tools/lint-config.js
module.exports = {
parser: 'babel-eslint',
parserOptions: {
allowImportExportEverywhere: true
},
env: {
browser: true,
node: true,
es6: true,
jasmine: true
},
plugins: [ 'react' ],
rules: {
//
// Possible Errors
//
// The following rules point out areas where you might have made mistakes.
//
// disallow or enforce trailing commas
'comma-dangle': 2,
// disallow assignment in conditional expressions
'no-cond-assign': 2,
// disallow use of console (off by default in the node environment)
'no-console': 1,
// 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 arguments in functions
'no-dupe-args': 2,
// disallow duplicate keys when creating object literals
'no-dupe-keys': 2,
// disallow a duplicate case label.
'no-duplicate-case': 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': 2,
// 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,
// 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': 2,
// Ensure that the results of typeof are compared against a valid string
'valid-typeof': 2,
//
// Best Practices
//
// These are rules designed to prevent you from making mistakes.
// They either prescribe a better way of doing something or help you avoid footguns.
//
// treat var statements as if they were block scoped (off by default). 0: deep destructuring is not compatible
// https://github.com/eslint/eslint/issues/1863
'block-scoped-var': 0,
// specify the maximum cyclomatic complexity allowed in a program (off by default)
complexity: 0,
// require return statements to either always or never specify values
'consistent-return': 2,
// specify curly brace conventions for all control statements
curly: 2,
// require default case in switch statements (off by default)
'default-case': 2,
// encourages use of dot notation whenever possible
'dot-notation': 2,
// require the use of === and !==
eqeqeq: 2,
// 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 division operators explicitly at beginning of regular expression (off by default)
'no-div-regex': 2,
// disallow else after a return in an if (off by default)
'no-else-return': 2,
// disallow use of labels for anything other then loops and switches
'no-labels': 2,
// disallow comparisons to null without a type-checking operator (off by default)
'no-eq-null': 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 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 reassignment of function parameters (off by default)
'no-param-reassign': 2,
// disallow use of process.env (off by default)
'no-process-env': 2,
// 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 (off by default)
'no-self-compare': 2,
// disallow use of comma operator
'no-sequences': 2,
// restrict what can be thrown as an exception (off by default)
'no-throw-literal': 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': 2, // e.g. TODO or FIXME (off by default)
'no-warning-comments': [ 0, { terms: [ 'todo', 'fixme' ], location: 'start' } ],
// disallow use of the with statement
'no-with': 2,
// require use of the second argument for parseInt() (off by default)
radix: 2,
// requires to declare all vars on top of their containing scope (off by default)
'vars-on-top': 2,
// require immediate function invocation to be wrapped in parentheses (off by default)
'wrap-iife': 2,
// require or disallow Yoda conditions
yoda: 2,
//
// Strict Mode
//
// These rules relate to using strict mode.
//
// controls location of Use Strict Directives. 0: required by `babel-eslint`
strict: 0,
//
// Variables
//
// These rules have to do with variable declarations.
//
// 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 undefined when initializing variables
'no-undef-init': 2,
// disallow use of undefined variable (off by default)
'no-undefined': 2,
// disallow declaration of variables that are not used in the code
'no-unused-vars': 2,
// disallow use of variables before they are defined
'no-use-before-define': 2,
//
// Stylistic Issues
//
// These rules are purely matters of style and are quite subjective.
