ESLint 0.3.0 released

Configuration Files

• Breaking Change: Removed the ability to use JavaScript as a configuration file format (more info)
• Added the ability to use JavaScript-style comments in configuration files.
• Added support for .eslintignore files
• Allow configuration files to have any extension and assume they contain JSON

Formatters

• Breaking Change: Switched to using stylish format as the default for ESLint (more info)
• Merged stylish formatter into the main repository
• Added the rule ID to all formatter output to more easily identify which rule is causing a warning

Core

• Added the ability to traverse comment nodes in rules
• Ignore shebangs in JavaScript files so ESLint can validate all Node.js files

Rules

• Breaking Change: unnecessary-strict rule was renamed to no-extra-strict
• no-empty now disallows empty catch blocks when a finally block is present
• no-unused-vars was incorrectly reporting function expressions weren’t used when method calls were made on them - this was fixed
• brace-style was incorrectly reporting a violation when an if statement conditional spanned multiple lines - this was fixed

Documentation

• Lots of documentation updates and fixes
• Setup eslint.org as the new home for documentation

Breaking Changes

The complete list of breaking changes are as follows:

• Removed the ability to use JavaScript as a configuration file format
• Switched to using stylish format as the default
• unnecessary-strict rule was renamed to no-extra-strict

Complete Changelog

The following is the complete list of changes in this version:

• Config: Allow comments in JSON configuration files (fixes [#492](https://github.com/eslint/eslint/issues/492)) (Nicholas C. Zakas)
• Bug: max-len fix to report correct line number (fixes #552) (Nicholas C. Zakas)
• Build: Use browserify to create browser-ready ESLint (fixes #119) (Nicholas C. Zakas)
• Docs: Ensure all rules have entry on top-level rules index page (Nicholas C. Zakas)
• Docs: Add docs for no-fallthrough rule (Nicholas C. Zakas)
• Update README.md (Peter deHaan)
• Update README.md (Peter deHaan)
• Update package.json (Peter deHaan)
• Docs: Added documentation for semi rule (Nicholas C. Zakas)
• Build: Reset branch coverage target (Nicholas C. Zakas)
• Update build system to generate eslint.org during release (Nicholas C. Zakas)
• Updated setup doc (Nicholas C. Zakas)
• Fix #525 & #528 (Mangled Deutz)
• Improve no-negated-in-lhs description (David Bruant)
• Fixing typo (David Bruant)
• Update no-new.md (Tamas Fodor)
• Update no-extra-semi.md (Tamas Fodor)
• Fixing broken links in documentation (Ilya Volodin)
• Update about page (Nicholas C. Zakas)
• Site generation build step and documentation updates to support it (fixes #478) (Nicholas C. Zakas)
• Change message for brace-style rule (fixes #490) (Nicholas C. Zakas)
• Add question about ES6 support to FAQ (fixes #530) (Nicholas C. Zakas)
• Set unlimited number of listeners for event emitter (fixes #524) (Nicholas C. Zakas)
• Add support for comment events (fixes #531) Add :after events for comments (Nicholas C. Zakas)
• Add :after events for comments (Nicholas C. Zakas)
• Allow config files to have any name (fixes #486). (Aparajita Fishman)
• List available formatters (fixes #533). (Aparajita Fishman)
• Add support for comment events (fixes #531) (Nicholas C. Zakas)
• Add Stylish formatter and make it default. Fixes #517 (Sindre Sorhus)
• Fix missing code exit (Mangled Deutz)
• Added unit test for calling Config.getConfig with no arguments. (Aparajita Fishman)
• Typo (Mangled Deutz)
• Fixed docs typo (Nicholas C. Zakas)
• Mark functions as used when any method is called on them (Nicholas C. Zakas)
• Fixed: Config.getConfig is called either with a file path or with no args (fixes #520) (Aparajita Fishman)
• Fix minor bug in no-empty rule (Nicholas C. Zakas)
• add more info for failure messages (Nicholas C. Zakas)
• Add ruleId to all formatters output (fixes #472) (Nicholas C. Zakas)
• Remove unused code (Nicholas C. Zakas)
• Correctly handle case with both finally and catch in no-empty (Nicholas C. Zakas)
• Update documentation for no-unused-vars (Nicholas C. Zakas)
• Ensure that bound function expressions are reported as being used (fixes #510) (Nicholas C. Zakas)
• Allow empty catch/finally blocks (fixes #514) and update documentation (fixes #513) (Nicholas C. Zakas)
• Updated contribution guidelines (Nicholas C. Zakas)
• Add default setting for no-cond-assign (Nicholas C. Zakas)
• Add build step to check rule consistency (Nicholas C. Zakas)
• update docs: explicit cli args are exempt from eslintignore exclusions (Michael Ficarra)
• fixes #505: no-cond-assign should ignore doubly parenthesised tests (Michael Ficarra)
• Renamed unnecessary-strict to no-extra-strict (Nicholas C. Zakas)
• Fixed missing documentation links (Nicholas C. Zakas)
• Add build task to check for missing docs and tests for rules (Nicholas C. Zakas)
• Slight reorganization of rule groups (Nicholas C. Zakas)
• Added one-var and sorted some rules (Nicholas C. Zakas)
• Updated Travis badge for new location (Nicholas C. Zakas)
• fixes #494: allow shebangs in processed JS files (Michael Ficarra)
• fixes #496: lint ignored files when explicitly specified via the CLI (Michael Ficarra)
• More tests (Ilya Volodin)
• Upgrade Istanbul (Ilya Volodin)
• fixes #495: holey arrays cause no-comma-dangle rule to throw (Michael Ficarra)
• Documentation and minor changes (Ilya Volodin)
• Adding missing package registration (Ilya Volodin)
• Adding support for .eslintignore and .jshintignore (Closes #484) (Ilya Volodin)
• fixes #482: brace-style bug with multiline conditions (Michael Ficarra)
• Switching Travis to use ESLint (Closes #462) (Ilya Volodin)