{ "env": { "browser": true, "node": true, "es6": true }, "parser": "babel-eslint", "plugins": ["react"], "globals": [ "jest", ], "ecmaFeatures": { "arrowFunctions": true, "binaryLiterals": true, "blockBindings": true, "classes": true, "defaultParams": true, "destructuring": true, "forOf": true, "generators": true, "modules": true, "objectLiteralComputedProperties": true, "objectLiteralDuplicateProperties": true, "objectLiteralShorthandMethods": true, "objectLiteralShorthandProperties": true, "octalLiterals": true, "regexUFlag": true, "regexYFlag": true, "spread": true, "superInFunctions": true, "templateStrings": true, "unicodeCodePointEscapes": true, "globalReturn": true, "jsx": true }, "rules": { // //Possible Errors // // The following rules point out areas where you might have made mistakes. // "comma-dangle": 2, // disallow or enforce trailing commas "no-cond-assign": 2, // disallow assignment in conditional expressions "no-console": 0, // disallow use of console (off by default in the node environment) "no-constant-condition": 2, // disallow use of constant expressions in conditions "no-control-regex": 2, // disallow control characters in regular expressions "no-debugger": 2, // disallow use of debugger "no-dupe-args": 2, // disallow duplicate arguments in functions "no-dupe-keys": 2, // disallow duplicate keys when creating object literals "no-duplicate-case": 2, // disallow a duplicate case label. "no-empty-character-class": 2, //disallow the use of empty character classes in regular expressions "no-empty": 2, // disallow empty statements "no-ex-assign": 2, // disallow assigning to the exception in a catch block "no-extra-boolean-cast": 2, // disallow double-negation boolean casts in a boolean context "no-extra-parens": 0, // disallow unnecessary parentheses "no-extra-semi": 2, // disallow unnecessary semicolons "no-func-assign": 2, // disallow overwriting functions written as function declarations "no-inner-declarations": 2, // disallow function or variable declarations in nested blocks "no-invalid-regexp": 2, // disallow invalid regular expression strings in the RegExp constructor "no-irregular-whitespace": 2, // disallow irregular whitespace outside of strings and comments "no-negated-in-lhs": 2, // disallow negation of the left operand of an in expression "no-obj-calls": 2, // disallow the use of object properties of the global object (Math and JSON) as functions "no-regex-spaces": 2, // disallow multiple spaces in a regular expression literal "no-sparse-arrays": 2, // disallow sparse arrays (recommended) "no-unexpected-multiline": 2, // Avoid code that looks like two expressions but is actually one "no-unreachable": 2, // disallow unreachable statements after a return, throw, continue, or break statement "use-isnan": 2, // disallow comparisons with the value NaN "valid-jsdoc": 2, // Ensure JSDoc comments are valid "valid-typeof": 2, // Ensure that the results of typeof are compared against a valid string // // 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. // "accessor-pairs": 2, // Enforces getter/setter pairs in objects "block-scoped-var": 0, // treat var statements as if they were block scoped. 0: deep destructuring is not compatible https://github.com/eslint/eslint/issues/1863 "complexity": 0, // specify the maximum cyclomatic complexity allowed in a program "consistent-return": 2, // require return statements to either always or never specify values "curly": 2, // specify curly brace conventions for all control statements "default-case": 2, // require default case in switch statements "dot-location": [2, "property"], // enforces consistent newlines before or after dots "dot-notation": 2, // encourages use of dot notation whenever possible "eqeqeq": 2, // require the use of === and !== "guard-for-in": 2, // make sure for-in loops have an if statement "no-alert": 2, // disallow the use of alert, confirm, and prompt "no-caller": 2, // disallow use of arguments.caller or arguments.callee "no-case-declarations": 2, // disallow lexical declarations in case clauses "no-div-regex": 2, // disallow division operators explicitly at beginning of regular expression "no-else-return": 2, // disallow else after a return in an if "no-empty-pattern": 2, // disallow use of empty destructuring patterns "no-eq-null": 2, // disallow comparisons to null without a type-checking operator "no-eval": 2, // disallow use of eval() "no-extend-native": 2, // disallow adding to native types "no-extra-bind": 2, // disallow unnecessary function binding "no-fallthrough": 2, // disallow fallthrough of case statements "no-floating-decimal": 2, // disallow the use of leading or trailing decimal points in numeric literals "no-implicit-coercion": [2, {"boolean": false, "number": true, "string": true}], // disallow the type conversions with shorter notations "no-implied-eval": 2, // disallow use of eval()-like methods "no-invalid-this": 2, // disallow this keywords outside of classes or class-like objects "no-iterator": 2, // disallow usage of __iterator__ property "no-labels": 2, // disallow use of labeled statements "no-lone-blocks": 2, // disallow unnecessary nested blocks "no-loop-func": 2, // disallow creation of functions within loops "no-magic-numbers": 0, // disallow the use of magic numbers "no-multi-spaces": 2, // disallow use of multiple spaces "no-multi-str": 2, // disallow use of multiline strings "no-native-reassign": 2, // disallow reassignments of native objects "no-new-func": 2, // disallow use of new operator for Function object "no-new-wrappers": 2, // disallows creating new instances of String,Number, and Boolean "no-new": 2, // disallow use of the new operator when not part of an assignment or comparison "no-octal-escape": 2, // disallow use of octal escape sequences in string literals, such as var foo = "Copyright \251"; "no-octal": 2, // disallow use of octal literals "no-param-reassign": 2, // disallow reassignment of function parameters "no-process-env": 0, // disallow use of process.env "no-proto": 2, // disallow usage of __proto__ property "no-redeclare": 2, // disallow declaring the same variable more than once "no-return-assign": 2, // disallow use of assignment in return statement "no-script-url": 2, // disallow use of javascript: urls. "no-self-compare": 2, // disallow comparisons where both sides are exactly the same "no-sequences": 2, // disallow use of the comma operator "no-throw-literal": 2, // restrict what can be thrown as an exception "no-unused-expressions": 2, // disallow usage of expressions in statement position "no-useless-call": 2, // disallow unnecessary .call() and .apply() "no-useless-concat": 2, // disallow unnecessary concatenation of literals or template literals "no-void": 2, // disallow use of the void operator "no-warning-comments": [0, {"terms": ["todo", "fixme"], "location": "start"}], // disallow usage of configurable warning terms in comments": 2, // e.g. TODO or FIXME "no-with": 2, // disallow use of the with statement "radix": 2, // require use of the second argument for parseInt() "vars-on-top": 2, // require declaration of all vars at the top of their containing scope "wrap-iife": 2, // require immediate function invocation to be wrapped in parentheses "yoda": 2, // require or disallow Yoda conditions // // Strict Mode // // These rules relate to using strict mode. // "strict": 0, // controls location of Use Strict Directives. 0: required by `babel-eslint` // // Variables // // These rules have to do with variable declarations. // "init-declarations": 0, // enforce or disallow variable initializations at definition "no-catch-shadow": 2, // disallow the catch clause parameter name being the same as a variable in the outer scope "no-delete-var": 2, // disallow deletion of variables "no-label-var": 2, // disallow labels that share a name with a variable "no-shadow-restricted-names": 2, // disallow shadowing of names such as arguments "no-shadow": 2, // disallow declaration of variables already declared in the outer scope "no-undef-init": 2, // disallow use of undefined when initializing variables "no-undef": 2, // disallow use of undeclared variables unless mentioned in a /*global */ block "no-undefined": 2, // disallow use of undefined variable "no-unused-vars": 2, // disallow declaration of variables that are not used in the code "no-use-before-define": 0, // disallow use of variables before they are defined // // Node.js and CommonJS // // These rules are specific to JavaScript running on Node.js or using CommonJS in the browser. // "callback-return": 2, // enforce return after a callback "global-require": 0, // disallow require() outside of the top-level module scope "handle-callback-err": 2, // enforce error handling in callbacks "no-mixed-requires": 2, // disallow mixing regular variable and require declarations "no-new-require": 2, // disallow use of new operator with the require function "no-path-concat": 2, // disallow string concatenation with __dirname and __filename "no-process-exit": 0, // disallow process.exit() "no-restricted-modules": 0, // restrict usage of specified node modules "no-sync": 0, // disallow use of synchronous methods // //Stylistic Issues // // These rules are purely matters of style and are quite subjective. // "array-bracket-spacing": [2, "never"], // enforce spacing inside array brackets "block-spacing": [2, "always"], // disallow or enforce spaces inside of single line