# Apache Arrow JS changelog

> The JavaScript implementation of the Arrow columnar in-memory format.

- Vendor: Apache
- Category: Databases & Data
- Official site: https://arrow.apache.org/docs/js/
- Tracked by: What's New (https://whatsnew.fyi/product/apache-arrow-js)
- Harvested from: GitHub (apache/arrow-js)
- Entries below: 6 (newest first)

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

## Releases

### v21.2.0 — Apache Arrow JS 21.2.0

- Date: 2026-07-21
- Version: v21.2.0
- Original notes: https://github.com/apache/arrow-js/releases/tag/v21.2.0
- Permalink: https://whatsnew.fyi/product/apache-arrow-js/releases/v21.2.0

- **added** — Add support for BinaryView and Utf8View types
- **fixed** — Fix precision loss in IntervalMonthDayNano nanosecond
- **fixed** — Resolve TS2352 type error in MapBuilder for TypeScript 5.6+

##### What's Changed
* chore: bump memfs from 4.39.0 to 4.48.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/301
* chore: bump @types/node from 24.5.2 to 24.7.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/304
* chore: bump google-closure-compiler from 20250903.0.0 to 20251001.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/303
* chore: bump typescript-eslint from 8.45.0 to 8.46.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/306
* chore: bump del from 8.0.0 to 8.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/307
* chore: bump @rollup/plugin-node-resolve from 16.0.1 to 16.0.3 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/312
* chore: bump webpack from 5.102.0 to 5.102.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/313
* chore: bump actions/setup-node from 5.0.0 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/314
* chore: bump actions/download-artifact from 5.0.0 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/316
* chore: bump actions/upload-artifact from 4.6.2 to 5.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/317
* chore: bump @types/node from 24.7.0 to 24.9.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/318
* chore: bump memfs from 4.48.1 to 4.49.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/319
* fix: Fix precision loss in IntervalMonthDayNano nanosecond by @GeorgeLeePatterson in https://github.com/apache/arrow-js/pull/321
* chore: bump del-cli from 6.0.0 to 7.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/328
* chore: bump eslint from 9.36.0 to 9.39.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/331
* chore: bump actions/checkout from 5.0.0 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/338
* chore: bump glob from 11.0.3 to 12.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/335
* chore: Use relative link for LICENSE.txt by @Divyanshu-s13 in https://github.com/apache/arrow-js/pull/339
* feat: Add support for BinaryView and Utf8View types by @GeorgeLeePatterson in https://github.com/apache/arrow-js/pull/320
* chore: bump actions/checkout from 5.0.1 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/343
* chore: bump webpack-bundle-analyzer from 4.10.2 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/342
* chore: bump webpack from 5.102.1 to 5.103.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/345
* chore: bump esbuild from 0.25.10 to 0.27.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/332
* chore: bump actions/setup-python from 6.0.0 to 6.1.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/347
* chore: bump actions/setup-node from 6.0.0 to 6.1.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/348
* chore: bump glob from 12.0.0 to 13.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/350
* chore: bump typescript-eslint from 8.46.1 to 8.49.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/351
* chore: bump actions/checkout from 6.0.0 to 6.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/349
* chore: bump actions/cache from 4.3.0 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/352
* chore: bump actions/upload-artifact from 5.0.0 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/353
* chore: bump actions/download-artifact from 6.0.0 to 7.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/354
* chore: bump typescript-eslint from 8.49.0 to 8.50.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/355
* chore: bump @rollup/plugin-alias from 5.1.1 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/356
* chore: bump eslint-plugin-jest from 29.0.1 to 29.9.0 by @dependabot[bot]

_[Truncated at 4000 characters — full notes: https://github.com/apache/arrow-js/releases/tag/v21.2.0]_

### v21.2.0-rc1 — Apache Arrow JS 21.2.0 RC1

- Date: 2026-07-17
- Version: v21.2.0-rc1
- Original notes: https://github.com/apache/arrow-js/releases/tag/v21.2.0-rc1
- Permalink: https://whatsnew.fyi/product/apache-arrow-js/releases/v21.2.0-rc1
- Labels: Pre-release

- **added** — Add support for BinaryView and Utf8View types
- **fixed** — Fix precision loss in IntervalMonthDayNano nanosecond
- **fixed** — Resolve TS2352 type error in MapBuilder for TypeScript 5.6+

