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eslint

10.11.0566M downloads/moeslint/eslint ↗New releases in your daily digest, changelog included.

An AST-based pattern checker for JavaScript.

Last release 7 days ago
18 Sep 2026
Ships on a steady schedule
a new release about every 2 weeks
Nearly every release is documented
notes for 19 of 19 stable releases
405 versions withdrawn
withdrawn after publishing
13 years old
430 releases · first in 2013

Release timeline

430 releases since 2013

2013201520172019

Releases

0.1.46 Dec 2013withdrawn: This version is no longer supported. Please see https://eslint.org/version-support for other options.
Add release scripts to package.json (Nicholas C. Zakas)
0.1.4 (Nicholas C. Zakas)

Add release scripts to package.json (Nicholas C. Zakas)

Fixed release error in Makefile (Nicholas C. Zakas)

Fix JSHint warnings (Nicholas C. Zakas)

Make sure 'default' isn't flagged by no-space-returns-throw rule (fixes #442) (Nicholas C. Zakas)

Fixing documentation (Ilya Volodin)

Fixing disabling rules with invalid comments Closes #435 (Ilya Volodin)

improve assertion on wrong number of errors (Christoph Neuroth)

fixes #431: no-unused-expressions should not flag statement level void (Michael Ficarra)

fixes #437: fragile no-extend-native rule (Michael Ficarra)

change space-* rule documentation headers to be more descriptive (Michael Ficarra)

Moved to tabs, added comments, a few more tests (Jamund Ferguson)

split GH-332 rule into space-unary-word-ops and space-return-throw-case (Michael Ficarra)

fixes #346: validate strings passed to the RegExp constructor (Michael Ficarra)

change some documentation extensions from js to md (Michael Ficarra)

fixes #332: unary word operators must be followed by whitespace (Michael Ficarra)

Add some docs (Jamund Ferguson)

DRYing cli tests and improving code coverage (Ilya Volodin)

fixes #371: add no-shadow-restricted-names rule (Michael Ficarra)

Added Support for Object.defineProperty() checking (Jamund Ferguson)

fixes #333: add rule to disallow gratuitously parenthesised expressions (Michael Ficarra)

improve rule test coverage (Michael Ficarra)

No Extend Native (Jamund Ferguson)

change getTokens 2nd/3rd arguments to count tokens, not characters (Michael Ficarra)

fixes #416: no-fallthrough flagging last case + reporting wrong line num (Michael Ficarra)

fixes #415: fix unnecessary-strict rule false positives (Michael Ficarra)

Add missing dependency (Nicholas C. Zakas)

Update docs related to running unit tests (Nicholas C. Zakas)

Add JSHint as missing dependency (Nicholas C. Zakas)

Switch to using ShellJS makefile (fixes #418) (Nicholas C. Zakas)

Updated documentation to reflect test changes (refs #417) (Nicholas C. Zakas)

Change to eslintTester.addRuleTest (fixes #417) (Nicholas C. Zakas)

Fix false positives for no-script-url (fixes #400) (Nicholas C. Zakas)

Fix lint warning (Nicholas C. Zakas)

Fixing ESLint warnings, introducing Makefile.js (not yet wired in) (Nicholas C. Zakas)

fixes #384: include builtin module list to avoid repl dependency (Michael Ficarra)

0.1.3 (Nicholas C. Zakas)

0.1.326 Nov 2013withdrawn: This version is no longer supported. Please see https://eslint.org/version-support for other options.

Updated changelog (Nicholas C. Zakas)

0.1.3 (Nicholas C. Zakas)
Updated changelog (Nicholas C. Zakas)
Vows is gone. Mocha is now default (Ilya Volodin)
fixes #412: remove last remaining false positives in no-spaced-func (Michael Ficarra)
fixes #407: no-spaced-func rule flagging non-argument-list spaced parens (Michael Ficarra)
Add no-extra-semi to configuration (fixes #386) (Nicholas C. Zakas)
Converting formatter tests and core (Ilya Volodin)
Don't output anything when there are no errors in compact formatter (fixes #408) (Nicholas C. Zakas)
Removing Node 0.11 test - it fails all the time (Nicholas C. Zakas)
Completing conversion of rule's tests to mocha (Ilya Volodin)
added mocha conversion tests for strict, quote-props and one-var; enhanced one of the invalid one-var tests that was expecting two messages (Michael Paulukonis)

