.eslintrc

{
	"env": {
		"browser": true,
		"node": true,
		"mocha": true
	},
	"parserOptions": {
		"sourceType": "module"
	},
	"globals": {
		"serverConfig": true,
		"__API_PATH__": true,
		"__MOCK__": true,
		"__DEV__": true,
		"jest": true,
		"describe": true,
		"it": true,
		"expect": true,
		"google": true,
		"jasmine": true
	},
	"rules": {
		// ---------------------- POSSIBLE ERRORS ---------------------- //
		"no-unused-vars": 2,
		"semi": 2,
		"comma-dangle": 2,
		// disallow assignment in conditional expressions
		"no-cond-assign": [
			2,
			"except-parens"
		],
		// disallow use of console
		"no-console": 0,
		// disallow use of constant expressions in conditions
		"no-constant-condition": 2,
		// disallow control characters in regular expressions
		"no-control-regex": 2,
		// disallow use of debugger
		"no-debugger": 2,
		// disallow duplicate keys when creating object literals
		"no-dupe-keys": 2,
		// disallow empty statements
		"no-empty": 2,
		// disallow the use of empty character classes in regular expressions
		"no-empty-character-class": 2,
		// disallow assigning to the exception in a catch block
		"no-ex-assign": 2,
		// disallow double-negation boolean casts in a boolean context
		"no-extra-boolean-cast": 0,
		// disallow unnecessary parentheses (off by default)
		"no-extra-parens": 0,
		// disallow unnecessary semicolons
		"no-extra-semi": 2,
		// disallow overwriting functions written as function declarations
		"no-func-assign": 2,
		// disallow function or variable declarations in nested blocks
		"no-inner-declarations": 2,
		// disallow invalid regular expression strings in the RegExp constructor
		"no-invalid-regexp": 2,
		// disallow irregular whitespace outside of strings and comments
		"no-irregular-whitespace": 2,
		// disallow negation of the left operand of an in expression
		"no-negated-in-lhs": 2,
		// disallow the use of object properties of the global object (Math and JSON) as functions
		"no-obj-calls": 2,
		// disallow multiple spaces in a regular expression literal
		"no-regex-spaces": 2,
		// require quotes around object literal property names (off by default)
		"quote-props": 0,
		// disallow sparse arrays
		"no-sparse-arrays": 2,
		// disallow unreachable statements after a return, throw, continue, or break statement
		"no-unreachable": 2,
		// disallow comparisons with the value NaN
		"use-isnan": 2,
		// Ensure JSDoc comments are valid (off by default)
		"valid-jsdoc": 0,
		// Ensure that the results of typeof are compared against a valid
		"valid-typeof": 2,


