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.eslintrc.js
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module.exports = {
"parser": "babel-eslint",
"env": {
"browser": true,
"commonjs": true,
"es6": true
},
"globals": {},
"plugins": [],
"rules": {
//Possible Errors
"comma-dangle": 0, //disallow or enforce trailing commas
"no-cond-assign": 2, //disallow assignment in conditional expressions
"no-console": 0, //disallow use of console in the node environment
"no-constant-condition": 1, //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": 0, //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": 1, //disallow unnecessary parentheses
"no-extra-semi": 2, //disallow unnecessary semicolons
"no-func-assign": 2, //disallow overwriting functions written as function declarations
"no-inner-declarations": 1, //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-prototype-builtins": 0, //Disallow use of Object.prototypes builtins directly
"no-regex-spaces": 2, //disallow multiple spaces in a regular expression literal
"no-sparse-arrays": 1, //disallow sparse arrays
"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
"no-unsafe-finally": 2, //disallow control flow statements in finally blocks
"use-isnan": 2, //disallow comparisons with the value NaN
"valid-jsdoc": 0, //Ensure JSDoc comments are valid
"valid-typeof": 2, //Ensure that the results of typeof are compared against a valid string
//Best Practices
"accessor-pairs": 0, //Enforces getter/setter pairs in objects
"array-callback-return": 2, //Enforces return statements in callbacks of array's methods
"block-scoped-var": 0, //treat var statements as if they were block scoped
"complexity": 0, //specify the maximum cyclomatic complexity allowed in a program
"consistent-return": 0, //require return statements to either always or never specify values
// "curly": [2, "multi-line"], //specify curly brace conventions for all control statements
"default-case": 0, //require default case in switch statements
"dot-location": [2, "property"], //enforces consistent newlines before or after dots
"dot-notation": 1, //encourages use of dot notation whenever possible
"eqeqeq": 0, //require the use of === and !==
"guard-for-in": 0, //make sure for-in loops have an if statement
"no-alert": 2, //disallow the use of alert, confirm, and prompt
"no-caller": 0, //disallow use of arguments.caller or arguments.callee
"no-case-declarations": 0, //disallow lexical declarations in case clauses
"no-div-regex": 2, //disallow division operators explicitly at beginning of regular expression
"no-else-return": 0, //disallow else after a return in an if
"no-empty-function": 0, //disallow use of empty functions
"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": 0, //disallow adding to native types
"no-extra-bind": 1, //disallow unnecessary function binding
"no-extra-label": 2, //disallow unnecessary labels
"no-fallthrough": 0, //disallow fallthrough of case statements
"no-floating-decimal": 0, //disallow the use of leading or trailing decimal points in numeric literals
"no-implicit-coercion": 0, //disallow the type conversions with shorter notations
"no-implicit-globals": 0, //disallow var and named functions in global scope
"no-implied-eval": 2, //disallow use of eval()-like methods
// "no-invalid-this": 1, //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": 0, //disallow use of multiline strings
"no-native-reassign": 2, //disallow reassignments of native objects
"no-new-func": 1, //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": 0, //disallow use of octal escape sequences in string literals, such as var foo = "Copyright \251";
"no-octal": 0, //disallow use of octal literals
"no-param-reassign": 0, //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-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": 2, //disallow use of the comma operator
"no-throw-literal": 2, //restrict what can be thrown as an exception
"no-unmodified-loop-condition": 0, //disallow unmodified conditions of loops
"no-unused-expressions": 0, //disallow usage of expressions in statement position
"no-unused-labels": 2, //disallow unused labels
"no-useless-call": 2, //disallow unnecessary .call() and .apply()
"no-useless-concat": 2, //disallow unnecessary concatenation of literals or template literals
"no-useless-escape": 2, //disallow unnecessary escape characters
"no-void": 0, //disallow use of the void operator
// "no-warning-comments": 1, //disallow usage of configurable warning terms in comments (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": 0, //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
"strict": 0, //controls location of Use Strict Directives
//Variables
"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-restricted-globals": 0, //restrict usage of specified global variables
"no-shadow-restricted-names": 2, //disallow shadowing of names such as arguments
"no-shadow": [2, {"allow": ["err"]}], //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": 0, //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
//"callback-return": 2, //enforce return after a callback
"global-require": 0, //enforce require() on 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": 2, //disallow process.exit()
"no-restricted-imports": 0, //restrict usage of specified node imports
"no-restricted-modules": 0, //restrict usage of specified node modules
"no-sync": 1, //disallow use of synchronous methods
//Stylistic Issues
"array-bracket-spacing": [2, "never"], //enforce spacing inside array brackets
"block-spacing": 0, //disallow or enforce spaces inside of single line blocks
//"brace-style": 2, //enforce one true brace style
"camelcase": 1, //require camel case names
"comma-spacing": [2, {"before": false, "after": true}], //enforce spacing before and after comma
"comma-style": 2, //enforce one true comma style
"computed-property-spacing": 2, //require or disallow padding inside computed properties
