.eslintrc.js 15 KB

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  1. module.exports = {
  2. "extends": "eslint:recommended",
  3. "env": {
  4. "browser": true,
  5. "node": true,
  6. "es6": true
  7. },
  8. "globals": {
  9. // From Meteor core.
  10. "$": true,
  11. "jQuery": true,
  12. "Meteor": true,
  13. "Mongo": true,
  14. "Template": true,
  15. "Accounts": true,
  16. "Session": true,
  17. // From iron:router.
  18. "Router": true,
  19. // from our app.
  20. "Images": true
  21. },
  22. "plugins": ["react"],
  23. "ecmaFeatures": {
  24. "arrowFunctions": true,
  25. "binaryLiterals": true,
  26. "blockBindings": true,
  27. "classes": true,
  28. "defaultParams": true,
  29. "destructuring": true,
  30. "experimentalObjectRestSpread": true,
  31. "forOf": true,
  32. "generators": true,
  33. "globalReturn": true,
  34. "jsx": true,
  35. "modules": true,
  36. "objectLiteralComputedProperties": true,
  37. "objectLiteralDuplicateProperties": true,
  38. "objectLiteralShorthandMethods": true,
  39. "objectLiteralShorthandProperties": true,
  40. "octalLiterals": true,
  41. "regexUFlag": true,
  42. "regexYFlag": true,
  43. "spread": true,
  44. "superInFunctions": true,
  45. "templateStrings": true,
  46. "unicodeCodePointEscapes": true
  47. },
  48. "rules": {
  49. //
  50. // Possible Errors
  51. //
  52. // The following rules point out areas where you might have made mistakes.
  53. //
  54. "comma-dangle": 2, // disallow or enforce trailing commas
  55. "no-cond-assign": 2, // disallow assignment in conditional expressions
  56. "no-console": 1, // disallow use of console (off by default in the node environment)
  57. "no-constant-condition": 2, // disallow use of constant expressions in conditions
  58. "no-control-regex": 2, // disallow control characters in regular expressions
  59. "no-debugger": 2, // disallow use of debugger
  60. "no-dupe-args": 2, // disallow duplicate arguments in functions
  61. "no-dupe-keys": 2, // disallow duplicate keys when creating object literals
  62. "no-duplicate-case": 2, // disallow a duplicate case label.
  63. "no-empty": 2, // disallow empty statements
  64. "no-empty-character-class": 2, // disallow the use of empty character classes in regular expressions
  65. "no-ex-assign": 2, // disallow assigning to the exception in a catch block
  66. "no-extra-boolean-cast": 2, // disallow double-negation boolean casts in a boolean context
  67. "no-extra-parens": 0, // disallow unnecessary parentheses (off by default)
  68. "no-extra-semi": 2, // disallow unnecessary semicolons
  69. "no-func-assign": 2, // disallow overwriting functions written as function declarations
  70. "no-inner-declarations": 2, // disallow function or variable declarations in nested blocks
  71. "no-invalid-regexp": 2, // disallow invalid regular expression strings in the RegExp constructor
  72. "no-irregular-whitespace": 2, // disallow irregular whitespace outside of strings and comments
  73. "no-negated-in-lhs": 2, // disallow negation of the left operand of an in expression
  74. "no-obj-calls": 2, // disallow the use of object properties of the global object (Math and JSON) as functions
  75. "no-regex-spaces": 2, // disallow multiple spaces in a regular expression literal
  76. "no-sparse-arrays": 2, // disallow sparse arrays
  77. "no-unreachable": 2, // disallow unreachable statements after a return, throw, continue, or break statement
  78. "quote-props": 0, // disallow reserved words being used as object literal keys (off by default)
  79. "use-isnan": 2, // disallow comparisons with the value NaN
  80. "valid-jsdoc": 2, // Ensure JSDoc comments are valid (off by default)
  81. "valid-typeof": 2, // Ensure that the results of typeof are compared against a valid string
  82. //
  83. // Best Practices
  84. //
  85. // These are rules designed to prevent you from making mistakes.
