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{
// An .eslintrc starter file with all rules (set to 0) and envs (set to false) listed.
// Other options (although by no means comprehensive) are either set to false or else commented out.
//
// ESLint docs -- Configuring ESLint: https://eslint.org/docs/user-guide/configuring
// ESLint docs -- List of available rules: https://eslint.org/docs/rules/
"parserOptions": {
// "ecmaVersion": 5, // set to 3, 5 (default), 6, 7, or 8 to specify the version of ECMAScript syntax you want to use.
// // You can also set to 2015 (same as 6), 2016 (same as 7), or 2017 (same as 8) to use the year-based naming.
"sourceType": "module", // set to "script" (default) or "module" if your code is in ECMAScript modules.
"ecmaFeatures": {
"globalReturn": false, // allow return statements in the global scope
"impliedStrict": true, // enable global strict mode (if ecmaVersion is 5 or greater)
"jsx": true, // enable JSX
"experimentalObjectRestSpread": false // enable support for the experimental object rest/spread properties
// (IMPORTANT: This is an experimental feature that may change significantly in the future.
// It’s recommended that you do not write rules relying on this functionality unless you are
// willing to incur maintenance cost when it changes.)
}
},
"parser": "babel-eslint", // compatible parsers: "espree" (default), "esprima", "babel-eslint", and "typescript-eslint-parser" (experimental)
"env": {
"browser": true, // browser global variables
"node": true, // Node.js global variables and Node.js scoping.
"commonjs": true, // CommonJS global variables and CommonJS scoping (use this for browser-only code that uses Browserify/WebPack).
"shared-node-browser": true, // Globals common to both Node and Browser.
"es6": true, // enable all ECMAScript 6 features except for modules (this automatically sets the ecmaVersion parser option to 6).
"worker": false, // web workers global variables.
"amd": false, // defines require() and define() as global variables as per the amd spec
"mocha": true, // adds all of the Mocha testing global variables
"jasmine": false, // adds all of the Jasmine testing global variables for version 1.3 and 2.0
"jest": true, // Jest global variables.
"phantomjs": false, // PhantomJS global variables
"protractor": false, // Protractor global variables
"qunit": false, // QUnit global variables.
"jquery": false, // jQuery global variables
"prototypejs": false, // Prototype.js global variables
"shelljs": false, // ShellJS global variables
"meteor": false, // Meteor global variables.
"mongo": false, // MongoDB global variables.
"applescript": false, // AppleScript global variables.
"nashorn": false, // Java 8 Nashorn global variables.
"serviceworker": false, // Service Worker global variables.
"atomtest": false, // Atom test helper globals.
"embertest": false, // Ember test helper globals.
"webextensions": false, // WebExtensions globals.
"greasemonkey": false // GreaseMonkey globals.
},
"globals": {
"project": true,
"process": true,
},
"plugins": [
// e.g. "react" (must run `npm install eslint-plugin-react` first)
],
"rules": {
// Usage:
// "off" or 0 - turn the rule off
// "warn" or 1 - turn the rule on as a warning (doesn’t affect exit code)
// "error" or 2 - turn the rule on as an error (exit code is 1 when triggered)
//
// If a rule has additional options, you can specify them using array literal syntax, such as:
// "quotes": [2, "double"]
//////// Possible Errors ////////
"for-direction": 2, // enforce “for” loop update clause moving the counter in the right direction.
