ESLint v6.0.0-alpha.2 released

Highlights

1. Configuration using glob patterns now supports extends and nested overrides
2. Using multiple processors is now supported

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@6.0.0-alpha.2 --save-dev
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Migration Guide

If you’re upgrading from ESLint v5.x, we recommend looking at the migration guide, which describes the 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.

Breaking Changes

• 2d32a9e Breaking: stricter rule config validating (fixes #9505) (#11742) (薛定谔的猫)

Features

• b5fa149 New: multiple processors support (fixes #11035, fixes #11725) (#11552) (Toru Nagashima)
• 54e6eda New: extends in glob-based config (fixes #8813) (#11554) (Toru Nagashima)

Enhancements

• cf9cce8 Update: Add never option for new-parens (refs #10034) (#11379) (pfgithub)
• 71716eb Update: add fixer for no-div-regex rule (fixes #11355) (#11744) (joe-re)
• 53f7f4c Update: Uniform messages for the rules in “complexity” section (#11759) (Igor Novozhilov)

Bug Fixes

• f9790ca Fix: typo: missing word in docs (#11750) (Dimitri Mitropoulos)
• 5dad0b1 Fix: Unignoring directories in .eslintignore (fixes #11684) (#11685) (Mykola Bilochub)
• 7c8e86b Fix: wrong ‘plugin-missing’ error on Node.js 12 (fixes #11720) (#11722) (Toru Nagashima)

Documentation

• 45bd336 Docs: add about RuleTester’s parser to migration guide (fixes #11728) (#11761) (Toru Nagashima)
• 1374be4 Docs: add table of contents in readme (#11765) (薛定谔的猫)
• e45cc3f Docs: updated no-proto rule (fixes #11743) (#11746) (Francesco Trotta)
• 4625090 Docs: small fix about the migration guide (#11729) (Toru Nagashima)

Chores

• 9b87fee Chore: Fix formatter documentation generation (#11767) (Ilya Volodin)
• f116208 Chore: Fix site generation script for releases (#11766) (Ilya Volodin)
• 0a801d7 Chore: improve perf test (#11756) (薛定谔的猫)
• ec105b2 Chore: typo in JSDoc on timing.display’s return value (#11755) (Dimitri Mitropoulos)
• 15c6c63 Chore: eslint-config-eslint require node >= 8 (#11718) (薛定谔的猫)
• 219aecb Chore: restructure files (#11555) (Toru Nagashima)
• 67c671f Chore: ignore deprecated rules in fuzz tests (#11710) (Pig Fang)
• af81cb3 Chore: make fuzzer produce minimal reproducible examples of bugs (#11700) (Teddy Katz)