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Config File for ESLint
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| module.exports = { | |
| "root": true, | |
| "parser": "@typescript-eslint/parser", | |
| "env": { | |
| "browser": true, | |
| "node": true, | |
| "es6": true, | |
| "jest": true | |
| }, | |
| "globals": { | |
| "Atomics": "readonly", | |
| "SharedArrayBuffer": "readonly", | |
| "nconf": true, | |
| "__DEV__": true, | |
| "__PROD__": true | |
| }, | |
| "plugins": ["@typescript-eslint/eslint-plugin", "eslint-plugin-react"], | |
| "settings": { | |
| "react": { | |
| "version": "detect" | |
| } | |
| }, | |
| "parserOptions": { | |
| "ecmaVersion": 2018, | |
| "sourceType": "module", | |
| project: './tsconfig.json', | |
| tsconfigRootDir: __dirname, | |
| "ecmaFeatures": { | |
| "arrowFunctions": true, | |
| "binaryLiterals": true, | |
| "blockBindings": true, | |
| "classes": true, | |
| "defaultParams": true, | |
| "destructuring": true, | |
| "forOf": true, | |
| "generators": true, | |
| "modules": true, | |
| "objectLiteralComputedProperties": true, | |
| "objectLiteralDuplicateProperties": true, | |
| "objectLiteralShorthandMethods": true, | |
| "objectLiteralShorthandProperties": true, | |
| "octalLiterals": true, | |
| "regexUFlag": true, | |
| "regexYFlag": true, | |
| "spread": true, | |
| "superInFunctions": true, | |
| "templateStrings": true, | |
| "unicodeCodePointEscapes": true, | |
| "globalReturn": true, | |
| "jsx": true | |
| } | |
| }, | |
| "rules": { | |
| // | |
| //Possible Errors | |
| // | |
| // The following rules point out areas where you might have made mistakes. | |
| // | |
| "comma-dangle": 2, // disallow or enforce trailing commas | |
| "no-cond-assign": 2, // disallow assignment in conditional expressions | |
| "no-console": ["error", { | |
| allow: ["warn", "error", "log"] | |
| }], // disallow use of console (off by default in the node environment) | |
| "no-constant-condition": 2, // 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": 2, // disallow a duplicate case label. | |
| "no-empty": 2, // disallow empty statements | |
| "no-empty-character-class": 2, // disallow the use of empty character classes in regular expressions | |
| "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": 2, // 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-regex-spaces": 2, // disallow multiple spaces in a regular expression literal | |
| "quote-props": ["error", "consistent-as-needed"], // disallow reserved words being used as object literal keys (off by default) | |
| "no-sparse-arrays": 2, // disallow sparse arrays | |
| "no-unreachable": 2, // disallow unreachable statements after a return, throw, continue, or break statement | |
| "use-isnan": 2, // disallow comparisons with the value NaN | |
| "valid-jsdoc": 2, // Ensure JSDoc comments are valid (off by default) | |
| "valid-typeof": 2, // 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). 0: deep destructuring is not compatible https://github.com/eslint/eslint/issues/1863 | |
| "prefer-const": 2, // Enforces const use, when variable is not reassigned | |
| "complexity": 0, // specify the maximum cyclomatic complexity allowed in a program (off by default) | |
| "consistent-return": 2, // require return statements to either always or never specify values | |
| "curly": 2, // 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, // require the use of === and !== | |
| "guard-for-in": 2, // 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": 2, // disallow else after a return in an if (off by default) | |
| "no-labels": 2, // disallow use of labels for anything other then loops and switches | |
| "no-eq-null": 2, // 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-implied-eval": 2, // disallow use of eval()-like methods | |
| "no-iterator": 2, // disallow usage of __iterator__ property | |
| "no-lone-blocks": 2, // disallow unnecessary nested blocks | |
| "no-loop-func": 2, // disallow creation of functions within loops | |