Open source →

0.1.224 Nov 2013withdrawn: This version is no longer supported. Please see https://eslint.org/version-support for other options.

added mocha tests for radix and quotes; fixed some of the internals on quotes from vows annotations (Michael Paulukonis)

0.1.2 (Nicholas C. Zakas)
added mocha tests for radix and quotes; fixed some of the internals on quotes from vows annotations (Michael Paulukonis)
added tests for regex-spaces, strict, unnecessary-strict; fixed some types in overview/author notes in other tests. (Michael Paulukonis)
Converting unittests to mocha (Ilya Volodin)
mocha conversions of tests for 'use-isnan' and 'wrap-iife' (Michael Paulukonis)
added mocha tests semi.js and wrap-regex.js (Michael Paulukonis)
Converting more tests to mocha (Ilya Volodin)
Update CONTRIBUTING.md (Nicholas C. Zakas)
Cleaning up eslintTester (Ilya Volodin)
DRYing unittests and converting them to mocha (Ilya Volodin)
Reformatted Gruntfile (Nicholas C. Zakas)
Add tests to config load order: base, env, user. (icebox)
Fixing indent in gruntfile (Ilya Volodin)
Removing jake, adding Grunt, Travis now runs grunt (Ilya Volodin)
Add rules per environments to config. (icebox)
Add globals property to the environments. (icebox)
Fix error about IIFE if the function is in a new (Marsup)
Fix a broken link in the docs (Brian J Brennan)
Add test coverage for additional cases, fix open paren at beginning of expr (Matthew DuVall)
Fixing no-undef for eval use case (Ilya Volodin)
fixes #372: disallow negated left operand in in operator (Michael Ficarra)
Fixing no-self-compare rule to check for operator (Ilya Volodin)
bug: open parens in args causes no-spaced-func to trigger (Matthew DuVall)
fixes #369: restrict UnaryExpressions to delete in no-unused-expressions (Michael Ficarra)
Make sure delete operator isn't flagged as unused expression (fixes #364) (Nicholas C. Zakas)
Don't flag ++ or -- as unused expressions (fixes #366) (Nicholas C. Zakas)
Ensure that 'use strict' isn't flagged as an unused expression (fixes #361) (Nicholas C. Zakas)
Increase test coverage for strict-related rules (refs #361) (Nicholas C. Zakas)
Up code coverage numbers (Nicholas C. Zakas)
Fixes error in new-cap rule when 'new' is used without a constructor (fixes #360) (Nicholas C. Zakas)
added files array in package json (Christian)
removed unused jshint dependency (Christian)
Add test coverage for new Foo constructor usage (Matt DuVall)
Pull code coverage up by removing unused method (Matt DuVall)
recognise CallExpression variant of RegExp ctor in no-control-regex rule (Michael Ficarra)
Merge smart-eqeqeq into eqeqeq (Matt DuVall)
Catch additional cases for a.b, new F, iife (Matt DuVall)
0.2.0-dev (Nicholas C. Zakas)
Version 0.1.0 (Nicholas C. Zakas)
rule: no-spaced-func disallow spaces between function identifier and application (Matt DuVall)

Open source →

0.1.04 Nov 2013withdrawn: This version is no longer supported. Please see https://eslint.org/version-support for other options.

Version 0.1.0 (Nicholas C. Zakas)

