ESLint v7.5.0 released

Highlights

Optional Chaining Support

Support for optional chaining has landed in ESLint!

const maybeProp = obj.first?.second;

The default parser and built-in rules will support this syntax when you enable parserOptions.ecmaVersion: 2020 in your configuration:

{
    "parserOptions": {
        "ecmaVersion": 2020
    }
}

Deprecating id-blacklist

id-blacklist has been deprecated and replaced with id-denylist. We renamed id-blacklist to id-denylist in the previous release (v7.4.0), which unfortunately led to some unintended breakages in the ESLint ecosystem. In this release, we have added back the id-blacklist rule and have marked it as deprecated. If you are currently using id-blacklist, we recommend switching to id-denylist to ensure you receive bug fixes and updates to the rule in future releases.

Enhancements

• 6ea3178 Update: optional chaining support (fixes #12642) (#13416) (Toru Nagashima)
• f4d7b9e Update: deprecate id-blacklist rule (#13465) (Dimitri Mitropoulos)
• c8f9c82 Update: Improve report location no-irregular-whitespace (refs #12334) (#13462) (Milos Djermanovic)
• 0af1d28 Update: add allowSeparatedGroups option to sort-imports (fixes #12951) (#13455) (Milos Djermanovic)
• 1050ee7 Update: Improve report location for no-unneeded-ternary (refs #12334) (#13456) (Milos Djermanovic)
• b77b420 Update: Improve report location for max-len (refs #12334) (#13458) (Milos Djermanovic)

Bug Fixes

• a96bc5e Fix: arrow-body-style fixer for in wrap (fixes #11849) (#13228) (Anix)
• 095194c Fix: add end location to reports in object-curly-newline (refs #12334) (#13460) (Milos Djermanovic)
• 10251bb Fix: add end location to reports in keyword-spacing (refs #12334) (#13461) (Milos Djermanovic)

Documentation

• 885a145 Docs: clarify behavior if meta.fixable is omitted (refs #13349) (#13493) (Milos Djermanovic)
• 1a01b42 Docs: Update technology sponsors in README (#13478) (Nicholas C. Zakas)
• f1cc725 Docs: fix linebreaks between versions in changelog (#13488) (Milos Djermanovic)
• 61097fe Docs: Update int rule level to string (#13483) (Brandon Mills)
• e951457 Docs: fix wording in configuring.md (#13469) (Piper)

Dependency Upgrades

• 6ed9e8e Upgrade: lodash@4.17.19 (#13499) (Yohan Siguret)
• 748734f Upgrade: Updated puppeteer version to v4.0.0 (#13444) (odidev)

Build Related

• f2e68ec Build: update webpack resolve.mainFields to match website config (#13457) (Milos Djermanovic)

Chores

• 540b1af Chore: enable consistent-meta-messages internal rule (#13487) (Milos Djermanovic)
• e14a645 Chore: use espree.latestEcmaVersion in fuzzer (#13484) (Milos Djermanovic)