DreadBin/frontend/.eslintrc.js

module.exports = {
	extends: [
		"eslint:recommended",
		"plugin:react/recommended",
		"plugin:@typescript-eslint/recommended"
	],
	env: {
		browser: true,
		node: true,
		es6: true,
		es2020: true
	},
	parser: "@typescript-eslint/parser",
	parserOptions: {
		ecmaVersion: 2020,
		sourceType: "module"
	},
	plugins: [
		"eslint-plugin-react",
		"@typescript-eslint"
	],
	rules: {
		"linebreak-style": [
			"error",
			process.platform === "win32" ? "windows" : "unix"
		],
		//
		// 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-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
		"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
		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,
			"multi-or-nest"
		],
		// 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-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-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-multi-spaces": 2,
		// disallow use of multiple spaces
		"no-multi-str": 2,
		// 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-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,
		"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: [
			"error",
			"tab",
			{
				SwitchCase: 1
			}
		],
		// 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: 1,
		// 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,
			"that"
		],
		// 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,
			4
		],
		// 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": 1,
		// 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": 1,
		// disallow mixed spaces and tabs for indentation
		"no-multiple-empty-lines": [
			1,
			{
				max: 1
			}
		],
		// disallow multiple empty lines (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
		"one-var": [
			1,
			"never"
		],
		// allow just one var statement per function (off by default)
		"operator-assignment": [
			1,
			"always"
		],
		// require assignment operator shorthand where possible or prohibit it entirely (off by default)
		"padded-blocks": [
			1,
			"never"
		],
		// enforce padding within blocks (off by default)
		"quote-props": [
			1,
			"as-needed"
		],
		// require quotes around object literal property names (off by default)
		quotes: [
			1,
			"double"
		],
		// specify whether double or single quotes should be used
		semi: [
			2,
			"always"
		],
		// 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)
		"keyword-spacing": [
			1,
			{
				before: true,
				after: true,
				overrides: {}
			}
		],
		// require a space after certain keywords (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-unary-ops": [
			1,
			{
				words: true,
				nonwords: false
			}
		],
		// Require or disallow spaces before/after unary operators (words on by default, nonwords 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": [
			2,
			5
		],
		// specify the maximum depth that blocks can be nested (off by default)
		"max-len": [
			2,
			200,
			2
		],
		// specify the maximum length of a line in your program (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": [
			"error",
			{
				allowForLoopAfterthoughts: true
			}
		],
		// disallow use of unary operators, ++ and -- (off by default)

		"react/prop-types": 0,
		"react/jsx-no-target-blank": 0
	},
	overrides: [
		{
			files: ["./**/*.{ts,tsx}"],
			extends: [
				"plugin:@typescript-eslint/recommended",
				"plugin:@typescript-eslint/recommended-requiring-type-checking"
			],
			rules: {
				"@typescript-eslint/no-misused-promises": ["error", { checksVoidReturn: false }],
				"@typescript-eslint/no-floating-promises": ["off"],
				"@typescript-eslint/restrict-template-expressions": ["error", { allowNullish: true }],
				"@typescript-eslint/restrict-plus-operands": ["error", { allowAny: true }]
			},
			parserOptions: {
				project: ["./tsconfig.json"]
			}
		}
	]
};