| "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": 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-param-reassign": 2, // disallow reassignment of function parameters (off by default) | |
| "no-process-env": 0, // disallow use of process.env (off by default) | |
| "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-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, // restrict what can be thrown as an exception (off by default) | |
| "no-unused-expressions": 2, // disallow usage of expressions in statement position | |
| "no-void": 2, // disallow use of void operator (off by default) | |
| "no-warning-comments": [0, { | |
| "terms": ["todo", "fixme"], | |
| "location": "start" | |
| }], // disallow usage of configurable warning terms in comments": 2, // 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) | |
| "vars-on-top": 2, // requires to declare all vars on top of their containing scope (off by default) | |
| "wrap-iife": 2, // require immediate function invocation to be wrapped in parentheses (off by default) | |
| "yoda": 2, // require or disallow Yoda conditions | |
| // | |
| // Strict Mode | |
| // | |
| // These rules relate to using strict mode. | |
| // | |
| "strict": 0, // controls location of Use Strict Directives. 0: required by `babel-eslint` | |
| // | |
| // 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-undef-init": 2, // disallow use of undefined when initializing variables | |
| // "no-undefined": 2, // disallow use of undefined variable (off by default) | |
| // "no-unused-vars": 2, // disallow declaration of variables that are not used in the code | |
| "no-use-before-define": 2, // disallow use of variables before they are defined | |
| // | |
| //Stylistic Issues | |
| // | |
| // These rules are purely matters of style and are quite subjective. | |
| // | |
| "indent": [1, 2], // this option sets a specific tab width for your code (off by default) | |
| "brace-style": 1, // enforce one true brace style (off by default) | |
| "camelcase": 0, // require camel case names | |
| "comma-spacing": [1, { | |
| "before": false, | |
| "after": true | |
| }], // enforce spacing before and after comma | |
| "comma-style": [1, "last"], // enforce one true comma style (off by default) | |
| "consistent-this": [1, "_this"], // 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) | |
| "key-spacing": [1, { | |
| "beforeColon": false, | |
| "afterColon": true | |
| }], // enforces spacing between keys and values in object literal properties | |
| "max-nested-callbacks": [1, 3], // specify the maximum depth callbacks can be nested (off by default) | |
| "new-cap": [1, { | |
| newIsCap: true, | |
| capIsNew: false | |
| }], // require a capital letter for constructors | |
| "new-parens": 1, // disallow the omission of parentheses when invoking a constructor with no arguments | |
| "newline-after-var": 0, // allow/disallow an empty newline after var statement (off by default) | |
| "no-array-constructor": 1, // disallow use of the Array constructor | |
| "no-inline-comments": 0, // disallow comments inline after code (off by default) | |
| "no-lonely-if": 1, // disallow if as the only statement in an else block (off by default) | |
| "no-mixed-spaces-and-tabs": 0, // disallow mixed spaces and tabs for indentation | |
| "no-multiple-empty-lines": [1, { | |
| "max": 2 | |
| }], // disallow multiple empty lines (off by default) | |
| "no-nested-ternary": 1, // disallow nested ternary expressions (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": 1, // disallow dangling underscores in identifiers | |
| "one-var": [1, "never"], // allow just one var statement per function (off by default) | |
| "operator-assignment": [1, "never"], // require assignment operator shorthand where possible or prohibit it entirely (off by default) | |
| "padded-blocks": [1, "never"], // enforce padding within blocks (off by default) | |
| "quotes": ["error", "single", { | |
| "allowTemplateLiterals": true | |
| }], // specify whether double or single quotes should be used | |
