.eslintrc

{
  "parser": "babel-eslint",
  "env": {
    "browser": true
  },
  "rules": {
    // Possible Errors //
    //-----------------//

    "comma-dangle": [2, "never"],
    "no-cond-assign": [2, "except-parens"],

    // Allow for debugging
    "no-console": 1,

    "no-constant-condition": 2,
    "no-control-regex": 2,

    // Allow for debugging
    "no-debugger": 1,

    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-empty": 2,
    "no-empty-character-class": 2,
    "no-ex-assign": 2,
    "no-extra-boolean-cast": 2,
    "no-extra-parens": [2, "functions"],
    "no-extra-semi": 2,
    "no-func-assign": 2,

    // Stylistic... might consider disallowing in the future
    "no-inner-declarations": 0,

    "no-invalid-regexp": 2,
    "no-irregular-whitespace": 2,
    "no-negated-in-lhs": 2,
    "no-obj-calls": 2,
    "no-regex-spaces": 2,
    "no-sparse-arrays": 0,

    // Optimizer and coverage will handle/highlight this and can be useful for debugging
    "no-unreachable": 1,

    "use-isnan": 2,
    "valid-jsdoc": 0,
    "valid-typeof": 2,

    // Best Practices //
    //----------------//
    "block-scoped-var": 0,
    "complexity": 0,
    "consistent-return": 0,
    "curly": 2,
    "default-case": 1,
    "dot-notation": [2, { "allowKeywords": false }],
    "eqeqeq": 0,
    "guard-for-in": 1,
    "no-alert": 2,
    "no-caller": 2,
    "no-div-regex": 1,
    "no-else-return": 0,
    "no-eq-null": 0,
    "no-eval": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-fallthrough": 2,
    "no-floating-decimal": 2,
    "no-implied-eval": 2,
    "no-iterator": 2,
    "no-labels": 2,
    "no-lone-blocks": 2,
    "no-loop-func": 0,
    "no-multi-spaces": 2,
    "no-multi-str": 1,
    "no-native-reassign": 2,
    "no-new": 2,
    "no-new-func": 2,
    "no-new-wrappers": 2,
    "no-octal": 2,
    "no-octal-escape": 2,
    "no-param-reassign": 0,
    "no-process-env": 2,
    "no-proto": 2,
    "no-redeclare": 2,
    "no-return-assign": 2,
    "no-script-url": 2,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-throw-literal": 2,
    "no-unused-expressions": 2,
    "no-void": 0,
    "no-warning-comments": 1,
    "no-with": 2,
    "radix": 2,
    "vars-on-top": 0,
    "wrap-iife": 2,
    "yoda": 0,

    // Strict //
    //--------//
    "strict": 0,

    // Variables //
    //-----------//
    "no-catch-shadow": 2,
    "no-delete-var": 2,
    "no-label-var": 2,
    "no-shadow": 0,
    "no-shadow-restricted-names": 0,
    "no-undef": 2,
    "no-undef-init": 2,
    "no-undefined": 0,
    "no-unused-vars": [2, { "vars": "all", "args": "after-used" }],
    "no-use-before-define": [2, "nofunc"],

    // Node.js //
    //---------//
    // Others left to environment defaults
    "no-mixed-requires": 0,

    // Stylistic //
    //-----------//
    "indent": 0,
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "camelcase": 2,
    "comma-spacing": [2, { "before": false, "after": true }],
    "comma-style": [2, "last"],
    "consistent-this": [1, "self"],
    "eol-last": 2,
    "func-names": 0,
    "func-style": [2, "declaration"],
    "key-spacing": [
      2,
      {
        "beforeColon": false,
        "afterColon": true
      }
    ],
    "max-nested-callbacks": 0,
    "new-cap": 2,
    "new-parens": 2,
    "newline-after-var": 0,
    "no-array-constructor": 2,
    "no-continue": 0,
    "no-inline-comments": 0,
    "no-lonely-if": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multiple-empty-lines": 0,
    "no-nested-ternary": 1,
    "no-new-object": 2,
    "no-spaced-func": 2,
    "no-ternary": 0,
    "no-trailing-spaces": 2,
    "no-underscore-dangle": 0,
    "one-var": 0,
    "operator-assignment": 0,
    "padded-blocks": 0,
    "quote-props": [2, "as-needed", { "keywords": true }],
    "quotes": [2, "single", "avoid-escape"],
    "semi": 2,
    "semi-spacing": [2, { "before": false, "after": true }],
    "sort-vars": 0,
    "space-before-blocks": [2, "always"],
    "space-before-function-paren": [
      2,
      { "anonymous": "never", "named": "never" }
    ],
    "space-in-brackets": 0,
    "space-in-parens": [2, "never"],
    "space-infix-ops": 2,
    "space-unary-ops": 2,
    "spaced-comment": [2, "always"],
    "wrap-regex": 1,

    "no-var": 2
  }
}