.eslintrc

{
  "parser": "babel-eslint",
  "ecmaVersion": 7,
  "ecmaFeatures": {
    "impliedStrict": true,
    "jsx": true
  },
  "sourceType": "module",
  "env": {
    "browser": true,
    "node": true,
    "jasmine": true,
    "es6": true,
    "protractor": true
  },
  "globals": {
  },
  "plugins": [
    "babel"
  ],
  "rules": {
    ///// Babel rule enhancements
    ///// These rules are provided by eslint-plugin-babel to supplement and replace standard rules based on Babel's capabilities
    ///// https://github.com/babel/eslint-plugin-babel
    "babel/no-await-in-loop": 2, // Supplement: Guard against awaiting async functions inside of a loop
    "babel/generator-star-spacing": [ 2, "before" ], // Replacement: Handles async/await functions correctly
    "babel/new-cap": 2, // Replacement: Ignores capitalized decorators (@Decorator)
    "babel/array-bracket-spacing": 0, // Replacement: Handles destructuring arrays with flow type in function parameters
    "babel/object-curly-spacing": 0, // Replacement: Doesn't complain about export x from "mod"; or export * as x from "mod";
    "babel/object-shorthand": 0, // Replacement: Doesn't fail when using object spread (...obj)
    "babel/arrow-parens": 0, // Replacement: Handles async functions correctly
    "babel/flow-object-type": 0, // Supplement: Require a particular separator between properties in Flow object types.

    ///// Possible Errors
    ///// These rules relate to possible syntax or logic errors in JavaScript code:
    "comma-dangle": 2, // require or disallow trailing commas
    "no-cond-assign": [ 2, "except-parens" ], // disallow assignment operators in conditional expressions
    "no-console": 0, // disallow the use of console
    "no-constant-condition": 2, // disallow constant expressions in conditions
    "no-control-regex": 0, // disallow control characters in regular expressions
    "no-debugger": 2, // disallow the use of debugger
    "no-dupe-args": 2, // disallow duplicate arguments in function definitions
    "no-dupe-keys": 2, // disallow duplicate keys in object literals
    "no-duplicate-case": 2, // disallow duplicate case labels
    "no-empty": 2, // disallow empty block statements
    "no-empty-character-class": 2, // disallow empty character classes in regular expressions
    "no-ex-assign": 2, // disallow reassigning exceptions in catch clauses
    "no-extra-boolean-cast": 2, // disallow unnecessary boolean casts
    "no-extra-parens": 0, // disallow unnecessary parentheses
    "no-extra-semi": 2, // disallow unnecessary semicolons
    "no-func-assign": 0, // disallow reassigning function declarations
    "no-inner-declarations": 0, // disallow function or var declarations in nested blocks
    "no-invalid-regexp": 2, // disallow invalid regular expression strings in RegExp constructors
    "no-irregular-whitespace": 2, // disallow irregular whitespace outside of strings and comments
    "no-negated-in-lhs": 0, // disallow negating the left operand in in expressions
    "no-obj-calls": 2, // disallow calling global object properties as functions
    "no-regex-spaces": 2, // disallow multiple spaces in regular expression literals
    "no-sparse-arrays": 2, // disallow sparse arrays
    "no-unexpected-multiline": 2, // disallow confusing multiline expressions
    "no-unreachable": 2, // disallow unreachable code after return, throw, continue, and break statements
    "no-unsafe-finally": 0, // disallow control flow statements in finally blocks
    "use-isnan": 2, // require calls to isNaN() when checking for NaN
    "valid-jsdoc": 2, // enforce valid JSDoc comments
    "valid-typeof": 2, // enforce comparing typeof expressions against valid strings

