// Adapted from React Native .eslintrc. // However, at this time, some rules have been disabled to ease the transition { "parser": "babel-eslint", "plugins": [ "flowtype", "header", "flow-header", "prettier" ], "env": { "es6": true, "jasmine": true, }, "globals": { "console": false, "process": false, "require": false, "setTimeout": false, "setInterval": false, "clearTimeout": false, "clearInterval": false, "__dirname": false, "Set": false, "gc": false }, "rules": { "comma-dangle": 0, // disallow trailing commas in object literals "no-cond-assign": 2, // disallow assignment in conditional expressions "no-console": 0, // disallow use of console (off by default in the node environment) "no-const-assign": 2, // disallow assignment to const-declared variables "no-constant-condition": 0, // 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-keys": 2, // disallow duplicate keys when creating object literals "no-empty": 0, // 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 (off by default) "no-extra-semi": 2, // disallow unnecessary semicolons "no-func-assign": 2, // disallow overwriting functions written as function declarations "no-inner-declarations": 0, // disallow function or variable declarations in nested blocks "no-invalid-regexp": 2, // disallow invalid regular expression strings in the RegExp constructor "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-reserved-keys": 0, // disallow reserved words being used as object literal keys (off by default) "no-sparse-arrays": 2, // disallow sparse arrays // "no-unreachable": 1, // disallow unreachable statements after a return, throw, continue, or break statement "use-isnan": 2, // disallow comparisons with the value NaN "valid-jsdoc": 0, // Ensure JSDoc comments are valid (off by default) "valid-typeof": 2, // Ensure that the results of typeof are compared against a valid string "no-var": 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. "block-scoped-var": 0, // treat var statements as if they were block scoped (off by default) "complexity": 0, // specify the maximum cyclomatic complexity allowed in a program (off by default) "consistent-return": 0, // require return statements to either always or never specify values // "curly": 1, // specify curly brace conventions for all control statements "default-case": 2, // require default case in switch statements (off by default) "dot-notation": 2, // encourages use of dot notation whenever possible "eqeqeq": [2, "allow-null"], // require the use of === and !== "guard-for-in": 0, // make sure for-in loops have an if statement (off by default) "no-alert": 2, // disallow the use of alert, confirm, and prompt "no-caller": 2, // disallow use of arguments.caller or arguments.callee "no-div-regex": 2, // disallow division operators explicitly at beginning of regular expression (off by default) "no-else-return": 0, // disallow else after a return in an if (off by default) "no-eq-null": 0, // disallow comparisons to null without a type-checking operator (off by default) "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 (off by default) "no-implicit-globals": 2, "no-implied-eval": 2, // disallow use of eval()-like methods "no-invalid-this": 2, "no-labels": 0, // disallow use of labeled statements "no-iterator": 2, // disallow usage of __iterator__ property "no-lone-blocks": 2, // disallow unnecessary nested blocks "no-loop-func": 0, // disallow creation of functions within loops "no-multi-str": 0, // disallow use of multiline strings "no-native-reassign": 0, // disallow reassignments of native objects "no-new": 2, // disallow use of new operator when not part of the assignment or comparison "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-octal": 2, // disallow use of octal literals "no-octal-escape": 2, // disallow use of octal escape sequences in string literals, such as var foo = "Copyright \251"; "no-proto": 2, // disallow usage of __proto__ property "no-redeclare": 2, // disallow declaring the same variable more then once "no-return-assign": 2, // disallow use of assignment in return statement "no-script-url": 2, // disallow use of javascript: urls. "no-self-assign": 2, "no-self-compare": 2, // disallow comparisons where both sides are exactly the same (off by default) "no-sequences": 2, // disallow use of comma operator "no-throw-literal": 2, "no-unused-expressions": 0, // disallow usage of expressions in statement position "no-void": 2, // disallow use of void operator (off by default) "no-warning-comments": 0, // disallow usage of configurable warning terms in comments": 1, // e.g. TODO or FIXME (off by default) "no-with": 2, // disallow use of the with statement "radix": 2, // require use of the second argument for parseInt() (off by default) "semi-spacing": 2, // require a space after a semi-colon "vars-on-top": 0, // requires to declare all vars on top of their containing scope (off by default) "wrap-iife": 0, // require immediate function invocation to be wrapped in parentheses (off by default) "yoda": 2, // require or disallow Yoda conditions // Variables // These rules have to do with variable declarations. "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) "no-delete-var": 2, // disallow deletion of variables "no-label-var": 2, // disallow labels that share a name with a variable "no-shadow": 2, // disallow declaration of variables already declared in the outer scope "no-shadow-restricted-names": 2, // disallow shadowing