		// ---------------------- VARIABLES ---------------------- //

		// treat var statements as if they were block scoped (off by default)
		"block-scoped-var": 2,
		// specify the maximum cyclomatic complexity allowed in a program
		"complexity": [2, 15],
		// require return statements to either always or never specify values
		"consistent-return": 2,
		// specify curly brace conventions for all control statements
		"curly": [
			2,
			"all"
		],
		// require default case in switch statements (off by default)
		"default-case": 2,
		// encourages use of dot notation whenever possible
		"dot-notation": [
			2,
			{
				"allowKeywords": true
			}
		],
		// require the use of === and !==
		"eqeqeq": [
			2,
			"allow-null"
		],
		// make sure for-in loops have an if statement (off by default)
		"guard-for-in": 2,
		// disallow the use of alert, confirm, and prompt
		"no-alert": 2,
		// disallow use of arguments.caller or arguments.callee
		"no-caller": 2,
		// disallow use of labels for anything other then loops and switches
		"no-div-regex": 2,
		// disallow comparisons to null without a type-checking operator (off by default)
		"no-eq-null": 2,
		// disallow else after a return in an if
		"no-else-return": 2,
		// disallow use of eval()
		"no-eval": 2,
		// disallow adding to native types
		"no-extend-native": 2,
		// disallow unnecessary function binding
		"no-extra-bind": 2,
		// disallow fallthrough of case statements
		"no-fallthrough": 2,
		// disallow the use of leading or trailing decimal points in numeric literals (off by default)
		"no-floating-decimal": 2,
		// disallow use of eval()-like methods
		"no-implied-eval": 2,
		// disallow usage of __iterator__ property
		"no-iterator": 2,
		// disallow use of labeled statements
		"no-labels": 2,
		// disallow unnecessary nested blocks
		"no-lone-blocks": 2,
		// disallow creation of functions within loops
		"no-loop-func": 2,
		// disallow use of multiple spaces
		"no-multi-spaces": 2,
		// disallow use of multiline strings
		"no-multi-str": 2,
		// disallow reassignments of native objects
		"no-native-reassign": 2,
		// disallow use of new operator when not part of the assignment or comparison
		"no-new": 2,
		// disallow use of new operator for Function object
		"no-new-func": 2,
		// disallows creating new instances of String, Number, and Boolean
		"no-new-wrappers": 2,
		// disallow use of octal literals
		"no-octal": 2,
		// disallow use of octal escape sequences in string literals, such as var foo = "Copyright \251";
		"no-octal-escape": 2,
		// disallow use of process.env (off by default)
		"no-process-env": 0,
		// disallow usage of __proto__ property
		"no-proto": 2,
		// disallow declaring the same variable more then once
		"no-redeclare": 2,
		// disallow use of assignment in return statement
		"no-return-assign": 2,
		// disallow use of javascript: urls.
		"no-script-url": 2,
		// disallow comparisons where both sides are exactly the same
		"no-self-compare": 2,
		// disallow use of comma operator
		"no-sequences": 2,
		// disallow usage of expressions in statement position
		"no-unused-expressions": 2,
		// disallow use of void operator (off by default)
		"no-void": 2,
		// disallow usage of configurable warning terms in comments, e.g. TODO or FIXME
		"no-warning-comments": 2,
		// disallow use of the with statement
		"no-with": 2,
		// require use of second argument for parseint()
		"radix": 2,
		// requires to declare all vars on top of their containing scope
		"vars-on-top": 2,
		// require immediate function invocation to be wrapped in parentheses
		"wrap-iife": [
			2,
			"inside"
		],
		// require or disallow Yoda conditions
		"yoda": 2,


		// ---------------------- VARIABLES ---------------------- //

		// disallow the catch clause parameter name being the same as a variable in the outer scope (off by default in the node environment)
		"no-catch-shadow": 2,
		// disallow deletion of variables
		"no-delete-var": 2,
		// disallow labels that share a name with a variable
		"no-label-var": 2,
		// disallow declaration of variables already declared in the outer scope
		"no-shadow": 2,
		// disallow shadowing of names such as arguments
		"no-shadow-restricted-names": 2,
		// disallow use of undeclared variables unless mentioned in a /*global */ block
		"no-undef": 2,
		// disallow use of variables before they are defined
		"no-use-before-define": 0,
		// disallow use of undefined when initializing variables
		"no-undef-init": 2,
		// disallow use of undefined variable (off by default)
		"no-undefined": 0,
		// disallow mixing regular variable and require declarations (off by default) (on by default in the node environment)
		"no-mixed-requires": 2,


		// ---------------------- STRICT MODE ---------------------- //

		// controls location of Use Strict Directives
		"strict": [
			2,
			"safe"
		],

		// ---------------------- NODE.js ---------------------- //

		// enforces error handling in callbacks (off by default) (on by default in the node environment)
		"handle-callback-err": 0,
		// disallow use of new operator with the require function (off by default) (on by default in the node environment)
		"no-new-require": 0,
		// disallow string concatenation with __dirname and __filename (off by default) (on by default in the node environment)
		"no-path-concat": 0,
		// disallow process.exit() (on by default in the node environment)
		"no-process-exit": 0,
		// restrict usage of specified node modules (off by default)
		"no-restricted-modules": 0,
		// disallow use of synchronous methods (off by default)
		"no-sync": 0,


