ESLint v9.0.0-beta.1 released

We just pushed ESLint v9.0.0-beta.1, which is a minor release upgrade of ESLint. This release adds some new features and fixes several bugs found in the previous release.

Highlights

This is a summary of the major changes you need to know about for this version of ESLint.

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

You can also specify the version directly:

npm i eslint@9.0.0-beta.1 --save-dev

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.

Features

Bug Fixes

  • 0cb4914 fix: validate options when comment with just severity enables rule (#18133) (Milos Djermanovic)

Documentation

  • 5fe095c docs: show v8.57.0 as latest version in dropdown (#18142) (Milos Djermanovic)
  • 7db5bb2 docs: Show prerelease version in dropdown (#18135) (Nicholas C. Zakas)
  • 73a5f06 docs: Update README (GitHub Actions Bot)
  • f95cd27 docs: Disallow multiple rule configuration comments in the same example (#18116) (Milos Djermanovic)
  • d8068ec docs: Update link for schema examples (#18112) (Svetlana)
  • c9f2f33 build: changelog update for 8.57.0 (#18144) (Milos Djermanovic)

Chores

  • 32ffdd1 chore: upgrade @eslint/js@9.0.0-beta.1 (#18146) (Milos Djermanovic)
  • e41425b chore: package.json update for @eslint/js release (Jenkins)
  • bb3b9c6 chore: upgrade @eslint/eslintrc@3.0.2 (#18145) (Milos Djermanovic)
  • e462524 chore: upgrade eslint-release@3.2.2 (#18138) (Milos Djermanovic)
  • 8e13a6b chore: fix spelling mistake in README.md (#18128) (Will Eastcott)
  • 66f52e2 chore: remove unused tools rule-types.json, update-rule-types.js (#18125) (Josh Goldberg ✨)
  • bf0c7ef ci: fix sync-labels value of pr-labeler (#18124) (Tanuj Kanti)
  • cace6d0 ci: add PR labeler action (#18109) (Nitin Kumar)
  • 1a65d3e chore: export base config from eslint-config-eslint (#18119) (Milos Djermanovic)
  • 9aa4df3 refactor: remove globals dependency (#18115) (Milos Djermanovic)

The latest ESLint news, case studies, tutorials, and resources.

ESLint v9.0.0 released
12 min read

ESLint v9.0.0 released

We just pushed ESLint v9.0.0, which is a major release upgrade of ESLint. This release adds some new features and fixes several bugs found in the previous release. This release also has some breaking changes, so please read the following closely.

Introducing ESLint Config Inspector
2 min read

Introducing ESLint Config Inspector

Introducing the ESLint Config Inspector, a visual tool to help you understand and inspect ESLint flat configuration files.

ESLint v9.0.0-rc.0 released
2 min read

ESLint v9.0.0-rc.0 released

We just pushed ESLint v9.0.0-rc.0, which is a major release upgrade of ESLint. This release adds some new features and fixes several bugs found in the previous release. This release also has some breaking changes, so please read the following closely.