| "semi": [1, "never"], // require or disallow use of semicolons instead of ASI | |
| "semi-spacing": [1, { | |
| "before": false, | |
| "after": true | |
| }], // enforce spacing before and after semicolons | |
| "sort-vars": 0, // sort variables within the same declaration block (off by default) | |
| "space-before-blocks": [1, "always"], // require or disallow space before blocks (off by default) | |
| "space-before-function-paren": [1, { | |
| "anonymous": "always", | |
| "named": "never" | |
| }], // require or disallow space before function opening parenthesis (off by default) | |
| "object-curly-spacing": [1, "always"], // require or disallow spaces inside brackets (off by default) | |
| "space-in-parens": [1, "never"], // require or disallow spaces inside parentheses (off by default) | |
| "space-infix-ops": ["error", { | |
| "int32Hint": false | |
| }], // require spaces around operators | |
| "keyword-spacing": [1, { | |
| "before": true | |
| }], // require a space after return, throw, and case | |
| "space-unary-ops": [1, { | |
| "words": true, | |
| "nonwords": false | |
| }], // Require or disallow spaces before/after unary operators (words on by default, nonwords off by default) | |
| "spaced-comment": [1, "always"], // require or disallow a space immediately following the // in a line comment (off by default) | |
| "wrap-regex": 0, // require regex literals to be wrapped in parentheses (off by default) | |
| // | |
| // ECMAScript 6 | |
| // | |
| // These rules are only relevant to ES6 environments and are off by default. | |
| // | |
| "no-var": 2, // require let or const instead of var (off by default) | |
| "generator-star-spacing": [2, "before"], // enforce the spacing around the * in generator functions (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, 3], // specify the maximum depth that blocks can be nested (off by default) | |
| "max-len": [2, 175, 2], // specify the maximum length of a line in your program (off by default) | |
| "max-params": [2, 7], // 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": [2, { | |
| "allowForLoopAfterthoughts": true | |
| }], // disallow use of unary operators, ++ and -- (off by default) | |
| // | |
| // eslint-plugin-react | |
| // | |
| // React specific linting rules for ESLint | |
| // | |
| "react/display-name": 0, // Prevent missing displayName in a React component definition | |
| "jsx-quotes": ["error", "prefer-single"], // Enforce quote style for JSX attributes | |
| "react/jsx-no-undef": 2, // Disallow undeclared variables in JSX | |
| "react/jsx-sort-props": 0, // Enforce props alphabetical sorting | |
| "react/jsx-uses-react": 2, // Prevent React to be incorrectly marked as unused | |
| "react/jsx-uses-vars": 2, // Prevent variables used in JSX to be incorrectly marked as unused | |
| "react/no-did-mount-set-state": 2, // Prevent usage of setState in componentDidMount | |
| "react/no-did-update-set-state": 2, // Prevent usage of setState in componentDidUpdate | |
| "react/no-multi-comp": 0, // Prevent multiple component definition per file | |
| "react/no-unknown-property": 2, // Prevent usage of unknown DOM property | |
| "react/react-in-jsx-scope": 2, // Prevent missing React when using JSX | |
| "react/self-closing-comp": 2, // Prevent extra closing tags for components without children | |
| // | |
| // typescript | |
| // | |
| // Typescript specific linting rules for ESLint | |
| // | |
| "@typescript-eslint/adjacent-overload-signatures": 2, //Require that member overloads be consecutive | |
| "@typescript-eslint/array-type": 1, //Requires using either T[] or Array<T> for arrays | |
| "@typescript-eslint/await-thenable": 2, //Disallows awaiting a value that is not a Thenable | |
| "@typescript-eslint/ban-ts-ignore": 0, //Bans “// @ts-ignore” comments from being used | |
| "@typescript-eslint/ban-types": 2, //Bans specific types from being used | |
| "@typescript-eslint/brace-style": 2, //Enforce consistent brace style for blocks | |
| "@typescript-eslint/camelcase": 2, //Enforce camelCase naming convention | |