##### What's Changed
* chore: bump memfs from 4.39.0 to 4.48.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/301
* chore: bump @types/node from 24.5.2 to 24.7.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/304
* chore: bump google-closure-compiler from 20250903.0.0 to 20251001.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/303
* chore: bump typescript-eslint from 8.45.0 to 8.46.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/306
* chore: bump del from 8.0.0 to 8.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/307
* chore: bump @rollup/plugin-node-resolve from 16.0.1 to 16.0.3 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/312
* chore: bump webpack from 5.102.0 to 5.102.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/313
* chore: bump actions/setup-node from 5.0.0 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/314
* chore: bump actions/download-artifact from 5.0.0 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/316
* chore: bump actions/upload-artifact from 4.6.2 to 5.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/317
* chore: bump @types/node from 24.7.0 to 24.9.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/318
* chore: bump memfs from 4.48.1 to 4.49.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/319
* fix: Fix precision loss in IntervalMonthDayNano nanosecond by @GeorgeLeePatterson in https://github.com/apache/arrow-js/pull/321
* chore: bump del-cli from 6.0.0 to 7.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/328
* chore: bump eslint from 9.36.0 to 9.39.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/331
* chore: bump actions/checkout from 5.0.0 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/338
* chore: bump glob from 11.0.3 to 12.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/335
* chore: Use relative link for LICENSE.txt by @Divyanshu-s13 in https://github.com/apache/arrow-js/pull/339
* feat: Add support for BinaryView and Utf8View types by @GeorgeLeePatterson in https://github.com/apache/arrow-js/pull/320
* chore: bump actions/checkout from 5.0.1 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/343
* chore: bump webpack-bundle-analyzer from 4.10.2 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/342
* chore: bump webpack from 5.102.1 to 5.103.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/345
* chore: bump esbuild from 0.25.10 to 0.27.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/332
* chore: bump actions/setup-python from 6.0.0 to 6.1.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/347
* chore: bump actions/setup-node from 6.0.0 to 6.1.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/348
* chore: bump glob from 12.0.0 to 13.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/350
* chore: bump typescript-eslint from 8.46.1 to 8.49.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/351
* chore: bump actions/checkout from 6.0.0 to 6.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/349
* chore: bump actions/cache from 4.3.0 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/352
* chore: bump actions/upload-artifact from 5.0.0 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/353
* chore: bump actions/download-artifact from 6.0.0 to 7.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/354
* chore: bump typescript-eslint from 8.49.0 to 8.50.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/355
* chore: bump @rollup/plugin-alias from 5.1.1 to 6.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/356
* chore: bump eslint-plugin-jest from 29.0.1 to 29.9.0 by @dependabot[bot]

_[Truncated at 4000 characters — full notes: https://github.com/apache/arrow-js/releases/tag/v21.2.0-rc1]_

### v21.1.0 — Apache Arrow JS 21.1.0

- Date: 2025-10-07
- Version: v21.1.0
- Original notes: https://github.com/apache/arrow-js/releases/tag/v21.1.0
- Permalink: https://whatsnew.fyi/product/apache-arrow-js/releases/v21.1.0

- **changed** — Use swc-node instead of ts-node
- **fixed** — Fix license path in README
- **changed** — Add missing discussions: write permission to release job

