v2.9.0

Version 2.9.0 (2015-01-23):

Changed the changelog date format to be YYYY-MM-DD.

Whoo a release during this blizzard! Hopefully, this will be our last release before we start pushing out pre-release versions of 3.0. (If necessary, we can push bug fixes to 2.x)

The plan:

• Push the 2.9.0 release
• Create a 2.x branch off of master
• Switch master to be the 3.0 branch
• Merge in 2.x changes + cleanup stuff for a 3.0 alpha release.
• Do what we can in our 3.0 milestone. We would really appreciate any help!
  • Especially for deprecating rules/options, rule merging, renames/inconsistencies that we don't catch.

New Rules

requireCapitalizedConstructorsNew (Alexander O'Mara)

// Description: Requires capitalized constructors to to use the `new` keyword

// Usage
"requireCapitalizedConstructors": {
  "allExcept": ["somethingNative"]
}

// Valid
var x = new Y();
var x = new somethingNative(); // exception

// Invalid
var x = Y();

Rule Updates

• validateNewlineAfterArrayElements: add autofix support for this rule (Joeri de Gooijer)

// can turn
var a = [0,
1,
2];

// into
var a = [
0,
1,
2
];

This was @joerideg's first PR, so congrats and hope to see more contributions (not necessarily here)!

I think we would need a seperate rule to both check/fix alignment properly.

• requireSemicolons: account for stage-2 ClassProperty (Henry Zhu)

class A {
  prop; // will add a semicolon here
  prop2 = 1; // and here
}

• requireCamelCaseOrUpperCaseIdentifiers: add extra options allowedPrefixes, allowedSuffixes, allExcept
  • This lets you specify a permitted array of String, RegExp, or ESTree RegExpLiteral values

For options: { allowedSuffixes: ["_dCel", {regex:{pattern:"_[kMG]?Hz"}}] }

// Extra valid options
var camelCase_dCel = 5;
var _camelCase_MHz = 6;

// Invalid
var camelCase_cCel = 4;
var CamelCase_THz = 5;

• requireNewlineBeforeBlockStatements, disallowNewlineBeforeBlockStatements: account for SwitchStatement

// Valid for requireNewlineBeforeBlockStatements
switch (a)
{
  case 1: break;
}

// Valid for disallowNewlineBeforeBlockStatements
switch (a) {
  case 1: break;
}

Presets

• airbnb: Enforce rule 25.1 (Joe Bartlett)
  • This adds requireDollarBeforejQueryAssignment
• airbnb: Enforce rule 7.11 (Joe Bartlett)
  • This fixes up function spacing issues (autofixable)
• google: Enforce naming rules
  • This adds "requireCamelCaseOrUpperCaseIdentifiers": { "allowedPrefixes": ["opt_"], "allExcept": ["var_args"] }

Bug Fixes

• requireEnhancedObjectLiterals: Don't error for computed properties (Henry Zhu)
• requireTemplateStrings: should not report string to binary (Oleg Gaidarenko)
• requireVarDeclFirst: be aware of the comments (Kushan Joshi)

Misc

• OVERVIEW.md: add the Visual Studio Code extension to list of "Friendly Packages" (Tyler Hughes)