    ///// Best Practices
    ///// These rules relate to better ways of doing things to help you avoid problems:
    "accessor-pairs": [ 2, { "setWithoutGet": true, "getWithoutSet": false } ], // enforce getter and setter pairs in objects
    "array-callback-return": 0, // enforce return statements in callbacks of array methods
    "block-scoped-var": 2, // enforce the use of variables within the scope they are defined
    "complexity": [ 2, 30 ], // enforce a maximum cyclomatic complexity allowed in a program
    "consistent-return": 2, // require return statements to either always or never specify values
    "curly": 2, // enforce consistent brace style for all control statements
    "default-case": 2, // require default cases in switch statements
    "dot-location": [ 2, "property" ], // enforce consistent newlines before and after dots
    "dot-notation": 0, // enforce dot notation whenever possible
    "eqeqeq": [ 2, "smart" ], // require the use of === and !==
    "guard-for-in": 2, // require for-in loops to include an if statement
    "no-alert": 2, // disallow the use of alert, confirm, and prompt
    "no-caller": 2, // disallow the use of arguments.caller or arguments.callee
    "no-case-declarations": 2, // disallow lexical declarations in case clauses
    "no-div-regex": 0, // disallow division operators explicitly at the beginning of regular expressions
    "no-else-return": 0, // disallow else blocks after return statements in if statements
    "no-empty-function": 0, // disallow empty functions
    "no-empty-pattern": 2, // disallow empty destructuring patterns
    "no-eq-null": 2, // disallow null comparisons without type-checking operators
    "no-eval": 2, // disallow the use of eval()
    "no-extend-native": 2, // disallow extending native types
    "no-extra-bind": 2, // disallow unnecessary calls to .bind()
    "no-extra-label": 2, // disallow unnecessary labels
    "no-fallthrough": 2, // disallow fallthrough of case statements
    "no-floating-decimal": 0, // disallow leading or trailing decimal points in numeric literals
    "no-implicit-coercion": 0, // disallow shorthand type conversions
    "no-implicit-globals": 0, // disallow var and named function declarations in the global scope
    "no-implied-eval": 2, // disallow the use of eval()-like methods
    "no-invalid-this": 0, // disallow this keywords outside of classes or class-like objects
    "no-iterator": 2, // disallow the use of the __iterator__ property
    "no-labels": 2, // disallow labeled statements
    "no-lone-blocks": 2, // disallow unnecessary nested blocks
    "no-loop-func": 2, // disallow function declarations and expressions inside loop statements
    "no-magic-numbers": 0, // disallow magic numbers
    "no-multi-spaces": 0, // disallow multiple spaces
    "no-multi-str": 0, // disallow multiline strings
    "no-native-reassign": 2, // disallow reassigning native objects
    "no-new": 2, // disallow new operators outside of assignments or comparisons
    "no-new-func": 2, // disallow new operators with the Function object
    "no-new-wrappers": 2, // disallow new operators with the String, Number, and Boolean objects
    "no-octal": 2, // disallow octal literals
    "no-octal-escape": 2, // disallow octal escape sequences in string literals
    "no-param-reassign": 0, // disallow reassigning function parameters
    "no-proto": 2, // disallow the use of the __proto__ property
    "no-redeclare": 2, // disallow var redeclaration
    "no-return-assign": 0, // disallow assignment operators in return statements
    "no-script-url": 2, // disallow javascript: urls, // urls
    "no-self-assign": 2, // disallow assignments where both sides are exactly the same
    "no-self-compare": 2, // disallow comparisons where both sides are exactly the same
    "no-sequences": 2, // disallow comma operators
    "no-throw-literal": 2, // disallow throwing literals as exceptions
    "no-unmodified-loop-condition": 0, // disallow unmodified loop conditions
    "no-unused-expressions": [2, { "allowShortCircuit": true, "allowTernary": true } ], // disallow unused expressions
    "no-unused-labels": 2, // disallow unused labels
    "no-useless-call": 2, // disallow unnecessary calls to .call() and .apply()
    "no-useless-concat": 2, // disallow unnecessary concatenation of literals or template literals
    "no-useless-escape": 0, // disallow unnecessary escape characters
    "no-void": 0, // disallow void operators
    "no-warning-comments": 0, // disallow specified warning terms in comments
    "no-with": 2, // disallow with statements
    "radix": 2, // enforce the consistent use of the radix argument when using parseInt()
    "vars-on-top": 0, // require var declarations be placed at the top of their containing scope
    "wrap-iife": [2, "any"], // require parentheses around immediate function invocations
    "yoda": 0, // require or disallow “Yoda” conditions

    ///// Strict Mode
    ///// These rules relate to strict mode directives:
    "strict": [2, "never"], // require or disallow strict mode directives