##### What's Changed
* chore: bump gulp from 4.0.2 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/133
* chore: Generate draft announce email by @kou in https://github.com/apache/arrow-js/pull/194
* chore: Start release announce discussion automatically by @kou in https://github.com/apache/arrow-js/pull/196
* chore: bump esbuild from 0.25.5 to 0.25.6 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/197
* chore: bump google-closure-compiler from 20250625.0.0 to 20250701.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/198
* chore: bump @types/node from 24.0.3 to 24.0.10 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/199
* chore: bump typescript-eslint from 8.35.1 to 8.36.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/200
* chore: bump rollup from 4.44.1 to 4.44.2 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/202
* chore: bump eslint from 9.30.0 to 9.30.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/201
* chore: bump rollup from 4.44.2 to 4.45.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/206
* chore: bump @swc/core from 1.12.7 to 1.12.14 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/208
* chore: bump eslint from 9.30.1 to 9.31.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/207
* chore: bump typescript-eslint from 8.36.0 to 8.37.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/210
* chore: bump @types/node from 24.0.10 to 24.0.13 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/209
* chore: bump google-closure-compiler from 20250701.0.0 to 20250709.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/211
* chore: bump webpack from 5.99.9 to 5.100.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/212
* chore: bump typescript-eslint from 8.37.0 to 8.38.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/214
* chore: bump @types/node from 24.0.13 to 24.0.15 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/215
* chore: bump esbuild from 0.25.6 to 0.25.8 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/217
* chore: bump braces from 3.0.2 to 3.0.3 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/218
* chore: bump google-closure-compiler from 20250709.0.0 to 20250716.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/213
* chore: bump @swc/core from 1.12.14 to 1.13.2 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/220
* chore: bump cross-env from 7.0.3 to 10.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/222
* chore: bump google-closure-compiler from 20250716.0.0 to 20250723.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/223
* chore: bump memfs from 4.17.2 to 4.23.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/221
* chore: Use swc-node instead of ts-node by @kou in https://github.com/apache/arrow-js/pull/224
* chore: Fix license path in README by @operagxsasha in https://github.com/apache/arrow-js/pull/226
* chore: bump eslint from 9.31.0 to 9.32.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/230
* chore: bump @types/node from 24.0.15 to 24.2.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/229
* chore: bump typescript-eslint from 8.38.0 to 8.39.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/228
* chore: bump webpack from 5.100.1 to 5.101.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/231
* chore: bump actions/download-artifact from 4.3.0 to 5.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/234
* chore: bump eslint from 9.32.0 to 9.33.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/235
* chore: bump typedoc from 0.28.7 to 0.28.10 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/236
* chore: bump actions/checkout from 4.2.2 to 5.0.0 by @dependa

_[Truncated at 4000 characters — full notes: https://github.com/apache/arrow-js/releases/tag/v21.1.0]_

### v21.1.0-rc0 — Apache Arrow JS 21.1.0 RC0

- Date: 2025-10-01
- Version: v21.1.0-rc0
- Original notes: https://github.com/apache/arrow-js/releases/tag/v21.1.0-rc0
- Permalink: https://whatsnew.fyi/product/apache-arrow-js/releases/v21.1.0-rc0
- Labels: Pre-release

- **changed** — Use swc-node instead of ts-node
- **fixed** — Fix license path in README
- **changed** — Add missing `discussions: write` permission to release job

##### What's Changed
* chore: bump gulp from 4.0.2 to 5.0.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/133
* chore: Generate draft announce email by @kou in https://github.com/apache/arrow-js/pull/194
* chore: Start release announce discussion automatically by @kou in https://github.com/apache/arrow-js/pull/196
* chore: bump esbuild from 0.25.5 to 0.25.6 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/197
* chore: bump google-closure-compiler from 20250625.0.0 to 20250701.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/198
* chore: bump @types/node from 24.0.3 to 24.0.10 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/199
* chore: bump typescript-eslint from 8.35.1 to 8.36.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/200
* chore: bump rollup from 4.44.1 to 4.44.2 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/202
* chore: bump eslint from 9.30.0 to 9.30.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/201
* chore: bump rollup from 4.44.2 to 4.45.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/206
* chore: bump @swc/core from 1.12.7 to 1.12.14 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/208
* chore: bump eslint from 9.30.1 to 9.31.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/207
* chore: bump typescript-eslint from 8.36.0 to 8.37.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/210
* chore: bump @types/node from 24.0.10 to 24.0.13 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/209
* chore: bump google-closure-compiler from 20250701.0.0 to 20250709.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/211
* chore: bump webpack from 5.99.9 to 5.100.1 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/212
* chore: bump typescript-eslint from 8.37.0 to 8.38.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/214
* chore: bump @types/node from 24.0.13 to 24.0.15 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/215
* chore: bump esbuild from 0.25.6 to 0.25.8 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/217
* chore: bump braces from 3.0.2 to 3.0.3 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/218
* chore: bump google-closure-compiler from 20250709.0.0 to 20250716.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/213
* chore: bump @swc/core from 1.12.14 to 1.13.2 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/220
* chore: bump cross-env from 7.0.3 to 10.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/222
* chore: bump google-closure-compiler from 20250716.0.0 to 20250723.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/223
* chore: bump memfs from 4.17.2 to 4.23.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/221
* chore: Use swc-node instead of ts-node by @kou in https://github.com/apache/arrow-js/pull/224
* chore: Fix license path in README by @operagxsasha in https://github.com/apache/arrow-js/pull/226
* chore: bump eslint from 9.31.0 to 9.32.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/230
* chore: bump @types/node from 24.0.15 to 24.2.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/229
* chore: bump typescript-eslint from 8.38.0 to 8.39.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/228
* chore: bump webpack from 5.100.1 to 5.101.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/231
* chore: bump actions/download-artifact from 4.3.0 to 5.0.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/234
* chore: bump eslint from 9.32.0 to 9.33.0 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/235
* chore: bump typedoc from 0.28.7 to 0.28.10 by @dependabot[bot] in https://github.com/apache/arrow-js/pull/236
* chore: bump actions/checkout from 4.2.2 to 5.0.0 by @dependa