blocks "brace-style": 2, // enforce one true brace style "camelcase": 2, // require camel case names "comma-spacing": [2, {"before": false, "after": true}], // enforce spacing before and after comma "comma-style": [2, "last"], // enforce one true comma style "computed-property-spacing": [2, "never"], //require or disallow padding inside computed properties "consistent-this": [2, "_this"], // enforce consistent naming when capturing the current execution context "eol-last": 2, // enforce newline at the end of file, with no multiple empty lines "func-names": 0, // require function expressions to have a name "func-style": 0, // enforce use of function declarations or expressions "id-length": 0, // this option enforces minimum and maximum identifier lengths (variable names, property names etc.) "id-match": 0, // require identifiers to match the provided regular expression "indent": [2, 2, {"SwitchCase": 1}], // specify tab or space width for your code (fixable) "jsx-quotes": [2, "prefer-double"], // specify whether double or single quotes should be used in JSX attributes "key-spacing": [2, {"beforeColon": false, "afterColon": true}], // enforce spacing between keys and values in object literal properties "linebreak-style": [2, "unix"], //disallow mixed 'LF' and 'CRLF' as linebreaks "lines-around-comment": [2, {"beforeBlockComment": true, "afterBlockComment": false, "afterLineComment": false}], // enforce empty lines around comments "max-nested-callbacks": [2, 3], // specify the maximum depth callbacks can be nested "new-cap": [2, {"newIsCap": true, "capIsNew": false}], // require a capital letter for constructors "new-parens": 2, // disallow the omission of parentheses when invoking a constructor with no arguments "newline-after-var": [2, "always"], // require or disallow an empty newline after variable declarations "no-array-constructor": 2, // disallow use of the Array constructor "no-continue": 2, //disallow use of the continue statement "no-inline-comments": 2, // disallow comments inline after code "no-lonely-if": 2, // disallow if as the only statement in an else block "no-mixed-spaces-and-tabs": 2, // disallow mixed spaces and tabs for indentation "no-multiple-empty-lines": [2, {"max": 2}], // disallow multiple empty lines "no-negated-condition": 2, // disallow negated conditions "no-nested-ternary": 2, // disallow nested ternary expressions "no-new-object": 2, // disallow use of the Object constructor "no-restricted-syntax": [2, "WithStatement"], // disallow use of certain syntax in code "no-spaced-func": 2, // disallow space between function identifier and application "no-ternary": 0, // disallow the use of ternary operators "no-trailing-spaces": 2, // disallow trailing whitespace at the end of lines "no-underscore-dangle": 0, // disallow dangling underscores in identifiers "no-unneeded-ternary": 2, // disallow the use of ternary operators when a simpler alternative exists "object-curly-spacing": [2, "always"], // require or disallow padding inside curly braces "one-var": [2, "never"], // require or disallow one variable declaration per function "operator-assignment": [2, "never"], // require assignment operator shorthand where possible or prohibit it entirely "operator-linebreak": [2, "after"], // enforce operators to be placed before or after line breaks "padded-blocks": [2, "never"], // enforce padding within blocks "quote-props": [2, "as-needed"], // require quotes around object literal property names "quotes": [2, "single"], // specify whether backticks, double or single quotes should be used (fixable) "require-jsdoc": 0, // Require JSDoc comment "semi-spacing": [2, {"before": false, "after": true}], // enforce spacing before and after semicolons "semi": [2, "always"], // require or disallow use of semicolons instead of ASI "sort-vars": 0, // sort variables within the same declaration block "space-after-keywords": [2, "always"], // require a space after certain keywords "space-before-blocks": [2, "always"], // require or disallow a space before blocks "space-before-function-paren": [2, {"anonymous": "always", "named": "never"}], // require or disallow a space before function opening parenthesis "space-before-keywords": [2, "always"], // require a space before certain keywords (fixable) "space-in-parens": [2, "never"], // require or disallow spaces inside parentheses "space-infix-ops": 2, // require spaces around operators "space-return-throw-case": 2, // require a space after return, throw, and case "space-unary-ops": [2, {"words": true, "nonwords": false}], // require or disallow spaces before/after unary operators (words on by default, nonwords off by default) "spaced-comment": [2, "always"], //require or disallow a