module.exports = { root: true, parser: "babel-eslint", env: { es6: true }, plugins: [ "eslint-comments", "flowtype", "prettier", "react", "react-hooks", "react-native", "jest" ], // Map from global var to bool specifying if it can be redefined globals: { __DEV__: true, __dirname: false, __fbBatchedBridgeConfig: false, alert: false, cancelAnimationFrame: false, cancelIdleCallback: false, clearImmediate: true, clearInterval: false, clearTimeout: false, console: false, document: false, escape: false, Event: false, EventTarget: false, exports: false, fetch: false, FormData: false, global: false, Map: true, module: false, navigator: false, process: false, Promise: true, requestAnimationFrame: true, requestIdleCallback: true, require: false, Set: true, setImmediate: true, setInterval: false, setTimeout: false, window: false, XMLHttpRequest: false }, rules: { // General "comma-dangle": [1, "always-multiline"], // allow or disallow trailing commas "no-cond-assign": 1, // 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": 1, // disallow control characters in regular expressions "no-debugger": 1, // disallow use of debugger "no-dupe-class-members": 2, // Disallow duplicate name in class members "no-dupe-keys": 2, // disallow duplicate keys when creating object literals "no-empty": 0, // disallow empty statements "no-ex-assign": 1, // disallow assigning to the exception in a catch block "no-extra-boolean-cast": 1, // disallow double-negation boolean casts in a boolean context "no-extra-parens": 0, // disallow unnecessary parentheses (off by default) "no-extra-semi": 1, // disallow unnecessary semicolons "no-func-assign": 1, // disallow overwriting functions written as function declarations "no-inner-declarations": 0, // disallow function or variable declarations in nested blocks "no-invalid-regexp": 1, // disallow invalid regular expression strings in the RegExp constructor "no-negated-in-lhs": 1, // disallow negation of the left operand of an in expression "no-obj-calls": 1, // disallow the use of object properties of the global object (Math and JSON) as functions "no-regex-spaces": 1, // 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": 1, // disallow sparse arrays "no-unreachable": 2, // disallow unreachable statements after a return, throw, continue, or break statement "use-isnan": 1, // disallow comparisons with the value NaN "valid-jsdoc": 0, // Ensure JSDoc comments are valid (off by default) "valid-typeof": 1, // 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. "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": 0, // require default case in switch statements (off by default) "dot-notation": 1, // encourages use of dot notation whenever possible eqeqeq: [1, "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": 1, // disallow the use of alert, confirm, and prompt "no-caller": 1, // disallow use of arguments.caller or arguments.callee "no-div-regex": 1, // 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": 1, // disallow adding to native types "no-extra-bind": 1, // disallow unnecessary function binding "no-fallthrough": 1, // disallow fallthrough of case statements "no-floating-decimal": 1, // disallow the use of leading or trailing decimal points in numeric literals (off by default) "no-implied-eval": 1, // disallow use of eval()-like methods "no-labels": 1, // disallow use of labeled statements "no-iterator": 1, // disallow usage of __iterator__ property "no-lone-blocks": 1, // 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": 1, // 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": 1, // disallows creating new instances of String,Number, and Boolean "no-octal": 1, // disallow use of octal literals "no-octal-escape": 1, // disallow use of octal escape sequences in string literals, such as var foo = "Copyright \251"; "no-proto": 1, // disallow usage of __proto__ property "no-redeclare": 0, // disallow declaring the same variable more then once "no-return-assign": 1, // disallow use of assignment in return statement "no-script-url": 1, // disallow use of javascript: urls. "no-self-compare": 1, // disallow comparisons where both sides are exactly the same (off by default) "no-sequences": 1, // disallow use of comma operator "no-unused-expressions": 0, // disallow usage of expressions in statement position "no-void": 1, // 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": 1, // disallow use of the with statement radix: 1, // require use of the second argument for parseInt() (off by default) "semi-spacing": 1, // 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: 1, // require or disallow Yoda conditions // Variables // These rules have to do with variable declarations. "no-catch-shadow": 1, // 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": 1, // disallow deletion of variables "no-label-var": 1, // disallow labels that share a name with a variable "no-shadow": 1, // disallow declaration of variables already declared in the outer scope "no-shadow-restricted-names": 1, // 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": 1, // disallow use of undefined when initializing variables "no-unused-vars": [ 1, { vars: "all", args: "none", ignoreRestSiblings: true } ], // 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": 1, // enforces error handling in callbacks (off by default) (on by default in the node environment) "no-mixed-requires": 1, // disallow mixing regular variable and require declarations (off by default) (on by default in the node environment) "no-new-require": 1, // disallow use of new operator with the require function (off by default) (on by default in the node environment) "no-path-concat": 1, // 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": 1, // restrict usage of specified node modules (off by default) "no-sync": 0, // disallow use of synchronous methods (off by default) // ESLint Comments Plugin // The following rules are made available via `eslint-plugin-eslint-comments` "eslint-comments/no-aggregating-enable": 1, // disallows eslint-enable comments for multiple eslint-disable comments "eslint-comments/no-unlimited-disable": 1, // disallows eslint-disable comments without rule names "eslint-comments/no-unused-disable": 1, // disallow disables that don't cover any errors "eslint-comments/no-unused-enable": 1, // // disallow enables that don't enable anything or enable rules that weren't disabled // Flow Plugin // The following rules are made available via `eslint-plugin-flowtype` "flowtype/define-flow-type": 1, "flowtype/use-flow-type": 1, // Prettier Plugin // https://github.com/prettier/eslint-plugin-prettier "prettier/prettier": [2], // Stylistic Issues // These rules are purely matters of style and are quite subjective. "key-spacing": 0, "keyword-spacing": 1, // enforce spacing before and after keywords "jsx-quotes": [1, "prefer-double"], // enforces the usage of double quotes for all JSX attribute values which doesn’t contain a double quote "comma-spacing": 0, "no-multi-spaces": 0, "brace-style": 0, // enforce one true brace style (off by default) camelcase: 0, // require camel case names "consistent-this": 1, // enforces consistent naming when capturing the current execution context (off by default) "eol-last": 1, // 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-style": 0, // enforces use of function declarations or expressions (off by default) "new-cap": 0, // require a capital letter for constructors "new-parens": 1, // 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": 1, // disallow use of the Array constructor "no-empty-character-class": 1, // disallow the use of empty character classes in regular expressions "no-lonely-if": 0, // disallow if as the only statement in an else block (off by default) "no-new-object": 1, // disallow use of the Object constructor "no-spaced-func": 1, // disallow space between function identifier and application "no-ternary": 0, // disallow the use of ternary operators (off by default) "no-trailing-spaces": 1, // disallow trailing whitespace at the end of lines "no-underscore-dangle": 0, // disallow dangling underscores in identifiers "no-mixed-spaces-and-tabs": 1, // 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: 1, // require or disallow use of semicolons instead of ASI "sort-vars": 0, // sort variables within the same declaration block (off by default) "space-in-brackets": 0, // require or disallow spaces inside brackets (off by default) "space-in-parens": 0, // require or disallow spaces inside parentheses (off by default) "space-infix-ops": 1, // require spaces around operators "space-unary-ops": [1, { 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": 1, // disallow use of bitwise operators (off by default) "no-plusplus": 0, // disallow use of unary operators, ++ and -- (off by default) // React Plugin // The following rules are made available via `eslint-plugin-react`. "react/display-name": 0, "react/jsx-boolean-value": 0, "react/jsx-no-comment-textnodes": 1, "react/jsx-no-duplicate-props": 2, "react/jsx-no-undef": 2, "react/jsx-sort-props": 0, "react/jsx-uses-react": 1, "react/jsx-uses-vars": 1, "react/no-did-mount-set-state": 1, "react/no-did-update-set-state": 1, "react/no-multi-comp": 0, "react/no-string-refs": 1, "react/no-unknown-property": 0, "react/prop-types": 0, "react/react-in-jsx-scope": 1, "react/self-closing-comp": 1, "react/wrap-multilines": 0, // React-Hooks Plugin // The following rules are made available via `eslint-plugin-react-hooks` "react-hooks/rules-of-hooks": "error", // React-Native Plugin // The following rules are made available via `eslint-plugin-react-native` "react-native/no-inline-styles": 1, // Jest Plugin // The following rules are made available via `eslint-plugin-jest`. "jest/no-disabled-tests": 1, "jest/no-focused-tests": 1, "jest/no-identical-title": 1, "jest/valid-expect": 1 }, overrides: [ { files: [ "**/__fixtures__/**/*.js", "**/__mocks__/**/*.js", "**/__tests__/**/*.js", "jest/**/*.js", "RNTester/**/*.js" ], globals: { // Expose some Jest globals for test helpers afterAll: true, afterEach: true, beforeAll: true, beforeEach: true, expect: true, jest: true } }, { files: ["**/__tests__/**/*-test.js"], env: { jasmine: true, jest: true } } ], settings: { react: { version: "detect" } } };