Version 0.1.0 (Nicholas C. Zakas)
Updated Readme for v0.1.0 (Nicholas C. Zakas)
Bump code coverage verification to 95% across the board (Nicholas C. Zakas)
Fixed broken links (Nicholas C. Zakas)
Added information about runtime rules (Nicholas C. Zakas)
Added documentation about configuration files (Nicholas C. Zakas)
Added description of -v option (Nicholas C. Zakas)
Updated architecture documentation (Nicholas C. Zakas)
Fix bug in no-control-regex (fixes #347) (Nicholas C. Zakas)
Fix link to architecture doc in readme (azu)
Rule: No control characters in regular expressions (fixes #338) (Nicholas C. Zakas)
Add escaping = test (Matt DuVall)
Add docs for rule (Matt DuVall)
rule: no-div-regex for catching ambiguous division operators in regexes (Matt DuVall)
Change context-var to block-scoped-var (Matt DuVall)
Implement config.globals (Oleg Grenrus)
Add 'config-declared global' test (Oleg Grenrus)
Adding ability to separate rules with comma (Ilya Volodin)
Added rule for missing 'use strict' (fixes #321) (Nicholas C. Zakas)
Fixing unittests and finishing code (Ilya Volodin)
Disabling/enabling rules through comments (Ilya Volodin)
Rename rule to context-var and add documentation (Matt DuVall)
Added link to no-global-strict doc in readme (Nicholas C. Zakas)
Add try-catch scoping with tests (Matt DuVall)
Fix linting error (Matt DuVall)
Store FunctionDeclarations in scope as they can be used as literals (Matt DuVall)
Fix to use getTokens and add test for MemberExpression usage (Matt DuVall)
rule: block-scope-var to check for variables declared in block-scope (Matt DuVall)
no-unused-expressions rule: add test and doc mention for a && b() (Michael Ficarra)
rule: wrap-regex for parens around regular expression literals (Matt DuVall)
fixes #308: implement no-unused-expressions rule; ref. jshint rule W030 (Michael Ficarra)
Updated change log script to filter out merge messages (Nicholas C. Zakas)
Updated changelog (Nicholas C. Zakas)
0.1.0-dev (Nicholas C. Zakas)

Open source →

0.0.722 Jul 2013withdrawn: This version is no longer supported. Please see https://eslint.org/version-support for other options.

Add code coverage checks to npm test and update rule tests to have better coverage (Nicholas C. Zakas)

0.0.7 (Nicholas C. Zakas)
Add code coverage checks to npm test and update rule tests to have better coverage (Nicholas C. Zakas)
Fixed CLI output on serial programatic executions (Ian Christian Myers)
Removes line length from code style convention docs (Josh Perez)
Adds escapeRegExp and fixes documentation (Josh Perez)
Add quotes rule and test coverage for configuration options (Matt DuVall)
Adds templating for lint messages and refactors rules to use it (Josh Perez)
Fixes lint rules for unchecked test file (Josh Perez)
Changes dotnotation rule to match JSHint style (Josh Perez)
Change configInfo to options and add test coverage (Matt DuVall)
Merge branch 'master' of https://github.com/nzakas/eslint into optional-args-for-rule (Matt DuVall)
Adds dot notation lint rule (Josh Perez)
Strip trailing underscores in camelcase rule - Fixes #94 (Patrick Brosset)
add mailing list link (Douglas Campos)
Strip leading underscores in camelcase rule - Fixes #94 (Patrick Brosset)
Created no-dangle rule. (Ian Christian Myers)
Fixed rule name (James Allardice)
Make sure the callee type is Identifier (James Allardice)
Add rule for implied eval via setTimeout/Interval (James Allardice)
Fix rule name in config (James Allardice)
Fixes #90 -- updates docstrings (Stephen Murray)
Fixes issue with fs.existsSync on NodeJS 0.6 (Ian Christian Myers)
Fixing -c config option. (Ian Christian Myers)
Allow arrays to be passed as multiple args to rule (Matt DuVall)
Test to make sure empty case with one line break is safe (Matt DuVall)
Rule: The Function constructor is eval (Ilya Volodin)
Enabled require("eslint") and exposed out CLI. (Ian Christian Myers)
Adds test and fix for issue #82 (Mark Macdonald)
Merge branch 'master' of https://github.com/nzakas/eslint into ok (Yusuke Suzuki)
Created brace-style rule. (Ian Christian Myers)
Formatters can now process multiple files at once (Jamund Ferguson)
Rule: Do not use 'new' for side effects (Ilya Volodin)
Adds smarter-eqeqeq rule (Josh Perez)
Add EditorConfig file for consistent editor/IDE behavior (Jed Hunsaker)
Fix the positive case for no-unreachable where there is no return statement at all, or if the return is at the end. Those cases should not return any errors. The error condition was not be checked before throwing the rule error. (Joel Feenstra)
Adds test and fix for no-octal on 0 literal (Mark Macdonald)
Don't report no-empty warnings when a parent is FunctionExpression / FunctionDeclaration (Yusuke Suzuki)
Add api.getAncestors (Yusuke Suzuki)
Ensure estraverse version 1.2.0 or later (Yusuke Suzuki)
Fixes no-alert lint rule for non identifier calls (Josh Perez)
Fixes exception when init is null (Josh Perez)
Fixes no-octal check to only check for numbers (Josh Perez)
0.0.7-dev (Nicholas C. Zakas)
0.0.6 (Nicholas C. Zakas)
Follow the rule naming conventions (James Allardice)
Add rule for missing radix argument to parseInt (James Allardice)
Allow return, falls-through comment, and throw for falls-through (Matt DuVall)
Merge branch 'master' of https://github.com/nzakas/eslint into rule-fall-through (Matt DuVall)
Globals are not good, declare len (Matt DuVall)
Rule to add no-fall-through (Matt DuVall)