space immediately following the // or /* in a comment "wrap-regex": 0, // require regex literals to be wrapped in parentheses // // ECMAScript 6 // // These rules are only relevant to ES6 environments and are off by default. // "arrow-body-style": [2, "as-needed"], // require braces in arrow function body "arrow-parens": [2, "always"], // require parens in arrow function arguments "arrow-spacing": 2, // require space before/after arrow function's arrow "constructor-super": 2, // verify calls of super() in constructors "generator-star-spacing": [2, "before"], // enforce spacing around the * in generator functions "no-arrow-condition": 0, // disallow arrow functions where a condition is expected "no-class-assign": 2, // disallow modifying variables of class declarations "no-const-assign": 2, // disallow modifying variables that are declared using const "no-dupe-class-members": 2, // disallow duplicate name in class members "no-this-before-super": 2, // disallow use of this/super before calling super() in constructors. "no-var": 2, // require let or const instead of var "object-shorthand": 2, // require method and property shorthand syntax for object literals "prefer-arrow-callback": 2, // suggest using arrow functions as callbacks "prefer-const": 2, // suggest using const declaration for variables that are never modified after declared "prefer-reflect": 0, // suggest using Reflect methods where applicable "prefer-spread": 2, // suggest using the spread operator instead of .apply(). "prefer-template": 2, // suggest using template literals instead of strings concatenation "require-yield": 2, // disallow generator functions that do not have yield // // 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. // "max-depth": [2, 3], // specify the maximum depth that blocks can be nested "max-len": [2, 100, 2], // specify the maximum length of a line in your program "max-params": [2, 5], // limits the number of parameters that can be used in the function declaration. "max-statements": 0, // specify the maximum number of statement allowed in a function "no-bitwise": 0, // disallow use of bitwise operators "no-plusplus": 2, // disallow use of unary operators, ++ and -- // // eslint-plugin-react // // React specific linting rules for ESLint // "react/display-name": 0, // Prevent missing displayName in a React component definition "react/forbid-prop-types": [2, { "forbid": ["any", "object"] }], "react/jsx-boolean-value": [2, "always"], // Enforce boolean attributes notation in JSX "react/jsx-closing-bracket-location": [2, {"selfClosing": "after-props", "nonEmpty": "after-props"}], // Validate closing bracket location in JSX "react/jsx-curly-spacing": [2, "always"], // Enforce or disallow spaces inside of curly braces in JSX attributes "react/jsx-indent-props": [2, 2], // Validate props indentation in JSX "react/jsx-max-props-per-line": 0, // Limit maximum of props on a single line in JSX "react/jsx-no-bind": [2, {"allowArrowFunctions": true}], // Prevent usage of .bind() and arrow functions in JSX props "react/jsx-no-duplicate-props": [2, {"ignoreCase": true}], // Prevent duplicate props in JSX "react/jsx-no-literals": 0, // Prevent usage of unwrapped JSX strings "react/jsx-no-undef": 2, // Disallow undeclared variables in JSX "react/jsx-sort-prop-types": 0, // Enforce propTypes declarations alphabetical sorting "react/jsx-sort-props": 0, // Enforce props alphabetical sorting "react/jsx-uses-react": 2, // Prevent React to be incorrectly marked as unused "react/jsx-uses-vars": 2, // Prevent variables used in JSX to be incorrectly marked as unused "react/no-danger": 2, // Prevent usage of dangerous JSX properties "react/no-did-mount-set-state": 2, // Prevent usage of setState in componentDidMount "react/no-did-update-set-state": 2, // Prevent usage of setState in componentDidUpdate "react/no-direct-mutation-state": 2, // Prevent direct mutation of this.state "react/no-multi-comp": 0, // Prevent multiple component definition per file "react/no-set-state": 0, // Prevent usage of setState "react/no-unknown-property": 2, // Prevent usage of unknown DOM property "react/prefer-es6-class": 0, // Prefer es6 class instead of createClass for React Components "react/prop-types": 2, // Prevent missing props validation in a React component definition "react/react-in-jsx-scope": 2, // Prevent missing React when using JSX "react/require-extension": [1, { "extensions": [".js"] }], // Restrict file extensions that may be required "react/self-closing-comp": 2, // Prevent extra closing tags for components without children "react/sort-comp": 2, // Enforce component methods order "react/wrap-multilines": 2 // Prevent missing parentheses around multilines JSX } }