"getter-return": 2, // enforce return statements in getters
"no-await-in-loop": 0, // disallow await inside of loops
"no-compare-neg-zero": 2, // disallow comparing against -0
"no-cond-assign": 0, // disallow assignment operators in conditional expressions
"no-console": 0, // disallow the use of console
"no-constant-condition": 2, // disallow constant expressions in conditions
"no-control-regex": 2, // disallow control characters in regular expressions
"no-debugger": 2, // disallow the use of debugger
"no-dupe-args": 2, // disallow duplicate arguments in function definitions
"no-dupe-keys": 2, // disallow duplicate keys in object literals
"no-duplicate-case": 2, // disallow duplicate case labels
"no-empty": 2, // disallow empty block statements
"no-empty-character-class": 2, // disallow empty character classes in regular expressions
"no-ex-assign": 2, // disallow reassigning exceptions in catch clauses
"no-extra-boolean-cast": 2, // disallow unnecessary boolean casts
"no-extra-parens": 0, // disallow unnecessary parentheses
"no-extra-semi": 2, // disallow unnecessary semicolons
"no-func-assign": 2, // disallow reassigning function declarations
"no-inner-declarations": 2, // disallow variable or function declarations in nested blocks
"no-invalid-regexp": 2, // disallow invalid regular expression strings in RegExp constructors
"no-irregular-whitespace": 2, // disallow irregular whitespace outside of strings and comments
"no-obj-calls": 2, // disallow calling global object properties as functions
"no-prototype-builtins": 2, // disallow calling some Object.prototype methods directly on objects
"no-regex-spaces": 2, // disallow multiple spaces in regular expressions
"no-sparse-arrays": 2, // disallow sparse arrays
"no-template-curly-in-string": 0, // disallow template literal placeholder syntax in regular strings
"no-unexpected-multiline": 0, // disallow confusing multiline expressions
"no-unreachable": 2, // disallow unreachable code after return, throw, continue, and break statements
"no-unsafe-finally": 2, // disallow control flow statements in finally blocks
"no-unsafe-negation": 2, // disallow negating the left operand of relational operators
"use-isnan": 2, // require calls to isNaN() when checking for NaN
"valid-jsdoc": 2, // enforce valid JSDoc comments
"valid-typeof": 2, // enforce comparing typeof expressions against valid strings
//////// Best Practices ////////
"accessor-pairs": 2, // enforce getter and setter pairs in objects
"array-callback-return": 2, // enforce return statements in callbacks of array methods
"block-scoped-var": 0, // enforce the use of variables within the scope they are defined
"class-methods-use-this": 0, // enforce that class methods utilize this
"complexity": 2, // enforce a maximum cyclomatic complexity allowed in a program
"consistent-return": 0, // require return statements to either always or never specify values
"curly": 0, // enforce consistent brace style for all control statements
"default-case": 0, // require default cases in switch statements
"dot-location": 0, // enforce consistent newlines before and after dots
"dot-notation": 0, // enforce dot notation whenever possible
"eqeqeq": 0, // require the use of === and !==
"guard-for-in": 0, // require for-in loops to include an if statement
"no-alert": 0, // disallow the use of alert, confirm, and prompt
"no-caller": 2, // disallow the 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 the beginning of regular expressions
"no-else-return": 0, // disallow else blocks after return statements in if statements
"no-empty-function": 0, // disallow empty functions
"no-empty-pattern": 0, // disallow empty destructuring patterns
"no-eq-null": 0, // disallow null comparisons without type-checking operators
"no-eval": 2, // disallow the use of eval()
"no-extend-native": 2, // disallow extending native types
"no-extra-bind": 2, // disallow unnecessary calls to .bind()
"no-extra-label": 2, // disallow unnecessary labels
"no-fallthrough": 2, // disallow fallthrough of case statements
"no-floating-decimal": 2, // disallow leading or trailing decimal points in numeric literals
"no-global-assign": 2, // disallow assignments to native objects or read-only global variables
"no-implicit-coercion": 2, // disallow shorthand type conversions
"no-implicit-globals": 2, // disallow variable and function declarations in the global scope
"no-implied-eval": 2, // disallow the use of eval()-like methods
"no-invalid-this": 0, // disallow this keywords outside of classes or class-like objects
"no-iterator": 2, // disallow the use of the __iterator__ property
