v12.0.0-beta-9.2

12.0.0-beta-9.2 (2026-04-03)

Note that beta-9.1 is identical to beta-10. See #5763 for details. Future v12 betas (if there are any) will continue the beta-9.x naming.

🩹 Fixes

• deps: update dependency workerpool to v10 (#5751) (96a4768)
• use semver dot separator for beta pre-release versions (beta-X → beta.X) (#5764) (5574738)

📚 Documentation

• add "failing workaround" and new dash to sec-vuln-reports.mdx (#5783) (f9e553e)
• add FAQ explainer for dependency security vulnerability reports (#5691) (2517693)
• add FAQ section to CONTRIBUTING.md for "can I work on this?" (#5689) (682c307)
• add major release strategy, fix typos (#5551) (ec0fe0d)
• cleanup third party UI code examples for issue 5570 (#5784) (8d86811)
• document AI-generated code policies (#5693) (3533316)
• document many "external" services (#5685) (30f8fe6)
• fix typo in configuring.mdx (#5699) (fdf1a11)
• Updates COC Policy To Match OpenJS Guidelines (#5802) (9029f66)

🧹 Chores

• add Knip to docs-next, remove unused deps, and cleanup links (#5726) (a3908e9)
• add link from bug template to security explainer (#5782) (ab8fc25)
• add workflow to handle stale items (#5831) (dd08f6f)
• add workflow_dispatch to all workflows (#5793) (cca0a2c)
• deps: update actions/stale action to v10 (#5842) (e75b14f)
• deps: update dependency astro to v5.18.1 (#5786) (bf99e30)
• deps: update dependency chai to v6 (#5720) (2e07be1)
• deps: update dependency eslint to v10.1.0 (#5827) (2c8eeb0)
• deps: update dependency eslint-plugin-n to v17.24.0 (#5798) (bb66555)
• deps: update dependency globals to v17 (#5722) (acf9357)
• deps: update dependency installed-check to v10 (#5738) (5905ed9)
• deps: update dependency knip to v5.88.0 (#5799) (40ec9b8)
• deps: update dependency knip to v6 (#5828) (661f349)
• deps: update dependency rollup to v4.59.0 (#5813) (1ef2020)
• deps: update dependency rollup to v4.60.0 (#5829) (4ab5813)
• deps: update eslint monorepo to v10 (major) (#5742) (fe9dc01)
• deps: update joelwmale/webhook-action digest to 6cebc9d (#5702) (e61c8d5)
• docs: rename docs-next to docs (#5770) (39c15a8)
• fix supporters file extension in knip config (#5796) (53ca72f)
• have Tests workflow ignore more relevant paths (#5762) (8e2cebe)
• remove global.setImmediate fallback (#5836) (5e69d16)
• remove repeat() polyfill (#5837) (f988a80)
• remove now-unused utils.inherits (#5766) (d0a636b)
• remove unused libc props from package-lock.json (#5817) (b0a89ce)
• remove unused fossaignore (#5769) (8a0eaf7)
• run tests when PR is retargeted (#5761) (3481b1e)
• switch reporters from util.inherits to ES2015 classes (#5180) (c3f32ce)
• switch Runnable, Hook, and Test from util.inherits to ES2015 classes (#5178) (1378fd8)
• use beta-9.1 instead of beta.10 (#5821) (bc1eff2)

🤖 Automation

• deps: bump codecov/codecov-action in the github-actions group (#5832) (525b50a)
• deps: bump OctoGuide/bot in the github-actions group (#5791) (fb6bfd6)

v12.0.0-beta-10

12.0.0-beta-10 (2026-02-21)

🌟 Features

• remove Sauce Labs (#5700) (625c34e)

🩹 Fixes

• change Pending to properly extend Error (#5679) (158effd)
• deps: update dependency chokidar to v5 (#5734) (ff2f17f)
• deps: update dependency minimatch to v10 (#5743) (3f3e449)
• deps: update dependency starlight-package-managers to ^0.12.0 (#5717) (aa4ba48)

📚 Documentation

• fix client redirects (#5697) (dd9145d), closes #5696

🧹 Chores

• Configure Renovate (#5678) (a9c9b90)
• deps: update dependency @rollup/plugin-alias to v6 (#5718) (267d751)
• deps: update dependency @rollup/plugin-commonjs to v29 (#5719) (9ed4ee5)
• deps: update dependency astro to v5.17.1 (#5703) (ec3d1fa)
• deps: update dependency chai to v4.5.0 (#5705) (870f9f8)
• deps: update dependency cross-env to v10 (#5721) (20b7476)
• deps: update dependency knip to v5.83.1 (#5708) (d833413)
• deps: update dependency npm-run-all2 to v8 (#5727) (e38e0ec)
• deps: update dependency prettier to v3.8.1 (#5709) (2f98cfd)
• deps: update dependency rimraf to v6 (#5728) (ba124e9)
• deps: update dependency rollup to v4.57.1 (#5710) (178749d)
• deps: update dependency unexpected-map to v3 (#5736) (c1f3379)
• deps: update dependency unist-util-visit to v5.1.0 (#5711) (7ede894)
• deps: update dependency webdriverio to v9 (#5739) (ff334df)
• deps: update dependency webpack-cli to v6 (#5741) (95c9d75)
• deps: update dependency workerpool to v9.3.4 (#5715) (c030a3b)
• deps: update remark (#5745) (37a25f1)
• fix timeout issue with some XUnit tests (53cc467)
• switch Suite from util.inherits to ES2015 classes (#5179) (1ce690e)

