Scheduled release for August 9th, 2024

[eslint-github-bot]

The next scheduled release will occur on Friday, August 9th, 2024.

Release Day Checklist

• Remove the 'tsc agenda' label on this issue
• Review open pull requests and merge any that are ready
• Verify if there are other packages (i.e., espree, eslint-scope, eslint-visitor-keys, @eslint/eslintrc) that need to be released first
• Release @eslint/js to match the upcoming eslint version in Jenkins
• Update package.json in the eslint repo with new versions from the preceding steps (create and merge a pull request)
• Start the release on Jenkins
• Update the release blog post:
  • Add a "Highlights" section for any noteworthy changes.
  • In the authors frontmatter, replace eslintbot with your GitHub username.
  • Remove the draft: true line in frontmatter.
• Make a release announcement on Twitter
• Make a release announcement in the Discord '#announcements' channel
• Add a comment to this issue saying the release is out
• Add the 'patch release pending' label to this issue

Two Days After Release Day Checklist

Typically Monday for regular releases; two days after patch releases.

• Check the issues list for any regression issues

No Regressions Checklist

• Remove the 'patch release pending' label from this issue
• Close this issue

Patch Release Checklist

• Resolve the regression by merging any necessary fixes
• Start the release on Jenkins
• Update the release blog post:
  • Add a "Highlights" section for any noteworthy changes.
  • In the authors frontmatter, replace eslintbot with your GitHub username.
  • Remove the draft: true line in frontmatter.
• Make a release announcement on Twitter
• Make a release announcement in the Discord '#announcements' channel
• Add a comment to this issue saying the release is out
• Wait two days and repeat the Two Days After a Release checklist
• Close this issue

Followup

Please use this issue to document how the release went, any problems during the release, and anything the team might want to know about the release process. This issue should be closed after all patch releases have been completed (or there was no patch release needed).

Resources:

• Release guidelines

[nzakas]

Highlights

Here are some of the key changes in this release.

Experimental TypeScript configuration files

Arya Emami landed experimental support for TypeScript configuration files. Specifically, you can now use eslint.config.ts, eslint.config.mts, and eslint.config.cts files as your configuration files. Because this feature is experimental, you'll need to use the unstable_ts_config feature flag:

npx eslint --flag unstable_ts_config

For Node.js, you'll need to manually install jiti, which provides the TypeScript-to-JavaScript functionality; for Deno and Bun, no additional dependency is necessary. (When TypeScript type stripping lands as stable in Node.js, you also won't need an additional dependency in Node.js)

For more information on this feature, see TypeScript Configuration Files. For more information on using feature flags, see Feature Flags.

Other notable changes

(Whatever else there is)

[fasttime]

ESLint v9.9.0 has been released:

https://eslint.org/blog/2024/08/eslint-v9.9.0-released/

Please merge semver-patch PRs only until we determine whether or not a patch release is necessary.

[fasttime]

There were no regressions reported, so this concludes the v9.9.0 release. We can resume merging semver-minor changes.