		// ---------------------- STYLISTIC ISSUES ---------------------- //

		// enforce spacing inside array brackets
		"array-bracket-spacing": 0,
		// enforce one true brace style
		"brace-style": [
			2,
			"1tbs",
			{ "allowSingleLine": true }
		],
		// require camel case names
		"camelcase": 2,
		// enforce spacing before and after comma
		"comma-spacing": 0,
		// enforce one true comma style
		"comma-style": [
			2,
			"last"
		],
		// enforces consistent naming when capturing the current execution context
		"consistent-this": 2,
		// enforce newline at the end of file, with no multiple empty lines
		"eol-last": 2,
		// require function expressions to have a name (off by default)
		"func-names": 0,
		// enforces use of function declarations or expressions (off by default)
		"func-style": 0,
		// this option enforces minimum and maximum identifier lengths (variable names, property names etc.) (off by default)
		"id-length": 0,
		// specify tab or space width for your code
		"indent": [
			"error",
			4,
			{
				"SwitchCase": 1
			}
		],
		// enforces spacing between keys and values in object literal properties
		"key-spacing": [
			2,
			{
				"beforeColon": false,
				"afterColon": true,
				"mode": "strict"
			}
		],
		// enforce empty lines around comments
		"lines-around-comment": [
			2,
			{
				"beforeBlockComment": true,
				"afterBlockComment": false,
				"allowBlockStart": true,
				"allowBlockEnd": false,
				"allowObjectStart": false,
				"allowObjectEnd": false,
				"beforeLineComment": true
			}
		],
		// specify the maximum depth callbacks can be nested (off by default)
		"max-nested-callbacks": 1,
		// require a capital letter for constructors
		"new-cap": 0,
		// disallow the omission of parentheses when invoking a constructor with no arguments (off by default)
		"new-parens": 0,
		//require or disallow an empty newline after variable declarations (off by default)
		"newline-after-var": 0,
		// disallow use of the Array constructor (off by default)
		"no-array-constructor": 0,
		// disallow use of the continue statement (off by default)
		"no-continue": 0,
		// disallow comments inline after code (off by default)
		"no-inline-comments": 0,
		// disallow if as the only statement in an else block (off by default)
		"no-lonely-if": 2,
		// disallow mixed spaces and tabs for indentation
		"no-mixed-spaces-and-tabs": 2,
		// disallow multiple empty lines (off by default)
		"no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 1 }],
		// disallow nested ternary expressions (off by default)
		"no-nested-ternary": 0,
		// disallow use of the Object constructor (off by default)
		"no-new-object": 0,
		// disallow space between function identifier and application
		"no-spaced-func": 0,
		// disallow the use of ternary operators (off by default)
		"no-ternary": 0,
		// disallow trailing whitespace at the end of lines
		"no-trailing-spaces": 2,
		// disallow dangling underscores in identifiers
		"no-underscore-dangle": 0,
		// allow just one var statement per function (off by default)
		"one-var": 0,
		// require assignment operator shorthand where possible or prohibit it entirely (off by default)
		"operator-assignment": 0,
		// enforce padding within blocks (off by default)
		"padded-blocks": 0,
		// specify whether double or single quotes should be used
		"quotes": [
			2,
			"single"
		],
		// sort variables within the same declaration block (off by default)
		"sort-vars": 0,
		// require a space after function names (off by default)
		"space-after-function-name": 0,
		// require a space after certain keywords (off by default)
		"keyword-spacing": 2,
		// enforce spacing before and after semicolons
		"semi-spacing": [
			"error",
			{
				"before": false,
				"after": false
			}
		],
		// require or disallow space before blocks (off by default)
		"space-before-blocks": 2,
		// require or disallow spaces inside brackets (off by default)
		"space-in-brackets": 0,
		// require or disallow spaces inside parentheses (off by default)
		"space-in-parens": 0,
		// require spaces around operators
		"space-infix-ops": 0,
		// Require or disallow spaces before/after unary operators (words on by default, nonwords off by default)
		"space-unary-ops": 2,
		// require or disallow a space immediately following the // in a line comment (off by default)
		"spaced-line-comment": 0,
		// require regex literals to be wrapped in parentheses (off by default)
		"wrap-regex": 0,


		// ---------------------- LEGACY ---------------------- //

		// specify the maximum depth that blocks can be nested (off by default)
		"max-depth": 0,
		// specify the maximum length of a line in your program (off by default)
		"max-len": ["error", 120],
		// limits the number of parameters that can be used in the function declaration. (off by default)
		"max-params": 0,
		// specify the maximum number of statement allowed in a function (off by default)
		"max-statements": 0,
		// disallow use of bitwise operators (off by default)
		"no-bitwise": 2,
		// disallow use of unary operators, ++ and -- (off by default)
		"no-plusplus": 2
	}
}