    ///// Variables
    ///// These rules relate to variable declarations:
    "init-declarations": 0, // require or disallow initialization in var declarations
    "no-catch-shadow": 0, // disallow catch clause parameters from shadowing variables in the outer scope
    "no-delete-var": 2, // disallow deleting variables
    "no-label-var": 2, // disallow labels that share a name with a variable
    "no-restricted-globals": 0, // disallow specified global variables
    "no-shadow": 0, // disallow var declarations from shadowing variables in the outer scope
    "no-shadow-restricted-names": 0, // disallow identifiers from shadowing restricted names
    "no-undef": 2, // disallow the use of undeclared variables unless mentioned in /*global */ comments
    "no-undef-init": 0, // disallow initializing variables to undefined
    "no-undefined": 0, // disallow the use of undefined as an identifier
    "no-unused-vars": [ 2, { "vars": "all", "args": "after-used" } ], // disallow unused variables
    "no-use-before-define": [2, "nofunc"], // disallow the use of variables before they are defined

    ///// Node.js and CommonJS
    ///// These rules relate to code running in Node.js, or in browsers with CommonJS:

    "callback-return": [2, [ "callback", "cb", "next", "done" ] ], // require return statements after callbacks
    "global-require": 0, // require require() calls to be placed at top-level module scope
    "handle-callback-err": [2, "^.*(e|E)rr" ], // require error handling in callbacks
    "no-mixed-requires": 0, // disallow require calls to be mixed with regular var declarations
    "no-new-require": 0, // disallow new operators with calls to require
    "no-path-concat": 2, // disallow string concatenation with __dirname and __filename
    "no-process-env": 0, // disallow the use of process.env
    "no-process-exit": 0, // disallow the use of process.exit()
    "no-restricted-modules": 0, // disallow specified modules when loaded by require
    "no-sync": 0, // disallow synchronous methods

    ///// Stylistic Issues
    ///// These rules relate to style guidelines, and are therefore quite subjective:
    "array-bracket-spacing": 0, // enforce consistent spacing inside array brackets
    "block-spacing": 1, // enforce consistent spacing inside single-line blocks
    "brace-style": 0, // enforce consistent brace style for blocks
    "camelcase": [ 2, { "properties": "never" } ], // enforce camelcase naming convention
    "comma-spacing": 1, // enforce consistent spacing before and after commas
    "comma-style": [1, "last"], // enforce consistent comma style
    "computed-property-spacing": 0, // enforce consistent spacing inside computed property brackets
    "consistent-this": 0, // enforce consistent naming when capturing the current execution context
    "eol-last": 0, // enforce at least one newline at the end of files
    "func-names": 0, // enforce named function expressions
    "func-style": 0, // enforce the consistent use of either function declarations or expressions
    "id-blacklist": 0, // disallow specified identifiers
    "id-length": 0, // enforce minimum and maximum identifier lengths
    "id-match": 0, // require identifiers to match a specified regular expression
    "indent": 0, // enforce consistent indentation
    "jsx-quotes": [1, "prefer-double"], // enforce the consistent use of either double or single quotes in JSX attributes
    "key-spacing": 0, // enforce consistent spacing between keys and values in object literal properties
    "keyword-spacing": 1, // enforce consistent spacing before and after keywords
    "linebreak-style": 0, // enforce consistent linebreak style
    "lines-around-comment": 0, // require empty lines around comments
    "max-depth": 0, // enforce a maximum depth that blocks can be nested
    "max-len": 0, // enforce a maximum line length
    "max-nested-callbacks": 0, // enforce a maximum depth that callbacks can be nested
    "max-params": 0, // enforce a maximum number of parameters in function definitions
    "max-statements": 0, // enforce a maximum number of statements allowed in function blocks
    "max-statements-per-line": 0, // enforce a maximum number of statements allowed per line
    "new-cap": 0, // require constructor function names to begin with a capital letter
    "new-parens": 0, // require parentheses when invoking a constructor with no arguments
    "newline-after-var": 0, // require or disallow an empty line after var declarations
    "newline-before-return": 0, // require an empty line before return statements
    "newline-per-chained-call": 0, // require a newline after each call in a method chain
    "no-array-constructor": 2, // disallow Array constructors
    "no-bitwise": 2, // disallow bitwise operators
    "no-continue": 0, // disallow continue statements
    "no-inline-comments": 0, // disallow inline comments after code
    "no-lonely-if": 0, // disallow if statements as the only statement in else blocks
    "no-mixed-spaces-and-tabs": [2, "smart-tabs"], // disallow mixed spaces and tabs for indentation
    "no-multiple-empty-lines": 0, // disallow multiple empty lines
    "no-negated-condition": 0, // disallow negated conditions
    "no-nested-ternary": 0, // disallow nested ternary expressions
    "no-new-object": 0, // disallow Object constructors
    "no-plusplus": 0, // disallow the unary operators ++ and --
    "no-restricted-syntax": 0, // disallow specified syntax
    "no-spaced-func": 1, // disallow spacing between function identifiers and their applications
    "no-ternary": 0, // disallow ternary operators
    "no-trailing-spaces": 1, // disallow trailing whitespace at the end of lines
    "no-underscore-dangle": 0, // disallow dangling underscores in identifiers
    "no-unneeded-ternary": 2, // disallow ternary operators when simpler alternatives exist
    "no-whitespace-before-property": 1, // disallow whitespace before properties
    "object-curly-spacing": 0, // enforce consistent spacing inside braces
    "object-property-newline": 0, // enforce placing object properties on separate lines
    "one-var": 0, // enforce variables to be declared either together or separately in functions
    "one-var-declaration-per-line": 0, // require or disallow newlines around var declarations
    "operator-assignment": 0, // require or disallow assignment operator shorthand where possible
    "operator-linebreak": 0, // enforce consistent linebreak style for operators
    "padded-blocks": 0, // require or disallow padding within blocks
    "quote-props": 0, // require quotes around object literal property names
    "quotes": [1, "single"], // enforce the consistent use of either backticks, double, or single quotes
    "require-jsdoc": 0, // require JSDoc comments
    "semi": [1, "always"], // require or disallow semicolons instead of ASI
    "semi-spacing": 1, // enforce consistent spacing before and after semicolons
    "sort-vars": 0, // require variables within the same declaration block to be sorted
    "space-before-blocks": 0, // enforce consistent spacing before blocks
    "space-before-function-paren": 0, // enforce consistent spacing before function definition opening parenthesis
    "space-in-parens": 0, // enforce consistent spacing inside parentheses
    "space-infix-ops": 0, // require spacing around operators
    "space-unary-ops": 0, // enforce consistent spacing before or after unary operators
    "spaced-comment": 0, // enforce consistent spacing after the // or /* in a comment
    "wrap-regex": 0, // require parenthesis around regex literals

