.eslintrc.json

{
	"env": {
		"node": true,
		"es6": true
	},
	"root": true,
	"parser": "@typescript-eslint/parser",
	"parserOptions": {
		"ecmaVersion": 2022,
		"sourceType": "module",
		"project": "tsconfig.json"
	},
	"plugins": ["sonarjs", "@typescript-eslint"],
	"extends": [
		"plugin:sonarjs/recommended-legacy",
		"eslint:recommended",
		"plugin:@typescript-eslint/recommended-type-checked",
		"plugin:@typescript-eslint/stylistic-type-checked"
	],
 	"rules": {
		"no-shadow": ["error", { "builtinGlobals": true }], // disallow variable declarations from shadowing variables declared in the outer scope
		"no-duplicate-imports": ["error", { "includeExports": true }], // disallow duplicate module imports
		"no-template-curly-in-string": "error", // disallow template literal placeholder syntax in regular strings
		"block-scoped-var": "error", // enforce the use of variables within the scope they are defined
		"curly": ["error", "all"], // enforce consistent brace style for all control statements
		"eqeqeq": "error", // equire the use of === and !==
		"max-classes-per-file": ["error", 1], // enforce a maximum number of classes per file
		"no-alert": "warn", // disallow the use of alert, confirm, and prompt
		"no-console": "off", // disallow the use of console
		"no-else-return": ["error", { "allowElseIf": false }], // disallow else blocks after return statements in if statements
		"no-implicit-coercion": "error", // disallow shorthand type conversions
		"no-labels": "error", // disallow labeled statements
		"no-lone-blocks": "error", // disallow unnecessary nested blocks
		"no-multi-spaces": "error", // disallow multiple spaces
		"no-new": "error", // disallow new operators outside of assignments or comparisons
		"no-new-func": "error", // disallow new operators with the Function object
		"no-new-wrappers": "error", // disallow new operators with the String, Number, and Boolean objects
		"no-return-await": "error", // disallow unnecessary return await
		"no-self-compare": "error", // disallow comparisons where both sides are exactly the same
		"no-sequences": "error", // disallow comma operators
		"no-throw-literal": "error", // disallow throwing literals as exceptions
		"no-unused-expressions": "error", // disallow unused expressions
		"no-useless-call": "error", // disallow unnecessary calls to .call() and .apply()
		"no-useless-concat": "error", // disallow unnecessary concatenation of literals or template literals
		"no-useless-return": "error", // disallow redundant return statements
		// "prefer-promise-reject-errors": "error", // require using Error objects as Promise rejection reasons
		"radix": "error", // enforce the consistent use of the radix argument when using parseInt()
		"no-undefined": "error", // disallow the use of undefined as an identifier
		"array-bracket-newline": ["error", { "multiline": true }], // enforce linebreaks after opening and before closing array brackets
		"comma-dangle": ["error", "always-multiline"], // require or disallow trailing commas
		"comma-style": "error", // enforce consistent comma style
		"eol-last": "error", // require or disallow newline at the end of files
		"key-spacing": "error", // enforce consistent spacing between keys and values in object literal properties
		"keyword-spacing": "error", // enforce consistent spacing before and after keywords
		"new-parens": "error", // enforce or disallow parentheses when invoking a constructor with no arguments
		"no-bitwise": "warn", // disallow bitwise operators
		"no-lonely-if": "warn", // disallow if statements as the only statement in else blocks
		"no-multiple-empty-lines": "error", // disallow multiple empty lines
		"no-nested-ternary": "error", // disallow nested ternary expressions
		"no-new-object": "error", // disallow Object constructors
		"no-tabs": ["warn", { "allowIndentationTabs": false }], // disallow all tabs
		"no-trailing-spaces": "error", // disallow trailing whitespace at the end of lines
		"no-unneeded-ternary": "error", // disallow ternary operators when simpler alternatives exist
		"no-whitespace-before-property": "error", // disallow whitespace before properties
		"object-curly-newline": "error", // enforce consistent line breaks inside braces
		"object-curly-spacing": ["error", "always"], // enforce consistent spacing inside braces
		"semi-spacing": "error", // enforce consistent spacing before and after semicolons
		"space-before-blocks": "error", // enforce consistent spacing before blocks
		"space-before-function-paren": [
			"error",
			{
				"anonymous": "always",
				"named": "never",
				"asyncArrow": "always"
			}
		], // enforce consistent spacing before function definition opening parenthesis
		"space-in-parens": "error", // enforce consistent spacing inside parentheses
		"space-infix-ops": "error", // require spacing around infix operators
		"space-unary-ops": "error", // enforce consistent spacing before or after unary operators
		"spaced-comment": ["error", "always"], // enforce consistent spacing after the // or /* in a comment
		"switch-colon-spacing": "error", // enforce spacing around colons of switch statements
		"arrow-body-style": ["error", "as-needed"], // require braces around arrow function bodies
		"arrow-parens": ["error", "always"], // require parentheses around arrow function arguments
		"arrow-spacing": "error", // enforce consistent spacing before and after the arrow in arrow functions
		"generator-star-spacing": ["error", "after"], // enforce consistent spacing around * operators in generator functions
		"no-useless-computed-key": "error", // disallow unnecessary computed property keys in object literals
		"no-useless-rename": "error", // disallow renaming import, export, and destructured assignments to the same name
		"object-shorthand": ["error", "always"], // require or disallow method and property shorthand syntax for object literals
		"prefer-arrow-callback": "warn", // require using arrow functions for callbacks
		"prefer-destructuring": "warn", // require destructuring from arrays and/or objects
		"rest-spread-spacing": ["error", "never"], // enforce spacing between rest and spread operators and their expressions
		"sort-imports": "error", // enforce sorted import declarations within modules
		"template-curly-spacing": "error", // require or disallow spacing around embedded expressions of template strings