  86. // They either prescribe a better way of doing something or help you avoid footguns.
  87. //
  88. "block-scoped-var": 0, // 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
  89. "complexity": 0, // specify the maximum cyclomatic complexity allowed in a program (off by default)
  90. "consistent-return": 2, // require return statements to either always or never specify values
  91. "curly": 2, // specify curly brace conventions for all control statements
  92. "default-case": 2, // require default case in switch statements (off by default)
  93. "dot-notation": 2, // encourages use of dot notation whenever possible
  94. "eqeqeq": 2, // require the use of === and !==
  95. "guard-for-in": 2, // make sure for-in loops have an if statement (off by default)
  96. "no-alert": 2, // disallow the use of alert, confirm, and prompt
  97. "no-caller": 2, // disallow use of arguments.caller or arguments.callee
  98. "no-div-regex": 2, // disallow division operators explicitly at beginning of regular expression (off by default)
  99. "no-else-return": 2, // disallow else after a return in an if (off by default)
  100. "no-empty-label": 2, // disallow use of labels for anything other then loops and switches
  101. "no-eq-null": 2, // disallow comparisons to null without a type-checking operator (off by default)
  102. "no-eval": 2, // disallow use of eval()
  103. "no-extend-native": 2, // disallow adding to native types
  104. "no-extra-bind": 2, // disallow unnecessary function binding
  105. "no-fallthrough": 2, // disallow fallthrough of case statements
  106. "no-floating-decimal": 2, // disallow the use of leading or trailing decimal points in numeric literals (off by default)
  107. "no-implied-eval": 2, // disallow use of eval()-like methods
  108. "no-iterator": 2, // disallow usage of __iterator__ property
  109. "no-labels": 2, // disallow use of labeled statements
  110. "no-lone-blocks": 2, // disallow unnecessary nested blocks
  111. "no-loop-func": 2, // disallow creation of functions within loops
  112. "no-multi-spaces": 2, // disallow use of multiple spaces
  113. "no-multi-str": 2, // disallow use of multiline strings
  114. "no-native-reassign": 2, // disallow reassignments of native objects
  115. "no-new": 2, // disallow use of new operator when not part of the assignment or comparison
  116. "no-new-func": 2, // disallow use of new operator for Function object
  117. "no-new-wrappers": 2, // disallows creating new instances of String,Number, and Boolean
  118. "no-octal": 2, // disallow use of octal literals
  119. "no-octal-escape": 2, // disallow use of octal escape sequences in string literals, such as var foo = "Copyright \251";
  120. "no-param-reassign": 2, // disallow reassignment of function parameters (off by default)
  121. "no-process-env": 2, // disallow use of process.env (off by default)
  122. "no-proto": 2, // disallow usage of __proto__ property
  123. "no-redeclare": 2, // disallow declaring the same variable more then once
  124. "no-return-assign": 2, // disallow use of assignment in return statement
  125. "no-script-url": 2, // disallow use of javascript: urls.
  126. "no-self-compare": 2, // disallow comparisons where both sides are exactly the same (off by default)
  127. "no-sequences": 2, // disallow use of comma operator
  128. "no-throw-literal": 2, // restrict what can be thrown as an exception (off by default)
  129. "no-unused-expressions": 2, // disallow usage of expressions in statement position
  130. "no-void": 0, // disallow use of void operator (off by default)
  131. "no-warning-comments": [0, {"terms": ["todo", "fixme"], "location": "start"}], // disallow usage of configurable warning terms in comments": 2, // e.g. TODO or FIXME (off by default)
  132. "no-with": 2, // disallow use of the with statement
  133. "radix": 2, // require use of the second argument for parseInt() (off by default)
  134. "vars-on-top": 2, // requires to declare all vars on top of their containing scope (off by default)
  135. "wrap-iife": 2, // require immediate function invocation to be wrapped in parentheses (off by default)
  136. "yoda": 2, // require or disallow Yoda conditions
  137. //
  138. // Strict Mode
  139. //
  140. // These rules relate to using strict mode.