"no-labels": 2, // disallow labeled statements
"no-lone-blocks": 2, // disallow unnecessary nested blocks
"no-loop-func": 2, // disallow function declarations and expressions inside loop statements
"no-magic-numbers": 0, // disallow magic numbers
"no-multi-spaces": 0, // disallow multiple spaces
"no-multi-str": 2, // disallow multiline strings
"no-new": 2, // disallow new operators outside of assignments or comparisons
"no-new-func": 2, // disallow new operators with the Function object
"no-new-wrappers": 2, // disallow new operators with the String, Number, and Boolean objects
"no-octal": 2, // disallow octal literals
"no-octal-escape": 2, // disallow octal escape sequences in string literals
"no-param-reassign": 0, // disallow reassigning function parameters
"no-proto": 2, // disallow the use of the __proto__ property
"no-redeclare": 2, // disallow variable redeclaration
"no-restricted-properties": 2, // disallow certain properties on certain objects
"no-return-assign": 0, // disallow assignment operators in return statements
"no-return-await": 2, // disallow unnecessary return await
"no-script-url": 2, // disallow javascript: urls
"no-self-assign": 2, // disallow assignments where both sides are exactly the same
"no-self-compare": 2, // disallow comparisons where both sides are exactly the same
"no-sequences": 0, // disallow comma operators
"no-throw-literal": 0, // disallow throwing literals as exceptions
"no-unmodified-loop-condition": 2, // disallow unmodified loop conditions
"no-unused-expressions": 0, // disallow unused expressions
"no-unused-labels": 2, // disallow unused labels
"no-useless-call": 2, // disallow unnecessary calls to .call() and .apply()
"no-useless-concat": 2, // disallow unnecessary concatenation of literals or template literals
"no-useless-escape": 0, // disallow unnecessary escape characters
"no-useless-return": 2, // disallow redundant return statements
"no-void": 2, // disallow void operators
"no-warning-comments": 0, // disallow specified warning terms in comments
"no-with": 2, // disallow with statements
"prefer-promise-reject-errors": 2, // require using Error objects as Promise rejection reasons
"radix": 0, // enforce the consistent use of the radix argument when using parseInt()
"require-await": 0, // disallow async functions which have no await expression
"vars-on-top": 0, // require var declarations be placed at the top of their containing scope
"wrap-iife": 2, // require parentheses around immediate function invocations
"yoda": 0, // require or disallow “Yoda” conditions
//////// Strict Mode ////////
"strict": 0, // require or disallow strict mode directives
//////// Variables ////////
"init-declarations": 0, // require or disallow initialization in variable declarations
"no-catch-shadow": 2, // disallow catch clause parameters from shadowing variables in the outer scope
"no-delete-var": 2, // disallow deleting variables
"no-label-var": 2, // disallow labels that share a name with a variable
"no-restricted-globals": 2, // disallow specified global variables
"no-shadow": 0, // disallow variable declarations from shadowing variables declared in the outer scope
"no-shadow-restricted-names": 2, // disallow identifiers from shadowing restricted names
"no-undef": 2, // disallow the use of undeclared variables unless mentioned in /*global */ comments
"no-undef-init": 2, // disallow initializing variables to undefined
"no-undefined": 0, // disallow the use of undefined as an identifier
"no-unused-vars": 0, // disallow unused variables
"no-use-before-define": 0, // disallow the use of variables before they are defined
//////// Node.js and CommonJS ////////
"callback-return": 0, // require return statements after callbacks
"global-require": 0, // require require() calls to be placed at top-level module scope
"handle-callback-err": 0, // require error handling in callbacks
"no-buffer-constructor": 2, // disallow use of the Buffer() constructor
"no-mixed-requires": 2, // disallow require calls to be mixed with regular variable declarations
"no-new-require": 2, // disallow new operators with calls to require
"no-path-concat": 2, // disallow string concatenation with __dirname and __filename
"no-process-env": 0, // disallow the use of process.env
"no-process-exit": 0, // disallow the use of process.exit()
"no-restricted-modules": 2, // disallow specified modules when loaded by require
"no-sync": 0, // disallow synchronous methods
//////// Stylistic Issues ////////
"array-bracket-newline": 0, // enforce linebreaks after opening and before closing array brackets
