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.eslintrc.js
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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
'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
}
};