| "@typescript-eslint/class-name-casing": 2, //Require PascalCased class and interface names | |
| "@typescript-eslint/consistent-type-assertions": [1, { | |
| assertionStyle: 'as' | |
| }], //Enforces consistent usage of type assertions. | |
| "@typescript-eslint/consistent-type-definitions": [1, 'type'], //Consistent with type definition either interface or type | |
| "@typescript-eslint/explicit-function-return-type": 2, //Require explicit return types on functions and class methods | |
| "@typescript-eslint/explicit-member-accessibility": [1, { | |
| accessibility: 'no-public' | |
| }], //Require explicit accessibility modifiers on class properties and methods | |
| "@typescript-eslint/func-call-spacing": 0, //Require or disallow spacing between function identifiers and their invocations | |
| "@typescript-eslint/generic-type-naming": 0, //Enforces naming of generic type variables | |
| // "@typescript-eslint/indent": [1, 2], //Enforce consistent indentation | |
| // "@typescript-eslint/interface-name-prefix": [1, "never"], //Require that interface names should or should not prefixed with I | |
| "@typescript-eslint/member-delimiter-style": [1, { | |
| "multiline": { | |
| "delimiter": "comma", | |
| "requireLast": false | |
| }, //Require a specific member delimiter style for interfaces and type literals | |
| "singleline": { | |
| "delimiter": "comma", | |
| "requireLast": false | |
| } | |
| }], | |
| "@typescript-eslint/member-naming": [1, { | |
| "private": "^_", | |
| "protected": "^$" | |
| }], //Enforces naming conventions for class members by visibility | |
| "@typescript-eslint/member-ordering": [ //Require a consistent member declaration order | |
| 1, | |
| { | |
| "default": [ | |
| "public-static-field", | |
| "public-static-method", | |
| "public-instance-field", | |
| "public-constructor", | |
| "public-instance-method", | |
| "protected-static-field", | |
| "protected-static-method", | |
| "protected-instance-field", | |
| "protected-constructor", | |
| "protected-instance-method", | |
| "private-static-field", | |
| "private-static-method", | |
| "private-instance-field", | |
| "private-constructor", | |
| "private-instance-method" | |
| ] | |
| } | |
| ], | |
| "@typescript-eslint/no-array-constructor": 2, //Disallow generic Array constructors | |
| "@typescript-eslint/no-dynamic-delete": 2, //Bans usage of the delete operator with computed key expressions | |
| "@typescript-eslint/no-empty-function": 2, //Disallow empty functions | |
| "@typescript-eslint/no-empty-interface": 0, //Disallow the declaration of empty interfaces | |
| "@typescript-eslint/no-explicit-any": 0, //Disallow usage of the any type | |
| // "@typescript-eslint/no-extra-non-null-assertion": 2, //Disallow extra non-null assertion | |
| "@typescript-eslint/no-extra-parens": 0, //Disallow unnecessary parentheses | |
| "@typescript-eslint/no-extraneous-class": 2, //Forbids the use of classes as namespaces | |
| "@typescript-eslint/no-floating-promises": 2, //Requires Promise-like values to be handled appropriately. | |
| "@typescript-eslint/no-for-in-array": 0, //Disallow iterating over an array with a for-in loop | |
| "@typescript-eslint/no-inferrable-types": 2, //Disallows explicit type declarations for variables or parameters initialized to a number, string, or boolean | |
| "@typescript-eslint/no-magic-numbers": 0, //Disallows magic numbers | |
| "@typescript-eslint/no-misused-new": 2, //Enforce valid definition of new and constructor | |
| "@typescript-eslint/no-misused-promises": 2, //Avoid using promises in places not designed to handle them | |
| "@typescript-eslint/no-namespace": 2, //Disallow the use of custom TypeScript modules and namespaces | |
| "@typescript-eslint/no-non-null-assertion": 0, //Disallows non-null assertions using the ! postfix operator | |
| "@typescript-eslint/no-parameter-properties": 0, //Disallow the use of parameter properties in class constructors | |
| "@typescript-eslint/no-require-imports": 2, //Disallows invocation of require() | |