Open source →

0.0.617 Jul 2013withdrawn: This version is no longer supported. Please see https://eslint.org/version-support for other options.

Changed semi rule to use tokens instead of source (Nicholas C. Zakas)

0.0.6 (Nicholas C. Zakas)
Changed semi rule to use tokens instead of source (Nicholas C. Zakas)
Renaming new-parens rule (Ilya Volodin)
Renaming no-new-wrappers rule and adding tests (Ilya Volodin)
Add license URL (Nick Schonning)
Remove unused sinon requires (Nick Schonning)
Remove redundant JSHint directives (Nick Schonning)
Rule: Do not use constructor for wrapper objects (Ilya Volodin)
Test node 0.11 unstable but allow it to fail (Nick Schonning)
Rule: Constructor should use parentheses (Ilya Volodin)
Fix reference to "CSS Lint" in Contributing documentation (Brian McKenna)
Add git attributes file for line endings (Andy Hu)
Rename to create an 'index' file in GH web view (Evan Goer)
Avoid accidentally creating a markdown link (Evan Goer)
Add headings and correct internal links (Evan Goer)
Add wiki files to docs directory (Evan Goer)
Add rules for leading/trailing decimal points (James Allardice)
Add rule to prevent comparisons with value NaN (James Allardice)
Fixing jshint error (Ilya Volodin)
Rule: no octal literals (Ilya Volodin)
Rule: no undefined when initializing variables (Ilya Volodin)
Updated CONTRIBUTING.md (Nicholas C. Zakas)
Make sure namespaces are honored in new-cap (Nicholas C. Zakas)
Make sure no-empty also checks for ';;' (Nicholas C. Zakas)
Add CLI option to output version (Nicholas C. Zakas)
Updated contribution guidelines (Nicholas C. Zakas)
Fixing jshint complaints. (Joel Feenstra)
Converting to a switch statement and declaring variables. (Joel Feenstra)
Added .jshintrc file (until ESLint can lint itself) and cleaned up JSHint warnings (Nicholas C. Zakas)
Merge branch 'master' of github.com:nzakas/jscheck (Nicholas C. Zakas)
A bit of cleanup (Nicholas C. Zakas)
Add unreachable code detection for switch cases and after continue/break. (Joel Feenstra)
Add support for detecting unreachable code after a throw or return statement. (Joel Feenstra)
Fix curly brace check when an if statement is the alternate. (Joel Feenstra)
Check for empty switch statements with no cases. (Matt DuVall)
Added CONTRIBUTING.md (Nicholas C. Zakas)
Added rule to check for missing semicolons (fixes #9) (Nicholas C. Zakas)
Verify that file paths exist before reading the file (Matt DuVall)
Added guard-for-in rule (fixes #1) (Nicholas C. Zakas)
Run linting with npm test as well (Nicholas C. Zakas)
Removed foo.txt (Nicholas C. Zakas)
Updated config file with new no-caller ID (Nicholas C. Zakas)
Changed name of no-arg to no-caller (Nicholas C. Zakas)
Increased test coverage (Nicholas C. Zakas)
Got npm test to work with istanbul, huzzah! (Nicholas C. Zakas)
Moved /config to /conf (Nicholas C. Zakas)
Added script to auto-generate changelog (Nicholas C. Zakas)
Add quote-props rule (Mathias Bynens)
Cleaned up relationship between bin/eslint, lib/cli.js, and lib/eslint.js (Nicholas C. Zakas)
Add problem count to compact formatter (Nicholas C. Zakas)
Fix merge conflict (Nicholas C. Zakas)
Change reporters to formatters, add format command line option. Also added tests for compact format. (Nicholas C. Zakas)
Change reporters to formatters, add format command line option (Nicholas C. Zakas)
Start development of 0.0.6-dev (Nicholas C. Zakas)

Open source →