ESLint v4.15.0 released

Highlights

New APIs

CLIEngine now has a getRules() method. This is useful for integrations that need to look at rules’ metadata programmatically without knowing what rules might have been defined by plugins.

Rules now support messages metadata and messageId report parameters, including full support in RuleTester. This lets rule developers use messageIds in their rule tests and avoid needing to track report message changes in both the rule implementation and the corresponding test file. In addition, this is the first step towards core support for rule message localization.

New rule options

The indent rule now has an ignoreComments option. This allows users to opt out of indentation checks for comments if project style rules require that comments be indented in a different manner.

Features

• 6ab04b5 New: Add context.report({ messageId }) (fixes #6740) (#9165) (Jed Fox)
• 65f0176 New: CLIEngine#getRules() (refs #6582) (#9782) (Patrick McElhaney)

Enhancements

• c64195f Update: More detailed assert message for rule-tester (#9769) (Weijia Wang)
• bbabf34 Update: add ignoreComments option to indent rule (fixes #9018) (#9752) (Kevin Partington)

Bug Fixes

• 9fcfabf Fix: no-extra-parens false positive (fixes: #9755) (#9795) (Erin)
• 4c87f42 Fix: incorrect error messages of no-unused-vars (fixes #9774) (#9791) (akouryy)

Documentation

• fc7f404 Docs: add url to each of the rules (refs #6582) (#9788) (Patrick McElhaney)
• fc44da9 Docs: fix sort-imports rule block language (#9805) (ferhat elmas)
• 61e5fa0 Docs: Add table of contents to Node.js API docs (#9785) (Patrick McElhaney)
• db431cb Docs: HTTP -> HTTPS (fixes #9768) (#9768) (Ronald Eddy Jr)
• cbf0fb9 Docs: describe how to feature-detect scopeManager/visitorKeys support (#9764) (Teddy Katz)
• f7dcb70 Docs: Add note about “patch release pending” label to maintainer guide (#9763) (Teddy Katz)