  141. //
  142. "strict": 0, // controls location of Use Strict Directives. 0: required by `babel-eslint`
  143. //
  144. // Variables
  145. //
  146. // These rules have to do with variable declarations.
  147. //
  148. "no-catch-shadow": 2, // disallow the catch clause parameter name being the same as a variable in the outer scope (off by default in the node environment)
  149. "no-delete-var": 2, // disallow deletion of variables
  150. "no-label-var": 2, // disallow labels that share a name with a variable
  151. "no-shadow": 2, // disallow declaration of variables already declared in the outer scope
  152. "no-shadow-restricted-names": 2, // disallow shadowing of names such as arguments
  153. "no-undef": 2, // disallow use of undeclared variables unless mentioned in a /*global */ block
  154. "no-undef-init": 2, // disallow use of undefined when initializing variables
  155. "no-undefined": 2, // disallow use of undefined variable (off by default)
  156. "no-unused-vars": 2, // disallow declaration of variables that are not used in the code
  157. "no-use-before-define": 2, // disallow use of variables before they are defined
  158. //
  159. // Stylistic Issues.
  160. //
  161. // These rules are purely matters of style and are quite subjective.
  162. //
  163. "array-bracket-spacing": [2, "never"],
  164. "indent": [2, 2, { SwitchCase: 1 }], // this option sets a specific tab width for your code (off by default)
  165. "brace-style": [2, "stroustrup", {"allowSingleLine": true}],
  166. "camelcase": 1, // require camel case names
  167. "comma-spacing": [1, {"before": false, "after": true}], // enforce spacing before and after comma
  168. "comma-style": [1, "last"], // enforce one true comma style (off by default)
  169. "computed-property-spacing": [2, "never"],
  170. "consistent-this": [1, "_this"], // enforces consistent naming when capturing the current execution context (off by default)
  171. "eol-last": 2, // enforce newline at the end of file, with no multiple empty lines
  172. "func-names": 0, // require function expressions to have a name (off by default)
  173. "func-style": 0, // enforces use of function declarations or expressions (off by default)
  174. "jsx-quotes": [1, "prefer-double"],
  175. "key-spacing": [1, {"beforeColon": false, "afterColon": true}], // enforces spacing between keys and values in object literal properties
  176. "linebreak-style": [2, "unix"],
  177. "max-nested-callbacks": [1, 3], // specify the maximum depth callbacks can be nested (off by default)
  178. "new-cap": [1, {"newIsCap": true, "capIsNew": false}], // require a capital letter for constructors
  179. "new-parens": 1, // disallow the omission of parentheses when invoking a constructor with no arguments
  180. "newline-after-var": 0, // allow/disallow an empty newline after var statement (off by default)
  181. "no-array-constructor": 1, // disallow use of the Array constructor
  182. "no-inline-comments": 0, // disallow comments inline after code (off by default)
  183. "no-lonely-if": 1, // disallow if as the only statement in an else block (off by default)
  184. "no-mixed-spaces-and-tabs": 1, // disallow mixed spaces and tabs for indentation
  185. "no-multiple-empty-lines": [1, {"max": 2}], // disallow multiple empty lines (off by default)
  186. "no-nested-ternary": 1, // disallow nested ternary expressions (off by default)
  187. "no-new-object": 1, // disallow use of the Object constructor
  188. "no-spaced-func": 1, // disallow space between function identifier and application
  189. "no-ternary": 0, // disallow the use of ternary operators (off by default)
  190. "no-trailing-spaces": 1, // disallow trailing whitespace at the end of lines
  191. "no-underscore-dangle": 1, // disallow dangling underscores in identifiers
  192. "object-curly-spacing": [2, "always"],
  193. "one-var": [2, "never"], // allow just one var statement per function (off by default)
  194. "operator-assignment": [1, "never"], // require assignment operator shorthand where possible or prohibit it entirely (off by default)