//"consistent-this": 2, //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-blacklist": 0, //blacklist certain identifiers to prevent them being used
"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": ["error", 4, {"SwitchCase":1}], //specify tab or space width for your code
"jsx-quotes": 0, //specify whether double or single quotes should be used in JSX attributes
// "key-spacing": 2, //enforce spacing between keys and values in object literal properties
"keyword-spacing": [2, {
"before": true,
"after": true
}], //enforce spacing before and after keywords
"linebreak-style": 0, //disallow mixed 'LF' and 'CRLF' as linebreaks
"lines-around-comment": 0, //enforce empty lines around comments
"max-depth": 1, //specify the maximum depth that blocks can be nested
"max-len": [1, 200], //specify the maximum length of a line in your program
"max-lines": 0, //enforce a maximum file length
"max-nested-callbacks": 2, //specify the maximum depth callbacks can be nested
"max-params": 0, //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
"max-statements-per-line": 0, //enforce a maximum number of statements allowed per line
"new-cap": 0, //require a capital letter for constructors
"new-parens": 2, //disallow the omission of parentheses when invoking a constructor with no arguments
"newline-after-var": 0, //require or disallow an empty newline after variable declarations
"newline-before-return": 0, //require newline before return statement
// "newline-per-chained-call": [
// "error",
// {"ignoreChainWithDepth": 2}
// ], //enforce newline after each call when chaining the calls
"no-array-constructor": 2, //disallow use of the Array constructor
"no-bitwise": 0, //disallow use of bitwise operators
"no-continue": 0, //disallow use of the continue statement
"no-inline-comments": 0, //disallow comments inline after code
"no-lonely-if": 2, //disallow if as the only statement in an else block
"no-mixed-operators": 0, //disallow mixes of different operators
"no-mixed-spaces-and-tabs": 2, //disallow mixed spaces and tabs for indentation
"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 the use of the Object constructor
"no-plusplus": 0, //disallow use of unary operators, ++ and --
"no-restricted-syntax": 0, //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
"no-whitespace-before-property": 2, //disallow whitespace before properties
"object-curly-newline": 0, //enforce consistent line breaks inside braces
"object-curly-spacing": 0, //require or disallow padding inside curly braces
"object-property-newline": 0, //enforce placing object properties on separate lines
"one-var": [2, "never"], //require or disallow one variable declaration per function
"one-var-declaration-per-line": 2, //require or disallow an newline around variable declarations
"operator-assignment": 0, //require assignment operator shorthand where possible or prohibit it entirely
"operator-linebreak": [1, "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
"require-jsdoc": 0, //Require JSDoc comment
"semi-spacing": 2, //enforce spacing before and after semicolons
"sort-imports": 0, //sort import declarations within module
"semi": 2, //require or disallow use of semicolons instead of ASI
"sort-vars": 0, //sort variables within the same declaration block
"space-before-blocks": 2, //require or disallow a space before blocks
"space-before-function-paren": [2, "never"], //require or disallow a space before function opening parenthesis
"space-in-parens": 2, //require or disallow spaces inside parentheses
"space-infix-ops": 2, //require spaces around operators
"space-unary-ops": 2, //require or disallow spaces before/after unary operators
"spaced-comment": 0, //require or disallow a space immediately following the // or /* in a comment
"unicode-bom": 0, //require or disallow the Unicode BOM
"wrap-regex": 0, //require regex literals to be wrapped in parentheses
//ECMAScript 6
"arrow-body-style": [2, "as-needed"], //require braces in arrow function body
"arrow-parens": [2, "as-needed"], //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": 0, //enforce spacing around the * in generator functions
"no-class-assign": 2, //disallow modifying variables of class declarations
"no-confusing-arrow": 2, //disallow arrow functions where they could be confused with comparisons
"no-const-assign": 2, //disallow modifying variables that are declared using const
"no-dupe-class-members": 2, //disallow duplicate name in class members
"no-duplicate-imports": 2, //disallow duplicate module imports
"no-new-symbol": 2, //disallow use of the new operator with the Symbol object
"no-this-before-super": 2, //disallow use of this/super before calling super() in constructors.
"no-useless-computed-key": 2, //disallow unnecessary computed property keys in object literals
"no-useless-constructor": 2, //disallow unnecessary constructor
"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": 1, //require method and property shorthand syntax for object literals
"prefer-arrow-callback": 0, //suggest using arrow functions as callbacks
"prefer-const": 0, //suggest using const declaration for variables that are never modified after declared
// "prefer-reflect": 1, //suggest using Reflect methods where applicable
"prefer-rest-params": 1, //suggest using the rest parameters instead of arguments
"prefer-spread": 1, //suggest using the spread operator instead of .apply().
"prefer-template": 1, //suggest using template literals instead of strings concatenation
"require-yield": 2, //disallow generator functions that do not have yield
"rest-spread-spacing": ["error", "never"], //enforce spacing between rest and spread operators and their expressions
"template-curly-spacing": 2, //enforce spacing around embedded expressions of template strings
"yield-star-spacing": [2, "after"] //enforce spacing around the * in yield* expressions
}
}