of names such as arguments "no-undef": 2, // disallow use of undeclared variables unless mentioned in a /*global */ block "no-undefined": 0, // disallow use of undefined variable (off by default) "no-undef-init": 2, // disallow use of undefined when initializing variables "no-unused-vars": [2, {"vars": "all", "args": "none"}], // 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 // These rules are specific to JavaScript running on Node.js. "handle-callback-err": 2, // enforces error handling in callbacks (off by default) (on by default in the node environment) "no-mixed-requires": 2, // disallow mixing regular variable and require declarations (off by default) (on by default in the node environment) "no-new-require": 2, // disallow use of new operator with the require function (off by default) (on by default in the node environment) "no-path-concat": 2, // disallow string concatenation with __dirname and __filename (off by default) (on by default in the node environment) "no-process-exit": 0, // disallow process.exit() (on by default in the node environment) "no-restricted-modules": 2, // restrict usage of specified node modules (off by default) "no-sync": 0, // disallow use of synchronous methods (off by default) // Stylistic Issues // These rules are purely matters of style and are quite subjective. "key-spacing": 2, "keyword-spacing": 2, // enforce spacing before and after keywords "jsx-quotes": [2, "prefer-double"], "comma-spacing": 2, "comma-style": 2, "no-multi-spaces": 0, "brace-style": 2, // enforce one true brace style (off by default) "camelcase": 0, // require camel case names "consistent-this": [0, "self"], // enforces consistent naming when capturing the current execution context (off by default) "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 (off by default) "func-name-matching": 2, "func-call-spacing": 2, "func-style": 0, // enforces use of function declarations or expressions (off by default) "new-cap": [2, { "capIsNew": false }], // require a capital letter for constructors "new-parens": 2, // disallow the omission of parentheses when invoking a constructor with no arguments "no-nested-ternary": 0, // disallow nested ternary expressions (off by default) "no-array-constructor": 2, // disallow use of the Array constructor "no-lonely-if": 0, // disallow if as the only statement in an else block (off by default) "no-new-object": 2, // disallow use of the Object constructor "no-spaced-func": 2, // disallow space between function identifier and application "no-tabs": 2, "no-ternary": 0, // disallow the use of ternary operators (off by default) "no-trailing-spaces": 2, // disallow trailing whitespace at the end of lines "no-underscore-dangle": 0, // disallow dangling underscores in identifiers "no-mixed-spaces-and-tabs": 2, // disallow mixed spaces and tabs for indentation // "quotes": [1, "single", "avoid-escape"], // specify whether double or single quotes should be used "quote-props": 0, // require quotes around object literal property names (off by default) "semi": 2, // require or disallow use of semicolons instead of ASI "sort-vars": 0, // sort variables within the same declaration block (off by default) "object-curly-spacing": [2, "always"], "array-bracket-spacing": 2, "computed-property-spacing": 2, "space-in-parens": 2, // require or disallow spaces inside parentheses (off by default) "space-infix-ops": 2, // require spaces around operators "space-unary-ops": [2, { "words": true, "nonwords": false }], // require or disallow spaces before/after unary operators (words on by default, nonwords off by default) "max-nested-callbacks": 0, // specify the maximum depth callbacks can be nested (off by default) "one-var": 0, // allow just one var statement per function (off by default) "wrap-regex": 0, // require regex literals to be wrapped in parentheses (off by default) // 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": 0, // specify the maximum depth that blocks can be nested (off by default) "max-len": 0, // specify the maximum length of a line in your program (off by default) "max-params": 0, // limits the number of parameters that can be used in the function declaration. (off by default) "max-statements": 0, // specify the maximum number of statement allowed in a function (off by default) "no-bitwise": 0, // disallow use of bitwise operators (off by default) "no-plusplus": 0, // disallow use of unary operators, ++ and -- (off by default) // Flow "flowtype/boolean-style": [2, "boolean"], // a problem is raised when using bool instead of boolean "flowtype/define-flow-type": 2, "flowtype/generic-spacing": 0, "flowtype/space-before-type-colon": [2, "never"], "flowtype/space-before-generic-bracket": [2, "never"], "flowtype/space-after-type-colon": 0, "flowtype/no-dupe-keys": 2, "flowtype/union-intersection-spacing": [2, "always"], "flowtype/no-weak-types": [2, {"any": false, "Object": true, "Function": false}], "flow-header/flow-header": 2, // Headers "header/header": [2, "block", [ "*", " * Copyright (c) 2017-present, Facebook, Inc.", " * All rights reserved.", " *", " * This source code is licensed under the BSD-style license found in the", " * LICENSE file in the root directory of this source tree. An additional grant", " * of patent rights can be found in the PATENTS file in the same directory.", " ", ] ], // Prettier "prettier/prettier": ["error", { "parser": "flow", "trailingComma": "es5", "printWidth": 120, }] } }