> <li>Commit pull-into descriptors <em>after</em> filling them from the internal queue. This prevents an issue where an incorrect BYOB request would temporarily be visible through a patched <code>Object.prototype.then</code>, which broke some internal invariants.</li> <li>The <code>next()</code> and <code>return()</code> methods of <code>ReadableStream</code>'s async iterator are now correctly "chained", such that the promises returned by <em>either</em> of these methods are always resolved in the same order as those methods were called.</li> </ul> </li> <li>💅 Improve type of <code>WritableStreamDefaultController.signal</code>. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/157";>#157</a>)</li> </ul> <h2>v4.0.0</h2> <ul> <li>💥 Rework the list of variants to have more modern defaults. The table below shows how to upgrade your v3 import to their equivalent v4 import. See the <a href="https://github.com/MattiasBuelens/web-streams-polyfill/blob/master/MIGRATING.md";>migration guide</a> for more information. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/issues/82";>#82</a>, <a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/139";>#139</a>)</li> <li>💥 Remove the ES2018 variant, in favor of the ES2015 variant.</li> <li>💥 Switch to <a href="https://nodejs.org/api/packages.html#subpath-exports";>subpath exports</a> for variants. <ul> <li>Node 12 or higher is required to <code>import</code> or <code>require()</code> a variant.</li> <li>When using TypeScript, version 4.7 or higher is now required. Additionally, <a href="https://www.typescriptlang.org/tsconfig#moduleResolution";><code>moduleResolution</code></a> must be set to <code>"node16"</code>, <code>"nodenext"</code> or <code>"bundler"</code>.</li> </ul> </li> <li>🚀 Support <a href="https://nodejs.org/api/esm.html";>importing as ESM in Node</a>.</li> <li>💅 Minify all code in the published package, to reduce the download size.</li> </ul> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/MattiasBuelens/web-streams-polyfill/blob/master/CHANGELOG.md";>web-streams-polyfill's changelog</a>.</em></p> <blockquote> <h2>4.5.1 (2026-11-06)</h2> <ul> <li>💅 Add <code>"sideEffects"</code> to <code>package.json</code>, so bundlers can remove unused imports of <code>web-streams-polyfill</code> and <code>web-streams-polyfill/es5</code>. Only <code>web-streams-polyfill/polyfill</code> and <code>web-streams-polyfill/polyfill/es5</code> are marked as having side effects. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/255";>#255</a>)</li> </ul> <h2>4.5.0 (2026-11-02)</h2> <ul> <li>🚀 Reduce allocations and promise overhead throughout the implementation. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/237";>#237</a>) <ul> <li><code>reader.closed</code>, <code>writer.closed</code> and <code>writer.ready</code> are now created lazily on first access, and internal promise callbacks are re-used instead of being recreated for every chunk.</li> <li><code>pipeTo()</code>, <code>tee()</code> and async iteration re-use their internal read requests, and <code>pipeTo()</code> no longer creates a promise for every written chunk.</li> <li>Creating a <code>ReadableStream</code> without a <code>pull()</code> method no longer schedules a pull or an extra microtask.</li> <li>These optimizations were inspired by similar work in Node.js: <a href="https://redirect.github.com/nodejs/node/pull/63572";>#63572</a>, <a href="https://redirect.github.com/nodejs/node/pull/63876";>#63876</a>, <a href="https://redirect.github.com/nodejs/node/pull/64320";>#64320</a>, <a href="https://redirect.github.com/nodejs/node/pull/64431";>#64431</a>, <a href="https://redirect.github.com/nodejs/node/pull/64818";>#64818</a>, <a href="https://redirect.github.com/nodejs/node/pull/64890";>#64890</a>, <a href="https://redirect.github.com/nodejs/node/pull/65138";>#65138</a>, <a href="https://redirect.github.com/nodejs/node/pull/65414";>#65414</a>, <a href="https://redirect.github.com/nodejs/node/pull/66052";>#66052</a>, <a href="https://redirect.github.com/nodejs/node/pull/66154";>#66154</a>, <a href="https://redirect.github.com/nodejs/node/pull/66392";>#66392</a>, <a href="https://redirect.github.com/nodejs/node/pull/66424";>#66424</a>.</li> </ul> </li> <li>🐛 Use ESM type definitions (<code>types/ponyfill.d.mts</code>) for the <code>import</code> condition of <code>web-streams-polyfill</code> and <code>web-streams-polyfill/es5</code>, so TypeScript no longer treats them as CommonJS types. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/242";>#242</a>) <ul> <li><code>types/tsdoc-metadata.json</code> is no longer published.</li> </ul> </li> </ul> <h2>4.4.0 (2026-11-02)</h2> <ul> <li>🐛 Fix memory leak where internal promises kept piling up inside <code>ReadableStream.pipeTo()</code> whenever the destination applies backpressure. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/217";>#217</a>)</li> <li>👓 Reject strings and other non-object values in <code>ReadableStream.from()</code>, as the argument is now converted to an IDL <code>async_sequence</code>. (<a href="https://redirect.github.com/whatwg/streams/pull/1372";>whatwg/streams#1372</a>)</li> </ul> <h2>4.3.0 (2026-05-15)</h2> <ul> <li>🚀 Optimize reading from a <code>ReadableStream</code> with buffered chunks. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/170";>#170</a>) <ul> <li>When the stream has a chunk available in its internal queue, <code>defaultReader.read()</code> and <code>byobReader.read(view)</code> will now immediately return a resolved promise using <code>Promise.resolve()</code>. This turns out to be (slightly) faster than creating a <code>new Promise</code> and then immediately resolving it.</li> </ul> </li> <li>🚀 Optimize piping from a <code>ReadableStream</code> with buffered chunks. (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/170";>#170</a>) <ul> <li>When the stream has one or more chunks available in its internal queue, <code>pipeTo()</code> will now read all available chunks in a single batch and write them to the destination (while still respecting backpressure).</li> <li>These optimizations were <a href="https://github.com/nodejs/node/commit/199daab0b0822d6063a73b9362bfce8667d2a112";>inspired by Node.js</a>.</li> </ul> </li> </ul> <h2>4.2.0 (2025-08-17)</h2> <ul> <li>👓 Align with <a href="https://github.com/whatwg/streams/tree/080852ccd709e063cc6af239ae07fc040e365179/";>spec version <code>080852c</code></a> (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/161";>#161</a>)</li> </ul> <h2>4.1.0 (2025-01-05)</h2> <ul> <li>👓 Align with <a href="https://github.com/whatwg/streams/tree/fa4891a35ff05281ff8ed66f8ad447644ea7cec3/";>spec version <code>fa4891a</code></a> (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/pull/156";>#156</a>) <ul> <li>Commit pull-into descriptors <em>after</em> filling them from the internal queue. This prevents an issue where an incorrect BYOB request would temporarily be visible through a patched <code>Object.prototype.then</code>, which broke some internal invariants.</li> <li>The <code>next()</code> and <code>return()</code> methods of <code>ReadableStream</code>'s async iterator are now correctly "chained", such that the promises returned by <em>either</em> of these methods are always resolved in the same order as those methods were called.</li> </ul> </li> </ul> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/61a876ca8f93702bbe4243aa00b61fc3d861a9b8";><code>61a876c</code></a> 4.5.1</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/72e3c2fe36fd04e5c72e1c26b33b4d00acf59bd2";><code>72e3c2f</code></a> Draft a GitHub release when a release PR lands (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/issues/259";>#259</a>)</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/71a0a37537d9a21ccf6034671d3f6aa3055065ca";><code>71a0a37</code></a> Bump the development-dependencies group with 4 updates (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/issues/251";>#251</a>)</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/62c0af2f5e25984c4f44de694a80b6791c0f0fcf";><code>62c0af2</code></a> Run browser tests in the Playwright container matching the lockfile (<a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/issues/256";>#256</a>)</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/6852f7e20bacbab8cee315dcb1f4b2939bc037bd";><code>6852f7e</code></a> Merge pull request <a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/issues/255";>#255</a> from retyui/add-side-effects</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/bd49ecedbd1b8503c7d35b5bc3d3f42c83c19120";><code>bd49ece</code></a> Add changelog entry</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/e58bea11df6b718e30c5bac0c67cdf13a64a6fe2";><code>e58bea1</code></a> Declare <code>sideEffects</code> in package.json</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/4ba4d3b65be14203d66a3ef639549d2574f37040";><code>4ba4d3b</code></a> 4.5.0</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/7ce6840299afae8713f0fb0670765ebb0bd31cc3";><code>7ce6840</code></a> Merge pull request <a href="https://redirect.github.com/MattiasBuelens/web-streams-polyfill/issues/242";>#242</a> from MattiasBuelens/claude/project-thread-xpot05</li> <li><a href="https://github.com/MattiasBuelens/web-streams-polyfill/commit/3e68ff3a5587d11d8efcb658aa722fad4ec41cbb";><code>3e68ff3</code></a> Drop type casts in build plugins</li> <li>Additional commits viewable in <a href="https://github.com/MattiasBuelens/web-streams-polyfill/compare/v3.2.1...v4.5.1";>compare view</a></li> </ul> </details> <details> <summary>Maintainer changes</summary> <p>This version was pushed to npm by <a href="https://www.npmjs.com/~GitHub%20Actions";>GitHub Actions</a>, a new releaser for web-streams-polyfill since your current version.</p> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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