  195. "padded-blocks": [1, "never"], // enforce padding within blocks (off by default)
  196. "quotes": [1, "double"], // specify whether double or single quotes should be used
  197. "semi": [2, "always"], // require or disallow use of semicolons instead of ASI
  198. "semi-spacing": [1, {"before": false, "after": true}], // enforce spacing before and after semicolons
  199. "sort-vars": 0, // sort variables within the same declaration block (off by default)
  200. "space-after-keywords": [1, "always"], // require a space after certain keywords (off by default)
  201. "space-before-blocks": [1, "always"], // require or disallow space before blocks (off by default)
  202. "space-before-function-paren": [1, {"anonymous": "always", "named": "never"}], // require or disallow space before function opening parenthesis (off by default)
  203. "space-in-parens": [1, "never"], // require or disallow spaces inside parentheses (off by default)
  204. "space-infix-ops": [2, {"int32Hint": true}], // require spaces around operators
  205. "space-return-throw-case": [2], // require a space after return, throw, and case
  206. "space-unary-ops": [1, {"words": true, "nonwords": false}], // Require or disallow spaces before/after unary operators (words on by default, nonwords off by default)
  207. "spaced-comment": [1, "always"], // require or disallow a space immediately following the // in a line comment (off by default)
  208. "wrap-regex": 0, // require regex literals to be wrapped in parentheses (off by default)
  209. //
  210. // ECMAScript 6
  211. //
  212. // These rules are only relevant to ES6 environments and are off by default.
  213. //
  214. "no-var": 2, // require let or const instead of var (off by default)
  215. "generator-star-spacing": [2, "before"], // enforce the spacing around the * in generator functions (off by default)
  216. //
  217. // Legacy
  218. //
  219. // The following rules are included for compatibility with JSHint and JSLint.
  220. // While the names of the rules may not match up with the JSHint/JSLint counterpart,
  221. // the functionality is the same.
  222. //
  223. "max-depth": [2, 3], // specify the maximum depth that blocks can be nested (off by default)
  224. "max-len": [2, 200, 2], // specify the maximum length of a line in your program (off by default)
  225. "max-params": [2, 5], // limits the number of parameters that can be used in the function declaration. (off by default)
  226. "max-statements": 0, // specify the maximum number of statement allowed in a function (off by default)
  227. "no-bitwise": 0, // disallow use of bitwise operators (off by default)
  228. "no-plusplus": 2, // disallow use of unary operators, ++ and -- (off by default)
  229. //
  230. // eslint-plugin-react
  231. //
  232. // React specific linting rules for ESLint
  233. //
  234. "react/display-name": 0, // Prevent missing displayName in a React component definition
  235. "react/jsx-no-undef": 2, // Disallow undeclared variables in JSX
  236. "react/jsx-sort-props": 0, // Enforce props alphabetical sorting
  237. "react/jsx-uses-react": 2, // Prevent React to be incorrectly marked as unused
  238. "react/jsx-uses-vars": 2, // Prevent variables used in JSX to be incorrectly marked as unused
  239. "react/no-did-mount-set-state": 1, // Prevent usage of setState in componentDidMount
  240. "react/no-did-update-set-state": 1, // Prevent usage of setState in componentDidUpdate
  241. "react/no-multi-comp": 0, // Prevent multiple component definition per file
  242. "react/no-unknown-property": 2, // Prevent usage of unknown DOM property
  243. "react/prop-types": 2, // Prevent missing props validation in a React component definition
  244. "react/react-in-jsx-scope": 0, // Prevent missing React when using JSX
  245. "react/self-closing-comp": 2, // Prevent extra closing tags for components without children
  246. "react/wrap-multilines": 2 // Prevent missing parentheses around multilines JSX
  247. }
  248. };