| "@typescript-eslint/no-this-alias": 2, //Disallow aliasing this | |
| "@typescript-eslint/no-type-alias": 0, //Disallow the use of type aliases | |
| "@typescript-eslint/no-unnecessary-condition": 1, //Prevents conditionals where the type is always truthy or always falsy | |
| "@typescript-eslint/no-unnecessary-qualifier": 1, // Warns when a namespace qualifier is unnecessary | |
| "@typescript-eslint/no-unnecessary-type-arguments": 1, //Warns if an explicitly specified type argument is the default for that type parameter | |
| "@typescript-eslint/no-unnecessary-type-assertion": 1, //Warns if a type assertion does not change the type of an expression | |
| // "@typescript-eslint/no-untyped-public-signature": 1, //Requires that all public method arguments and return type will be explicitly typed | |
| "@typescript-eslint/no-unused-expressions": 2, //Disallow unused expressions | |
| "@typescript-eslint/no-unused-vars": 2, //Disallow unused variables | |
| "@typescript-eslint/no-use-before-define": 2, //Disallow the use of variables before they are defined | |
| "@typescript-eslint/no-useless-constructor": 0, //Disallow unnecessary constructors | |
| "@typescript-eslint/no-var-requires": 2, //Disallows the use of require statements except in import statements | |
| "@typescript-eslint/prefer-for-of": 0, //Prefer a ‘for-of’ loop over a standard ‘for’ loop if the index is only used to access the array being iterated | |
| "@typescript-eslint/prefer-function-type": 1, // Use function types instead of interfaces with call signatures | |
| "@typescript-eslint/prefer-includes": 2, //Enforce includes method over indexOf method | |
| "@typescript-eslint/prefer-namespace-keyword": 2, //Require the use of the namespace keyword instead of the module keyword to declare custom TypeScript modules | |
| "@typescript-eslint/prefer-readonly": 2, //Requires that private members are marked as readonly if they're never modified outside of the constructor | |
| "@typescript-eslint/prefer-regexp-exec": 2, //Prefer RegExp#exec() over String#match() if no global flag is provided | |
| "@typescript-eslint/prefer-string-starts-ends-with": 2, //Enforce the use of String#startsWith and String#endsWith instead of other equivalent methods of checking substrings | |
| "@typescript-eslint/promise-function-async": 2, //Requires any function or method that returns a Promise to be marked async | |
| // "@typescript-eslint/quotes": 2, //Enforce the consistent use of either backticks, double, or single quotes | |
| "@typescript-eslint/require-array-sort-compare": 2, //Enforce giving compare argument to Array#sort | |
| "@typescript-eslint/require-await": 0, //Disallow async functions which have no await expression | |
| "@typescript-eslint/restrict-plus-operands": 2, //When adding two variables, operands must both be of type number or of type string | |
| "@typescript-eslint/restrict-template-expressions": 2, //Enforce template literal expressions to be of string type | |
| // "@typescript-eslint/semi": [1, "never"], //Require or disallow semicolons instead of ASI | |
| "@typescript-eslint/space-before-function-paren": 0, //enforce consistent spacing before function definition opening parenthesis | |
| "@typescript-eslint/strict-boolean-expressions": 0, //Restricts the types allowed in boolean expressions | |
| // "@typescript-eslint/triple-slash-reference": 0, //Sets preference level for triple slash directives versus ES6-style import declarations | |
| "@typescript-eslint/type-annotation-spacing": [1, { | |
| "before": false, | |
| "after": true | |
| }], //Require consistent spacing around type annotations | |
| "@typescript-eslint/typedef": 2, //Requires type annotations to exist | |
| "@typescript-eslint/unbound-method": 2, //Enforces unbound methods are called with their expected scope | |
| "@typescript-eslint/unified-signatures": 1, //Warns for any two overloads that could be unified into one by using a union or an optional/rest parameter" | |
| } | |
| } |
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