    ///// ECMAScript 6
    ///// These rules relate to ES6, also known as ES2015:
    "arrow-body-style": 0, // require braces around arrow function bodies
    "arrow-parens": 0, // require parentheses around arrow function arguments
    "arrow-spacing": [1, {"before": true, "after": true}], // enforce consistent spacing before and after the arrow in arrow functions
    "constructor-super": 2, // require super() calls in constructors
    "generator-star-spacing": 0, // enforce consistent spacing around * operators in generator functions
    "no-class-assign": 2, // disallow reassigning class members
    "no-confusing-arrow": [2, {"allowParens": true }], // disallow arrow functions where they could be confused with comparisons
    "no-const-assign": 2, // disallow reassigning const variables
    "no-dupe-class-members": 2, // disallow duplicate class members
    "no-duplicate-imports": 2, // disallow duplicate module imports
    "no-new-symbol": 2, // disallow new operators with the Symbol object
    "no-restricted-imports": 0, // disallow specified modules when loaded by import
    "no-this-before-super": 2, // disallow this/super before calling super() in constructors
    "no-useless-computed-key": 2, // disallow unnecessary computed property keys in object literals
    "no-useless-constructor": 0, // disallow unnecessary constructors
    "no-var": 2, // require let or const instead of var
    "object-shorthand": 0, // require or disallow method and property shorthand syntax for object literals
    "prefer-arrow-callback": 0, // require arrow functions as callbacks
    "prefer-const": 0, // require const declarations for variables that are never reassigned after declared
    "prefer-reflect": 0, // require Reflect methods where applicable
    "prefer-rest-params": 0, // require rest parameters instead of arguments
    "prefer-spread": 2, // require spread operators instead of .apply()
    "prefer-template": 0, // require template literals instead of string concatenation
    "require-yield": 2, // require generator functions to contain yield
    "sort-imports": 0, // enforce sorted import declarations within modules
    "template-curly-spacing": 0, // require or disallow spacing around embedded expressions of template strings
    "yield-star-spacing": 0 // require or disallow spacing around the * in yield* expressions
  }
}