_[Truncated at 4000 characters — full notes: https://github.com/apache/arrow-js/releases/tag/v21.1.0-rc0]_

### v21.0.0 — Apache Arrow JS 21.0.0

- Date: 2025-07-04
- Version: v21.0.0
- Original notes: https://github.com/apache/arrow-js/releases/tag/v21.0.0
- Permalink: https://whatsnew.fyi/product/apache-arrow-js/releases/v21.0.0

- **added** — Add LICENSE.txt and NOTICE.txt
- **added** — Add .github/ISSUE_TEMPLATE
- **added** — Add pull request template
- **added** — Add CODE_OF_CONDUCT.md
- **added** — Add CONTRIBUTING.md
- **added** — Add shfmt and shellcheck linters
- **changed** — Enable CI
- **changed** — Use the PR title and description by default for squash and merge
- **changed** — Move config.yaml to config.yml
- **changed** — Enable Dependabot
- **changed** — Enable integration tests
- **changed** — Migrate ESLint 8 to 9
- **changed** — Run Release Audit Tool in CI
- **changed** — Update repository URLs
- **changed** — Use Node.js 20
- **changed** — Publish docs
- **removed** — Remove lerna from package.json
- **removed** — Remove create:testdata and clean:testdata from package.json
- **removed** — Remove xml2js dependency

