ESLint v10.0.0-rc.2 released

Highlights

This version of ESLint is not ready for production use and is provided to gather feedback from the community before releasing the final version. Please let us know if you have any problems or feedback by creating issues on our GitHub repo.

Note that this prerelease version of ESLint has a separate documentation section.

Notable bug fixes

• A regression in the core strict rule has been fixed.
• LegacyESLint and FlatESLint exports are now completely removed from the /use-at-your-own-risk entrypoint. In previous prerelease versions of ESLint v10, they were exported as null.

Installing

Since this is a pre-release version, you will not automatically be upgraded by npm. You must specify the next tag when installing:

npm i eslint@next --save-dev
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You can also specify the version directly:

npm i eslint@10.0.0-rc.2 --save-dev
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Migration Guide

As there are a lot of changes, we’ve created a migration guide describing the breaking changes in great detail along with the steps you should take to address them. We expect that most users should be able to upgrade without any build changes, but the migration guide should be a useful resource if you encounter problems.

Bug Fixes

• 727451e fix: fix regression of global mode report range in strict rule (#20462) (ntnyq)
• e80485f fix: remove fake FlatESLint and LegacyESLint exports (#20460) (Francesco Trotta)
• 9eeff3b fix: update esquery (#20423) (cryptnix)

Documentation

• 1495654 docs: Update README (GitHub Actions Bot)
• 0b8ed5c docs: document support for :is selector alias (#20454) (sethamus)
• 1c4b33f docs: Document policies about ESM-only dependencies (#20448) (Milos Djermanovic)

Chores

• 2d14173 chore: fix typos in docs and comments (#20458) (o-m12a)