"array-bracket-spacing": 0, // enforce consistent spacing inside array brackets
"array-element-newline": 0, // enforce line breaks after each array element
"block-spacing": 0, // disallow or enforce spaces inside of blocks after opening block and before closing block
"brace-style": 0, // enforce consistent brace style for blocks
"camelcase": 0, // enforce camelcase naming convention
"capitalized-comments": 0, // enforce or disallow capitalization of the first letter of a comment
"comma-dangle": 0, // require or disallow trailing commas
"comma-spacing": 2, // enforce consistent spacing before and after commas
"comma-style": 2, // enforce consistent comma style
"computed-property-spacing": 2, // enforce consistent spacing inside computed property brackets
"consistent-this": 0, // enforce consistent naming when capturing the current execution context
"eol-last": 2, // require or disallow newline at the end of files
"func-call-spacing": 0, // require or disallow spacing between function identifiers and their invocations
"func-name-matching": 0, // require function names to match the name of the variable or property to which they are assigned
"func-names": 0, // require or disallow named function expressions
"func-style": 0, // enforce the consistent use of either function declarations or expressions
"function-paren-newline": 0, // enforce consistent line breaks inside function parentheses
"id-blacklist": 2, // disallow specified identifiers
"id-length": 0, // enforce minimum and maximum identifier lengths
"id-match": 2, // require identifiers to match a specified regular expression
"implicit-arrow-linebreak": 0, // enforce the location of arrow function bodies
"jsx-quotes": 2, // enforce the consistent use of either double or single quotes in JSX attributes
"key-spacing": 0, // enforce consistent spacing between keys and values in object literal properties
"keyword-spacing": 2, // enforce consistent spacing before and after keywords
"line-comment-position": 0, // enforce position of line comments
"linebreak-style": 2, // enforce consistent linebreak style
"lines-around-comment": 0, // require empty lines around comments
"lines-between-class-members": 0, // require or disallow an empty line between class members
"max-depth": 2, // enforce a maximum depth that blocks can be nested
"max-len": 0, // enforce a maximum line length
"max-lines": 0, // enforce a maximum number of lines per file
"max-nested-callbacks": 0, // enforce a maximum depth that callbacks can be nested
"max-params": 0, // enforce a maximum number of parameters in function definitions
"max-statements": 0, // enforce a maximum number of statements allowed in function blocks
"max-statements-per-line": 0, // enforce a maximum number of statements allowed per line
"multiline-comment-style": 0, // enforce a particular style for multiline comments
"multiline-ternary": 0, // enforce newlines between operands of ternary expressions
"new-cap": 0, // require constructor names to begin with a capital letter
"new-parens": 2, // require parentheses when invoking a constructor with no arguments
"newline-per-chained-call": 0, // require a newline after each call in a method chain
"no-array-constructor": 2, // disallow Array constructors
"no-bitwise": 0, // disallow bitwise operators
"no-continue": 2, // disallow continue statements
"no-inline-comments": 0, // disallow inline comments after code
"no-lonely-if": 0, // disallow if statements as the only statement in else blocks
"no-mixed-operators": 0, // disallow mixed binary operators
"no-mixed-spaces-and-tabs": 0, // disallow mixed spaces and tabs for indentation
"no-multi-assign": 2, // disallow use of chained assignment expressions
"no-multiple-empty-lines": 2, // disallow multiple empty lines
"no-negated-condition": 0, // disallow negated conditions
"no-nested-ternary": 0, // disallow nested ternary expressions
"no-new-object": 2, // disallow Object constructors
"no-plusplus": 0, // disallow the unary operators ++ and --
"no-restricted-syntax": 2, // disallow specified syntax
"no-tabs": 2, // disallow all tabs
"no-ternary": 0, // disallow 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": 0, // disallow ternary operators when simpler alternatives exist
"no-whitespace-before-property": 2, // disallow whitespace before properties
"nonblock-statement-body-position": 0, // enforce the location of single-line statements
"object-curly-newline": 0, // enforce consistent line breaks inside braces
"object-curly-spacing": 0, // enforce consistent spacing inside braces
"object-property-newline": 0, // enforce placing object properties on separate lines
