.eslintrc.json

{
  "rules": {
    // Braces only needed for multi-line arrow function blocks
    "arrow-body-style": [2, "as-needed"],

    // Require spacing around =>
    "arrow-spacing": 2,

    // Always require spacing around a single line block
    "block-spacing": 2,

    // No space before always a space after a comma
    "comma-spacing": [2, {"before": false, "after": true}],

    // Commas at the end of the line not the start
    "comma-style": 2,

    // Don't require spaces around computed properties
    "computed-property-spacing": [2, "never"],

    // Functions must always return something or nothing
    "consistent-return": 2,

    // Require braces around blocks that start a new line
    "curly": [2, "multi-line"],

    // Always require a trailing EOL
    "eol-last": 2,

    // Require function* name()
    "generator-star-spacing": [2, {"before": false, "after": true}],

    // Space after colon not before in property declarations
    "key-spacing": [2, { "beforeColon": false, "afterColon": true, "mode": "minimum" }],

    // Require spaces around keywords
    "keyword-spacing": 2,

    // Unix linebreaks
    "linebreak-style": [2, "unix"],

    // Always require parenthesis for new calls
    "new-parens": 2,

    // Use [] instead of Array()
    "no-array-constructor": 2,

    // Disallow use of debugger
    "no-debugger": 2,

    // No duplicate arguments in function declarations
    "no-dupe-args": 2,

    // No duplicate keys in object declarations
    "no-dupe-keys": 2,

    // No duplicate cases in switch statements
    "no-duplicate-case": 2,

    // No labels
    "no-labels": 2,

    // If an if block ends with a return no need for an else block
    "no-else-return": 2,

    // No empty character classes in regex
    "no-empty-character-class": 2,

    // Disallow empty destructuring
    "no-empty-pattern": 2,

    // No assigning to exception variable
    "no-ex-assign": 2,

    // No using !! where casting to boolean is already happening
    "no-extra-boolean-cast": 2,

    // No double semicolon
    "no-extra-semi": 2,

    // No overwriting defined functions
    "no-func-assign": 2,

    // No invalid regular expressions
    "no-invalid-regexp": 2,

    // No odd whitespace characters
    "no-irregular-whitespace": 2,

    // No single if block inside an else block
    "no-lonely-if": 2,

    // No mixing spaces and tabs in indent
    "no-mixed-spaces-and-tabs": [2, "smart-tabs"],

    // No unnecessary spacing
    "no-multi-spaces": [2, { "exceptions": {
      "AssignmentExpression": true,
      "VariableDeclarator": true,
      "ArrayExpression": true,
      "ObjectExpression": true
    }}],

    // No reassigning native JS objects
    "no-native-reassign": 2,

    // No (!foo in bar)
    "no-negated-in-lhs": 2,

    // Nested ternary statements are confusing
    "no-nested-ternary": 2,

    // Use {} instead of new Object()
    "no-new-object": 2,

    // No Math() or JSON()
    "no-obj-calls": 2,

    // No octal literals
    "no-octal": 2,

    // No redeclaring variables
    "no-redeclare": 2,

    // No unnecessary comparisons
    "no-self-compare": 2,

    // No declaring variables that hide things like arguments
    "no-shadow-restricted-names": 2,

    // No spaces between function name and parentheses
    "no-spaced-func": 2,

    // Disallow throwing literals (eg. |throw "error"| instead of
    // |throw new Error("error")|)
    "no-throw-literal": 2,

    // No trailing whitespace
    "no-trailing-spaces": 2,

    // No using undeclared variables
    "no-undef": 2,

    // Error on newline where a semicolon is needed
    "no-unexpected-multiline": 2,

    // No unreachable statements
    "no-unreachable": 2,

    // No expressions where a statement is expected
    "no-unused-expressions": 2,

    // No using with
    "no-with": 2,

    // Always require semicolon at end of statement
    "semi": [2, "always"],

    // Require space before blocks
    "space-before-blocks": 2,

    // No space padding in parentheses
    "space-in-parens": [2, "never"],

    // Require spaces around operators
    "space-infix-ops": 2,

    // ++ and -- should not need spacing
    "space-unary-ops": [2, { "words": true, "nonwords": false }],

    // Require "use strict" to be defined globally in the script.
    "strict": [2, "global"],

    // No comparisons to NaN
    "use-isnan": 2,

    // Only check typeof against valid results
    "valid-typeof": 2
  },
  "env": {
    "browser": true
  },
  "globals": {
    "Components": false,
    "dump": false
  }
}