5.2.0 / 2018-05-18

🎉 Enhancements

• #3375: Add support for comments in mocha.opts (@plroebuck)

🐛 Fixes

• #3346: Exit correctly from before hooks when using --bail (@outsideris)

📖 Documentation

• #3328: Mocha-flavored API docs! (@Munter)

🔩 Other

• #3330: Use Buffer.from() (@harrysarson)
• #3295: Remove redundant folder (@DavNej)
• #3356: Refactoring (@plroebuck)

5.1.1 / 2018-04-18

🐛 Fixes

• #3325: Revert change which broke --watch (@boneskull)

5.1.0 / 2018-04-12

🎉 Enhancements

• #3210: Add --exclude option (@metalex9)

🐛 Fixes

• #3318: Fix failures in circular objects in JSON reporter (@jeversmann, @boneskull)

📖 Documentation

• #3323: Publish actual API documentation! (@dfberry, @Munter)
• #3299: Improve docs around exclusive tests (@nicgirault)

🔩 Other

• #3302, #3308, #3310, #3315, #3316: Build matrix improvements (more info) (@outsideris, @boneskull)
• #3272: Refactor reporter tests (@jMuzsik)

5.0.5 / 2018-03-22

Welcome @outsideris to the team!

🐛 Fixes

• #3096: Fix --bail failing to bail within hooks (@outsideris)
• #3184: Don't skip too many suites (using describe.skip()) (@outsideris)

📖 Documentation

• #3133: Improve docs regarding "pending" behavior (@ematicipo)
• #3276, #3274: Fix broken stuff in CHANGELOG.md (@tagoro9, @honzajavorek)

🔩 Other

• #3208: Improve test coverage for AMD users (@outsideris)
• #3267: Remove vestiges of PhantomJS from CI (@anishkny)
• #2952: Fix a debug message (@boneskull)

5.0.4 / 2018-03-07

🐛 Fixes

• #3265: Fixes regression in "watch" functionality introduced in v5.0.2 (@outsideris)

5.0.3 / 2018-03-06

This patch features a fix to address a potential "low severity" ReDoS vulnerability in the diff package (a dependency of Mocha).

🔒 Security Fixes

• #3266: Bump diff to v3.5.0 (@anishkny)

🔩 Other

• #3011: Expose generateDiff() in Base reporter (@harrysarson)

5.0.2 / 2018-03-05

This release fixes a class of tests which report as false positives. Certain tests will now break, though they would have previously been reported as passing. Details below. Sorry for the inconvenience!

🐛 Fixes

• #3226: Do not swallow errors that are thrown asynchronously from passing tests (@boneskull). Example:

  it('should actually fail, sorry!', function (done) {
    // passing assertion
    assert(true === true);
  
    // test complete & is marked as passing
    done();
  
    // ...but something evil lurks within
    setTimeout(() => {
      throw new Error('chaos!');
    }, 100);
  });

  Previously to this version, Mocha would have silently swallowed the chaos! exception, and you wouldn't know. Well, now you know. Mocha cannot recover from this gracefully, so it will exit with a nonzero code.

  Maintainers of external reporters: If a test of this class is encountered, the Runner instance will emit the end event twice; you may need to change your reporter to use runner.once('end') intead of runner.on('end').

• #3093: Fix stack trace reformatting problem (@outsideris)

🔩 Other

• #3248: Update browser-stdout to v1.3.1 (@honzajavorek)

5.0.1 / 2018-02-07

...your garden-variety patch release.

Special thanks to Wallaby.js for their continued support! ❤️

🐛 Fixes

• #1838: --delay now works with .only() (@silviom)
• #3119: Plug memory leak present in v8 (@boneskull)

📖 Documentation

• #3132, #3098: Update --glob docs (@outsideris)
• #3212: Update Wallaby.js-related docs (@ArtemGovorov)
• #3205: Remove outdated cruft (@boneskull)

🔩 Other

• #3224: Add proper Wallaby.js config (@ArtemGovorov)
• #3230: Update copyright year (@josephlin55555)

5.0.0 / 2018-01-17

Mocha starts off 2018 right by again dropping support for unmaintained rubbish.

Welcome @vkarpov15 to the team!

💥 Breaking Changes

• #3148: Drop support for IE9 and IE10 (@Bamieh)
  Practically speaking, only code which consumes (through bundling or otherwise) the userland buffer module should be affected. However, Mocha will no longer test against these browsers, nor apply fixes for them.

🎉 Enhancements

• #3181: Add useful new --file command line argument (documentation) (@hswolff)

🐛 Fixes

• #3187: Fix inaccurate test duration reporting (@FND)
• #3202: Fix bad markup in HTML reporter (@DanielRuf)

😎 Developer Experience

• #2352: Ditch GNU Make for nps to manage scripts (@TedYav)

📖 Documentation

• #3137: Add missing --no-timeouts docs (@dfberry)
• #3134: Improve done() callback docs (@maraisr)
• #3135: Fix cross-references (@vkarpov15)
• #3163: Fix tpyos (@tbroadley)
• #3177: Tweak README.md organization (@xxczaki)
• Misc updates (@boneskull)

🔩 Other

• #3118: Move TextMate Integration to its own repo (@Bamieh)
• #3185: Add Node.js v9 to build matrix; remove v7 (@xxczaki)
• #3172: Markdown linting (@boneskull)
• Test & Netlify updates (@Munter, @boneskull)

4.1.0 / 2017-12-28

This is mainly a "housekeeping" release.

Welcome @Bamieh and @xxczaki to the team!

🐛: Fixes

• #2661: progress reporter now accepts reporter options (@canoztokmak)
• #3142: xit in bdd interface now properly returns its Test object (@Bamieh)
• #3075: Diffs now computed eagerly to avoid misinformation when reported (@abrady0)
• #2745: --help will now help you even if you have a mocha.opts (@Zarel)

🎉 Enhancements

• #2514: The --no-diff flag will completely disable diff output (@CapacitorSet)
• #3058: All "setters" in Mocha's API are now also "getters" if called without arguments (@makepanic)

📖 Documentation

• #3170: Optimization and site speed improvements (@Munter)
• #2987: Moved the old site repo into the main repo under docs/ (@boneskull)
• #2896: Add maintainer guide (@boneskull)
• Various fixes and updates (@xxczaki, @maty21, @leedm777)

🔩 Other

• Test improvements and fixes (@eugenet8k, @ngeor, @38elements, @Gerhut, @ScottFreeCode, @boneskull)
• Refactoring and cruft excision (@38elements, @Bamieh, @finnigantime, @boneskull)