.eslintrc

{
  "env": {
    "node": true,
    "es6": true
  },
  "rules": {
    // 2-space indentation
    "indent": [2, 2],
    // Disallow semi-colons, unless needed to disambiguate statement
    "semi": [2, "never"],
    // Require strings to use single quotes
    "quotes": [2, "single"],
    // Require curly braces for all control statements
    "curly": 2,
    // Disallow using variables and functions before they've been defined
    "no-use-before-define": 2,
    // Allow any case for variable naming
    "camelcase": 0,
    // Disallow unused variables, except as function arguments
    "no-unused-vars": [2, {"args":"none"}],
    // Allow leading underscores for method names
    // REASON: we use underscores to denote private methods
    "no-underscore-dangle": 0,
    // Allow multi spaces around operators since they are
    // used for alignment.  This is not consistent in the
    // code.
    "no-multi-spaces": 0,
    // Style rule is: most objects use { beforeColon: false, afterColon: true }, unless aligning which uses:
    //
    // {
    //   beforeColon : true,
    //   afterColon  : true
    // }
    //
    // eslint can't handle this, so the check is disabled.
    "key-spacing": 0,
    // Allow shadowing vars in outer scope (needs discussion)
    "no-shadow": 0,
    // Use if () { }
    //       ^ space
    "keyword-spacing": [2, {"before": true, "after": true}],
    // Use if () { }
    //          ^ space
    "space-before-blocks": [2, "always"]
  }
}