//
// this option sets a specific tab width for your code (off by default)
indent: [ 1, 2 ],
// enforce one true brace style (off by default)
'brace-style': 1,
// require camel case names
camelcase: 1,
// enforce spacing before and after comma
'comma-spacing': [ 1, { before: false, after: true } ],
// enforce one true comma style (off by default)
'comma-style': [ 1, 'last' ],
// enforces consistent naming when capturing the current execution context (off by default)
'consistent-this': [ 1, '_this' ],
// enforce newline at the end of file, with no multiple empty lines
'eol-last': 1,
// 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,
// enforces spacing between keys and values in object literal properties
'key-spacing': [ 1, { beforeColon: false, afterColon: true } ],
// 'keyword-spacing': 2,
// specify the maximum depth callbacks can be nested (off by default)
'max-nested-callbacks': [ 1, 4 ],
// require a capital letter for constructors
'new-cap': [ 1, { newIsCap: true, capIsNew: false } ],
// disallow the omission of parentheses when invoking a constructor with no arguments
'new-parens': 1,
// allow/disallow an empty newline after var statement (off by default)
'newline-after-var': 0,
// disallow use of the Array constructor
'no-array-constructor': 1,
// disallow comments inline after code (off by default)
'no-inline-comments': 1,
// disallow if as the only statement in an else block (off by default)
'no-lonely-if': 1,
// disallow mixed spaces and tabs for indentation
'no-mixed-spaces-and-tabs': 1,
// disallow multiple empty lines (off by default)
'no-multiple-empty-lines': [ 1, { max: 2 } ],
// disallow nested ternary expressions (off by default)
'no-nested-ternary': 1,
// disallow use of the Object constructor
'no-new-object': 1,
// disallow space between function identifier and application
'no-spaced-func': 1,
// disallow the use of ternary operators (off by default)
'no-ternary': 0,
// disallow trailing whitespace at the end of lines
'no-trailing-spaces': 1,
// disallow dangling underscores in identifiers
// 'no-underscore-dangle': 1,
// allow just one var statement per function (off by default)
'one-var': [ 1, 'never' ],
// require assignment operator shorthand where possible or prohibit it entirely (off by default)
'operator-assignment': [ 1, 'always' ],
// enforce padding within blocks (off by default)
'padded-blocks': [ 1, 'never' ],
// require quotes around object literal property names (off by default)
'quote-props': [ 1, 'as-needed' ],
// specify whether double or single quotes should be used
quotes: [ 1, 'single' ],
// require or disallow use of semicolons instead of ASI
semi: [ 1, 'always' ],
// enforce spacing before and after semicolons
'semi-spacing': [ 1, { before: false, after: true } ],
// sort variables within the same declaration block (off by default)
'sort-vars': 0,
// require a space after certain keywords (off by default)
'keyword-spacing': 1,
// require or disallow space before blocks (off by default)
'space-before-blocks': [ 1, 'always' ],
// require or disallow space before function opening parenthesis (off by default)
'space-before-function-paren': [ 1, { anonymous: 'always', named: 'never' } ],
// require a space before a } and after {
'object-curly-spacing': [ 1, 'always' ],
// require a space before a ] and after [
'array-bracket-spacing': [ 1, 'always' ],
// no space surrounding a computed property
'computed-property-spacing': [ 1, 'never' ],
// require or disallow spaces inside parentheses (off by default)
'space-in-parens': [ 1, 'never' ],
// require spaces around operators
'space-infix-ops': [ 2, { int32Hint: false } ],
// Require or disallow spaces before/after unary operators (words on by default, nonwords off by default)
'space-unary-ops': [ 1, { words: true, nonwords: false } ],
// require or disallow a space immediately following the // in a line comment (off by default)
'spaced-comment': [ 1, 'always' ],
// require regex literals to be wrapped in parentheses (off by default)
'wrap-regex': 0,
//
// ECMAScript 6
//
// These rules are only relevant to ES6 environments and are off by default.
//
// require let or const instead of var (off by default)
'no-var': 2,
// enforce the spacing around the * in generator functions (off by default)
'generator-star-spacing': [ 2, 'before' ],
//
// Legacy
//
// The following rules are included for compatibility with JSHint and JSLint.
// While the names of the rules may not match up with the JSHint/JSLint counterpart,
// the functionality is the same.
//
// specify the maximum depth that blocks can be nested (off by default)
'max-depth': [ 2, 3 ],
// specify the maximum length of a line in your program (off by default)
'max-len': [ 2, 120, 2 ],
// limits the number of parameters that can be used in the function declaration. (off by default)
'max-params': [ 2, 5 ],
// 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': 0,
// disallow use of unary operators, ++ and -- (off by default)
'no-plusplus': 2,
//
// eslint-plugin-react
//
// React specific linting rules for ESLint
//
// Prevent missing displayName in a React component definition
'react/display-name': 0,
// Enforce quote style for JSX attributes
// 'react/jsx-quotes': [2, 'double', 'avoid-escape'],
// Disallow undeclared variables in JSX
'react/jsx-no-undef': 2,
// Enforce props alphabetical sorting
'react/jsx-sort-props': 1,
// Prevent React to be incorrectly marked as unused
'react/jsx-uses-react': 2,
// Prevent variables used in JSX to be incorrectly marked as unused
'react/jsx-uses-vars': 2,
// Prevent usage of setState in componentDidMount
'react/no-did-mount-set-state': 2,
// Prevent usage of setState in componentDidUpdate
'react/no-did-update-set-state': 2,
// Prevent multiple component definition per file
'react/no-multi-comp': 0,
// Prevent usage of unknown DOM property
'react/no-unknown-property': 2,
// Prevent missing props validation in a React component definition
'react/prop-types': 2,
// Prevent missing React when using JSX
'react/react-in-jsx-scope': 2,
// Prevent extra closing tags for components without children
'react/self-closing-comp': 2
}
};