		// "promise/prefer-await-to-then": "error", // refer await to then() for reading Promise values,
		// TODO: Waiting this rule to be fixed
		// "promise/prefer-await-to-callbacks": "error", // Prefer async/await to the callback pattern
		// https://github.com/xjamundx/eslint-plugin-promise/issues/175

		// "optimize-regex/optimize-regex": "warn", // Optimize regex literals

		"@typescript-eslint/semi": ["error", "never"], // Require or disallow semicolons instead of ASI
		"@typescript-eslint/member-delimiter-style": ["error", { "multiline": { "delimiter": "none" } }], // Require a specific member delimiter style for interfaces and type literals
		"@typescript-eslint/member-ordering": "warn", // Require a consistent member declaration order
		"@typescript-eslint/brace-style": ["error", "1tbs"], // Enforce consistent brace style for blocks
		"@typescript-eslint/indent": ["error", 2, { "SwitchCase": 1 }], // Enforce consistent indentation
		"@typescript-eslint/quotes": ["error", "double", { "avoidEscape": true }], // Enforce the consistent use of either backticks, double, or single quotes
		"@typescript-eslint/func-call-spacing": ["error", "never"], // Require or disallow spacing between function identifiers and their invocations
		"@typescript-eslint/no-useless-constructor": "error", // Disallow unnecessary constructors
		"@typescript-eslint/prefer-for-of": "warn", // Prefer a ‘for-of’ loop over a standard ‘for’ loop if the index is only used to access the array being iterated
		"@typescript-eslint/no-unnecessary-type-arguments": "warn", // Warns if an explicitly specified type argument is the default for that type parameter
		"@typescript-eslint/prefer-function-type": "warn", // Use function types instead of interfaces with call signatures
		"@typescript-eslint/prefer-readonly": "warn", // Requires that private members are marked as readonly if they're never modified outside of the constructor
		"@typescript-eslint/no-explicit-any": "off",
		"@typescript-eslint/naming-convention": [
			"error",
			{
				"selector": "default",
				"format": ["camelCase"]
			},
			{
				"selector": "variable",
				"format": ["camelCase"]
			},
			{
				"selector": "typeLike",
				"format": ["PascalCase"]
			},
			{
				"selector": "property",
				"modifiers": ["private"],
				"format": ["camelCase"],
				"leadingUnderscore": "require"
			},
			{
				"selector": "parameter",
				"format": ["camelCase"],
				"leadingUnderscore": "allow"
			}
		], // Enforces naming conventions for everything across a codebase
		"@typescript-eslint/explicit-function-return-type": ["error", { "allowExpressions": true }],
		"@typescript-eslint/explicit-module-boundary-types": "off", // Require explicit return and argument types on exported functions' and classes' public class methods
		"@typescript-eslint/interface-name-prefix": "off",
		"@typescript-eslint/restrict-template-expressions": "off",
		"@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_", "varsIgnorePattern": "^_$" }],
		"@typescript-eslint/no-invalid-this": "error" // disallow this keywords outside of classes or class-like objects
	}
}