##### What's Changed
* Add LICENSE.txt and NOTICE.txt by @kou in https://github.com/apache/arrow-js/pull/12
* Enable CI by @kou in https://github.com/apache/arrow-js/pull/18
* GH-7: Add .github/ISSUE_TEMPLATE by @raulcd in https://github.com/apache/arrow-js/pull/16
* Use the PR title and description by default for squash and merge by @kou in https://github.com/apache/arrow-js/pull/20
* Move config.yaml.to config.yml by @raulcd in https://github.com/apache/arrow-js/pull/21
* Enable Dependabot by @kou in https://github.com/apache/arrow-js/pull/22
* chore: bump memfs from 4.17.0 to 4.17.2 by @dependabot in https://github.com/apache/arrow-js/pull/24
* chore: bump flatbuffers from 25.1.24 to 25.2.10 by @dependabot in https://github.com/apache/arrow-js/pull/25
* chore: bump @types/node from 20.14.9 to 22.15.21 by @dependabot in https://github.com/apache/arrow-js/pull/28
* chore: bump typedoc from 0.27.9 to 0.28.4 by @dependabot in https://github.com/apache/arrow-js/pull/29
* chore: bump gulp-esbuild from 0.13.0 to 0.14.0 by @dependabot in https://github.com/apache/arrow-js/pull/32
* chore: bump rollup from 4.24.3 to 4.41.0 by @dependabot in https://github.com/apache/arrow-js/pull/31
* chore: Add pull request template by @kou in https://github.com/apache/arrow-js/pull/33
* chore: Enable integration tests by @kou in https://github.com/apache/arrow-js/pull/34
* chore: bump typedoc from 0.28.4 to 0.28.5 by @dependabot in https://github.com/apache/arrow-js/pull/37
* chore: bump @swc/core from 1.6.6 to 1.11.29 by @dependabot in https://github.com/apache/arrow-js/pull/38
* chore: bump webpack from 5.96.1 to 5.99.9 by @dependabot in https://github.com/apache/arrow-js/pull/40
* chore: bump actions/setup-python from 5.3.0 to 5.6.0 by @dependabot in https://github.com/apache/arrow-js/pull/43
* chore: bump @rollup/plugin-node-resolve from 16.0.0 to 16.0.1 by @dependabot in https://github.com/apache/arrow-js/pull/39
* chore: bump @types/jest from 29.5.12 to 29.5.14 by @dependabot in https://github.com/apache/arrow-js/pull/42
* chore: Migrate ESLint 8 to 9 by @kou in https://github.com/apache/arrow-js/pull/128
* chore: Run Release Audit Tool in CI by @kou in https://github.com/apache/arrow-js/pull/129
* chore: bump @swc/helpers from 0.5.15 to 0.5.17 by @dependabot in https://github.com/apache/arrow-js/pull/131
* chore: bump typescript-eslint from 8.32.1 to 8.33.1 by @dependabot in https://github.com/apache/arrow-js/pull/132
* chore: bump esbuild from 0.25.0 to 0.25.5 by @dependabot in https://github.com/apache/arrow-js/pull/134
* chore: Add CODE_OF_CONDUCT.md by @kou in https://github.com/apache/arrow-js/pull/141
* chore: bump rollup from 4.41.0 to 4.42.0 by @dependabot in https://github.com/apache/arrow-js/pull/150
* chore: bump eslint from 9.27.0 to 9.28.0 by @dependabot in https://github.com/apache/arrow-js/pull/151
* chore: bump @swc/core from 1.11.29 to 1.11.31 by @dependabot in https://github.com/apache/arrow-js/pull/152
* Prepare release scripts by @kou in https://github.com/apache/arrow-js/pull/137
* chore: Update repository URLs by @kou in https://github.com/apache/arrow-js/pull/146
* chore: Add CONTRIBUTING.md by @kou in https://github.com/apache/arrow-js/pull/142
* chore: Remove `lerna` from `package.json` by @kou in https://github.com/apache/arrow-js/pull/144
* chore: Remove `create:testdata`/`clean:testdata` in `package.json` by @kou in https://github.com/apache/arrow-js/pull/148
* chore: bump google-closure-compiler from 20240317.0.0 to 20250603.0.0 by @dependabot in https://github.com/apache/arrow-js/pull/149
* chore: Remove xml2js dependency by @kou in https://github.com/apache/arrow-js/pull/155
* chore: bump eslint from 9.28.0 to 9.29.0 by @dependabot in https://github.com/apache/arrow-js/pull/160
* chore: bump @types/node from 22.15.21 to 24.0.3 by @dependabot in https://github.com/apache/arrow-js/pull/161
* chore: Add shfmt and shellcheck linters by @kou in https://github.com/apache/arrow-js/pull/158
* chore: bump google-closur

_[Truncated at 4000 characters — full notes: https://github.com/apache/arrow-js/releases/tag/v21.0.0]_

### v21.0.0-rc1 — Apache Arrow JS 21.0.0 RC1

- Date: 2025-07-01
- Version: v21.0.0-rc1
- Original notes: https://github.com/apache/arrow-js/releases/tag/v21.0.0-rc1
- Permalink: https://whatsnew.fyi/product/apache-arrow-js/releases/v21.0.0-rc1
- Labels: Pre-release

- **added** — Add LICENSE.txt and NOTICE.txt
- **added** — Add .github/ISSUE_TEMPLATE
- **added** — Add pull request template
- **added** — Add CODE_OF_CONDUCT.md
- **added** — Add CONTRIBUTING.md
- **added** — Add shfmt and shellcheck linters
- **changed** — Enable CI
- **changed** — Use the PR title and description by default for squash and merge
- **changed** — Move config.yaml to config.yml
- **changed** — Enable Dependabot
- **changed** — Enable integration tests
- **changed** — Migrate ESLint 8 to 9
- **changed** — Run Release Audit Tool in CI
- **changed** — Update repository URLs
- **changed** — Use Node.js 20
- **changed** — Publish docs
- **removed** — Remove lerna from package.json
- **removed** — Remove create:testdata/clean:testdata from package.json
- **removed** — Remove xml2js dependency