🤖 Automation

• deps: bump OctoGuide/bot in the github-actions group (#5724) (87224d8)
• run npm audit fix (#5695) (c7b00b0)

v12.0.0-beta-9

12.0.0-beta-9 (2026-02-13)

🌟 Features

• remove log-symbols dependency (#5469) (b92168f)

v12.0.0-beta-8

12.0.0-beta-8 (2026-02-06)

🧹 Chores

• use OIDC to publish to npm (#5681) (5567aed)

v12.0.0-beta-7

12.0.0-beta-7 (2026-02-03)

🩹 Fixes

• bump diff dependency to ^8.0.3 (#5674) (15fb31a)
• print helpful message when internal CLI error happens (#5344) (1e11836)

📚 Documentation

• update sponsor image to be larger (#5659) (bbe2bdb)

🧹 Chores

• move nyc config changes from package.json into .nycrc (#5668) (e923e40)
• remove extra newline (bbe2bdb)

v12.0.0-beta-6

12.0.0-beta-6 (2026-01-23)

🩹 Fixes

• allow chain call timeout to override nested items timeout (#5612) (5525da6)
• import() fallback prevention (#5647) (6a78fa3)

🤖 Automation

• deps: bump OctoGuide/bot in the github-actions group (#5653) (e06cce7)

v12.0.0-beta-5

12.0.0-beta-5 (2026-01-16)

🌟 Features

• add --fail-hook-affected-tests option to report skipped tests as failed (#5519) (0ed524a)

📚 Documentation

• add missing /next/* redirects (#5627) (8fa183d)

🧹 Chores

• cleanup issue templates (#5624) (1972dd7)
• remove unused assets folder (#5638) (ddf8644)
• update spam filter (#5645) (cf945fb)
• update tagline (#5635) (8ff0209)

🤖 Automation

• deps: bump OctoGuide/bot in the github-actions group (#5648) (fed6bbd)
• docs/dev-deps: use JS-native fetch to get supporters data instead of external needle (#5643) (e37e56f)
• initial file implementation for ocotoguide (#5608) (a5f5c64)

v12.0.0-beta-4

12.0.0-beta-4 (2026-01-04)

🌟 Features

• ESM configuration file (#5397) (dff9d78)
• migrate Markdown lint to @eslint/markdown (#5593) (d9e1f0a)

🩹 Fixes

• remove run and use globalThis setup (#5592) (1544c39)

📚 Documentation

• fix v3_older changelog duplicate headings (#5602) (a750518)

🧹 Chores

• ci: use OIDC token for trusted publishing to npm (#5610) (dc0fdb7)
• create exclusions for nyc (#5609) (702473a)
• main: release 12.0.0-beta-4 (#5598) (424516e)
• prevent unwanted Prettier rewrites (#5591) (3ea1578)
• remove broken browser-test.yml (#5615) (33ce345)
• remove legacy docs/ (#5583) (d8c310e)
• revert "chore(main): release 12.0.0-beta-4 (#5598)" (#5619) (dba8091)

🤖 Automation

• dep: update diff from v7 to v8 (#5605) (8ca311c)
• update npm command for format (#5603) (c6a29cc)

v12.0.0-beta-3

12.0.0-beta-3 (2026-01-01)

🌟 Features

• add mocha.mjs export (#5527) (e1cf23c)
• bump serialize-javascript from 6.0.2 to 7.0.2 (#5589) (24fb1b6)
• bump strip-json-comments from 3 to 5 (#5484) (9b0db24)

🩹 Fixes

• allow importing ESM interface and reporters (#5563) (bc9fc84)
• docs-next: backer's logo is consistent regardless of size (#5594) (1a53a10)
• surface ts-node compile errors (#5572) (add4cf8)

📚 Documentation

• bumped docs-next Astro to ^5.16.6 (#5574) (806222b)
• fix light mode Astro accent text color (#5585) (9cc3ada)
• update Contributor License Agreement link in CONTRIBUTING.md (#5567) (410ce0d)

🧹 Chores

• normalized ESLint config to v9's recommended structure (#5575) (7f9ed1f)
• update Rollup to v4 (#5510) (cafa782)

🤖 Automation

• dev-deps: upgrade eslint from v8 to v9 (#5559) (bb24ca8)
• dev-deps: upgrade markdownlint-cli to latest v0.46.0 (#5560) (a124f1d)
• dev-deps: upgrade nyc from 15 to 17 (#5556) (599ab01)

v12.0.0-beta-2

12.0.0-beta-2 (2025-11-25)

🧹 Chores

• bump glob to version 13 (#5546) (f4d4ad2)