"one-var": 0, // enforce variables to be declared either together or separately in functions
"one-var-declaration-per-line": 0, // require or disallow newlines around variable declarations
"operator-assignment": 0, // require or disallow assignment operator shorthand where possible
"operator-linebreak": 0, // enforce consistent linebreak style for operators
"padded-blocks": 0, // require or disallow padding within blocks
"padding-line-between-statements": 2, // require or disallow padding lines between statements
"quote-props": 0, // require quotes around object literal property names
"quotes": 0, // enforce the consistent use of either backticks, double, or single quotes
"require-jsdoc": 0, // require JSDoc comments
"semi": 0, // require or disallow semicolons instead of ASI
"semi-spacing": 2, // enforce consistent spacing before and after semicolons
"semi-style": 0, // enforce location of semicolons
"sort-keys": 0, // require object keys to be sorted
"sort-vars": 0, // require variables within the same declaration block to be sorted
"space-before-blocks": 2, // enforce consistent spacing before blocks
"space-before-function-paren": 0, // enforce consistent spacing before function definition opening parenthesis
"space-in-parens": 2, // enforce consistent spacing inside parentheses
"space-infix-ops": 2, // require spacing around infix operators
"space-unary-ops": 2, // enforce consistent spacing before or after unary operators
"spaced-comment": 0, // enforce consistent spacing after the // or /* in a comment
"switch-colon-spacing": 2, // enforce spacing around colons of switch statements
"template-tag-spacing": 2, // require or disallow spacing between template tags and their literals
"unicode-bom": 2, // require or disallow Unicode byte order mark (BOM)
"wrap-regex": 0, // require parenthesis around regex literals
//////// ECMAScript 6 ////////
"arrow-body-style": 0, // require braces around arrow function bodies
"arrow-parens": 0, // require parentheses around arrow function arguments
"arrow-spacing": 2, // enforce consistent spacing before and after the arrow in arrow functions
"constructor-super": 2, // require super() calls in constructors
"generator-star-spacing": 2, // enforce consistent spacing around * operators in generator functions
"no-class-assign": 2, // disallow reassigning class members
"no-confusing-arrow": 0, // disallow arrow functions where they could be confused with comparisons
"no-const-assign": 2, // disallow reassigning const variables
"no-dupe-class-members": 2, // disallow duplicate class members
"no-duplicate-imports": 0, // disallow duplicate module imports
"no-new-symbol": 2, // disallow new operators with the Symbol object
"no-restricted-imports": 2, // disallow specified modules when loaded by import
"no-this-before-super": 2, // disallow this/super before calling super() in constructors
"no-useless-computed-key": 2, // disallow unnecessary computed property keys in object literals
"no-useless-constructor": 0, // disallow unnecessary constructors
"no-useless-rename": 2, // disallow renaming import, export, and destructured assignments to the same name
"no-var": 0, // require let or const instead of var
"object-shorthand": 0, // require or disallow method and property shorthand syntax for object literals
"prefer-arrow-callback": 0, // require using arrow functions for callbacks
"prefer-const": 0, // require const declarations for variables that are never reassigned after declared
"prefer-destructuring": 0, // require destructuring from arrays and/or objects
"prefer-numeric-literals": 0, // disallow parseInt() and Number.parseInt() in favor of binary, octal, and hexadecimal literals
"prefer-rest-params": 2, // require rest parameters instead of arguments
"prefer-spread": 2, // require spread operators instead of .apply()
"prefer-template": 0, // require template literals instead of string concatenation
"require-yield": 2, // require generator functions to contain yield
"rest-spread-spacing": 2, // enforce spacing between rest and spread operators and their expressions
"sort-imports": 0, // enforce sorted import declarations within modules
"symbol-description": 2, // require symbol descriptions
"yield-star-spacing": 2, // require or disallow spacing around the * in yield* expressions
"template-curly-spacing" : "never",
"indent": "off"
// initial values
// "template-curly-spacing": 2, // require or disallow spacing around embedded expressions of template strings
// "indent": 0, // enforce consistent indentation
}
}
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