##### What's Changed
* Add LICENSE.txt and NOTICE.txt by @kou in https://github.com/apache/arrow-js/pull/12
* Enable CI by @kou in https://github.com/apache/arrow-js/pull/18
* GH-7: Add .github/ISSUE_TEMPLATE by @raulcd in https://github.com/apache/arrow-js/pull/16
* Use the PR title and description by default for squash and merge by @kou in https://github.com/apache/arrow-js/pull/20
* Move config.yaml.to config.yml by @raulcd in https://github.com/apache/arrow-js/pull/21
* Enable Dependabot by @kou in https://github.com/apache/arrow-js/pull/22
* chore: bump memfs from 4.17.0 to 4.17.2 by @dependabot in https://github.com/apache/arrow-js/pull/24
* chore: bump flatbuffers from 25.1.24 to 25.2.10 by @dependabot in https://github.com/apache/arrow-js/pull/25
* chore: bump @types/node from 20.14.9 to 22.15.21 by @dependabot in https://github.com/apache/arrow-js/pull/28
* chore: bump typedoc from 0.27.9 to 0.28.4 by @dependabot in https://github.com/apache/arrow-js/pull/29
* chore: bump gulp-esbuild from 0.13.0 to 0.14.0 by @dependabot in https://github.com/apache/arrow-js/pull/32
* chore: bump rollup from 4.24.3 to 4.41.0 by @dependabot in https://github.com/apache/arrow-js/pull/31
* chore: Add pull request template by @kou in https://github.com/apache/arrow-js/pull/33
* chore: Enable integration tests by @kou in https://github.com/apache/arrow-js/pull/34
* chore: bump typedoc from 0.28.4 to 0.28.5 by @dependabot in https://github.com/apache/arrow-js/pull/37
* chore: bump @swc/core from 1.6.6 to 1.11.29 by @dependabot in https://github.com/apache/arrow-js/pull/38
* chore: bump webpack from 5.96.1 to 5.99.9 by @dependabot in https://github.com/apache/arrow-js/pull/40
* chore: bump actions/setup-python from 5.3.0 to 5.6.0 by @dependabot in https://github.com/apache/arrow-js/pull/43
* chore: bump @rollup/plugin-node-resolve from 16.0.0 to 16.0.1 by @dependabot in https://github.com/apache/arrow-js/pull/39
* chore: bump @types/jest from 29.5.12 to 29.5.14 by @dependabot in https://github.com/apache/arrow-js/pull/42
* chore: Migrate ESLint 8 to 9 by @kou in https://github.com/apache/arrow-js/pull/128
* chore: Run Release Audit Tool in CI by @kou in https://github.com/apache/arrow-js/pull/129
* chore: bump @swc/helpers from 0.5.15 to 0.5.17 by @dependabot in https://github.com/apache/arrow-js/pull/131
* chore: bump typescript-eslint from 8.32.1 to 8.33.1 by @dependabot in https://github.com/apache/arrow-js/pull/132
* chore: bump esbuild from 0.25.0 to 0.25.5 by @dependabot in https://github.com/apache/arrow-js/pull/134
* chore: Add CODE_OF_CONDUCT.md by @kou in https://github.com/apache/arrow-js/pull/141
* chore: bump rollup from 4.41.0 to 4.42.0 by @dependabot in https://github.com/apache/arrow-js/pull/150
* chore: bump eslint from 9.27.0 to 9.28.0 by @dependabot in https://github.com/apache/arrow-js/pull/151
* chore: bump @swc/core from 1.11.29 to 1.11.31 by @dependabot in https://github.com/apache/arrow-js/pull/152
* Prepare release scripts by @kou in https://github.com/apache/arrow-js/pull/137
* chore: Update repository URLs by @kou in https://github.com/apache/arrow-js/pull/146
* chore: Add CONTRIBUTING.md by @kou in https://github.com/apache/arrow-js/pull/142
* chore: Remove `lerna` from `package.json` by @kou in https://github.com/apache/arrow-js/pull/144
* chore: Remove `create:testdata`/`clean:testdata` in `package.json` by @kou in https://github.com/apache/arrow-js/pull/148
* chore: bump google-closure-compiler from 20240317.0.0 to 20250603.0.0 by @dependabot in https://github.com/apache/arrow-js/pull/149
* chore: Remove xml2js dependency by @kou in https://github.com/apache/arrow-js/pull/155
* chore: bump eslint from 9.28.0 to 9.29.0 by @dependabot in https://github.com/apache/arrow-js/pull/160
* chore: bump @types/node from 22.15.21 to 24.0.3 by @dependabot in https://github.com/apache/arrow-js/pull/161
* chore: Add shfmt and shellcheck linters by @kou in https://github.com/apache/arrow-js/pull/158
* chore: bump google-closur

_[Truncated at 4000 characters — full notes: https://github.com/apache/arrow-js/releases/tag/v21.0.0-rc1]_