ESLint 0.13.0 released

by Nicholas C. Zakas - 24 January 2015

We just pushed ESLint 0.13.0, which is a minor release upgrade. This release includes new features and bug fixes.


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

More ECMAScript 6 support

0.13.0 adds more support for several ECMAScript 6, including:

  • Template strings
  • Default parameters
  • Unicode code point escapes

All of these options are off by default, and you can enable them in your configuration file. See Configuring ESLint for more information.

Breaking: Block scoping

Additionally, 0.13.0 has full support for block scoping (let and const), so all scope-related rules should work the way you expect. This is a breaking change because if you were previously using let and const, the scope was being calculated incorrectly, and that may result in different behavior than in 0.13.0.

Deprecating global-strict and no-extra-strict

The global-strict and no-extra-strict rules have been deprecated in favor of adding this functionality into the strict rule. We suggest you upgrade to using the updated strict rule as soon as possible. The global-strict and no-extra-strict rules will be removed when 1.0.0 is released.

Breaking Changes

  • Breaking: Update escope (fixes #1642) (Nicholas C. Zakas)

Bug Fixes

  • Fix: disregards leading './' in ignore pattern or file name (fixes #1685) (Chris Montrois)
  • Fix: Except object literal methods from func-names (fixes #1699) (Brandon Mills)
  • Fix: generator-star should allow params (fixes #1677) (Brandon Mills)
  • Fix: Make no-redeclare work with let (fixes #917) (Nicholas C. Zakas)
  • Fix: Missing undeclared variables in JSX (fixes #1676) (Yannick Croissant)
  • Fix: no-unused-expressions rule incorrectly flagging yield (fixes #1672) (Rémi Gérard-Marchant)
  • Fix: no-unused-vars for JSX (fixes #1673 and fixes #1534) (Yannick Croissant)


  • Update: Add allowPattern option for dot-notation rule (fixes #1679) (Tim Schaub)
  • Update: Add CLIEngine.getFormatter() (fixes #1653) (Nicholas C. Zakas)
  • Update: Added globals for: phantom,jquery, prototypejs, shelljs (fixes #1704) (Dmitriy Shekhovtsov)
  • Update: Combine strict mode rules (fixes #1246) (Brandon Mills)
  • Update: no-warning-comments matches on whole word only (fixes #1709) (Nick Fisher)
  • Update: Switch to using estraverse-fb (fixes #1712) (Nicholas C. Zakas)
  • Update: The rule spaced-line-comment now also allows tabs and not only spaces as whitespace. (fixes #1713) (Dieter Oberkofler)
  • Update: use global strict mode everywhere (fixes #1691) (Brandon Mills)

Dependency Upgrades

  • Upgrade: Espree to 1.7.1 (fixes #1706) (Nicholas C. Zakas)
  • Upgrade: globals module to latest (fixes #1670) (Nicholas C. Zakas)


  • Docs: Add angularjs-eslint link into the integration doc (Emmanuel DEMEY)
  • Docs: add Jasmine rules and eslintplugin npm links (Tom Vincent)
  • Docs: Add more info about context (fixes #1330) (Nicholas C. Zakas)
  • Docs: Fixed example for the space-return-throw-case rule (mpal9000)
  • Docs: Make CLA notice more prominent (Nicholas C. Zakas)
  • Docs: Update README FAQ (Nicholas C. Zakas)

Build Related

  • Build: Add JSDoc generation (fixes #1363) (Nicholas C. Zakas)