.eslintrc.json

{
	"env": {
		"es2021": true,
		"node": true
	},
	"extends": [ "eslint:recommended" ],
	"plugins": [ "@typescript-eslint" ],
	"parser": "@typescript-eslint/parser",
	"parserOptions": {
		"ecmaVersion": 12,
		"sourceType": "module",
		"jsxPragma": "h",
		"jsxFragmentName": "Fragment"
	},
	"rules": {
		"no-process-exit": "off",
		"no-undef": "off",
		"no-unused-vars": "off",
		"no-redeclare": "off",
		"@typescript-eslint/no-unused-vars": [ "error", { "argsIgnorePattern": "^_" } ],
		"@typescript-eslint/no-redeclare": "error",

		// Possible errors
		"no-loss-of-precision": "error",
		"@typescript-eslint/no-extra-parens": [
			"error", "all",
			{
				"conditionalAssign": false,
				"returnAssign": false,
				"nestedBinaryExpressions": false,
				"ignoreJSX": "multi-line"
			}
		],
		"no-template-curly-in-string": "error",
		"no-sparse-arrays": "error",
		"no-unreachable-loop": "error",
		"no-useless-backreference": "error",

		// Best practices
		"default-case-last": "error",
		"default-param-last": "error",
		"dot-location": [ "error", "property" ],
		"dot-notation": "error",
		"eqeqeq": "error",
		"grouped-accessor-pairs": [ "error", "getBeforeSet" ],
		"guard-for-in": "error",
		"no-alert": "error",
		"no-caller": "error",
		"no-constructor-return": "error",
		"no-else-return": "error",
		"@typescript-eslint/no-empty-function": "error",
		"no-eval": "error",
		"no-extend-native": "error",
		"no-extra-bind": "error",
		"no-floating-decimal": "error",
		"no-implied-eval": "error",
		"@typescript-eslint/no-invalid-this": "error",
		"no-iterator": "error",
		"no-labels": "error",
		"no-lone-blocks": "error",
		"no-loop-func": "error",
		"no-multi-spaces": "error",
		"no-new-wrappers": "error",
		"no-octal": "error",
		"no-octal-escape": "error",
		"no-proto": "error",
		"no-return-assign": [ "error", "except-parens" ],
		"no-return-await": "error",
		"no-self-compare": "error",
		"no-sequences": "error",
		"no-throw-literal": "error",
		"no-unmodified-loop-condition": "error",
		"no-unused-expressions": "error",
		"no-warning-comments": "warn",
		"prefer-promise-reject-errors": "error",
		"radix": "error",
		"wrap-iife": "error",
		"yoda": "error",

		// Vars
		"@typescript-eslint/no-shadow": "error",
		"no-undefined": "error",

		// Stylistic
		"array-bracket-newline": [ "error", "consistent" ],
		"array-bracket-spacing": [ "error", "always" ],
		"block-spacing": "error",
		"brace-style": [ "error", "1tbs", { "allowSingleLine": true } ],
		// "camelcase": "error",
		"comma-dangle": [
			"error",
			 {
				"arrays": "always-multiline",
				"objects": "always-multiline",
				"imports": "always-multiline",
				"exports": "always-multiline",
				"functions": "never"
			 }
		],
		"comma-spacing": "error",
		"comma-style": "error",
		"computed-property-spacing": "error",
		"eol-last": "error",
		"func-call-spacing": "error",
		"func-name-matching": "error",
		"function-call-argument-newline": [ "error", "consistent" ],
		"function-paren-newline": [ "error", "multiline-arguments" ],
		"indent": [ "error", "tab", { "SwitchCase": 1 } ],
		"jsx-quotes": [ "error", "prefer-single" ],
		"key-spacing": "error",
		"keyword-spacing": "error",
		"linebreak-style": [ "error", "unix" ],
		"lines-between-class-members": "error",
		"multiline-ternary": [ "error", "always-multiline" ],
		"new-cap": [ "error", { "properties": false } ],
		"new-parens": "error",
		"no-array-constructor": "error",
		"no-lonely-if": "error",
		"no-mixed-operators": "error",
		"no-multi-assign": "error",
		"no-multiple-empty-lines": "error",
		"no-new-object": "error",
		"no-trailing-spaces": "error",
		"no-unneeded-ternary": "error",
		"no-whitespace-before-property": "error",
		"nonblock-statement-body-position": "error",
		"object-curly-newline": [ "error", { "multiline": true, "consistent": true } ],
		"object-curly-spacing": [ "error", "always" ],
		"object-property-newline": [ "error", { "allowAllPropertiesOnSameLine": true } ],
		"one-var": [ "error", "never" ],
		"operator-assignment": "error",
		"operator-linebreak": [ "error", "before" ],
		"padded-blocks": [ "error", "never" ],
		"prefer-exponentiation-operator": "error",
		"quotes": [ "error", "single" ],
		"semi": [ "error", "never" ],
		"semi-style": [ "error", "first" ],
		"space-before-blocks": "error",
		"space-before-function-paren": "error",
		"space-in-parens": "error",
		"space-infix-ops": "error",
		"space-unary-ops": [ "error", { "words": true, "nonwords": false } ],
		"switch-colon-spacing": "error",
		"template-tag-spacing": "error",
		"unicode-bom": "error",

		// ES6
		"arrow-body-style": "error",
		"arrow-parens": "error",
		"arrow-spacing": "error",
		"generator-star-spacing": [
			"error",
			{
				"named": "after",
				"anonymous": "after",
				"method": "before"
			}
		],
		"no-useless-computed-key": "error",
		"@typescript-eslint/no-useless-constructor": "error",
		"no-useless-rename": "error",
		"no-var": "error",
		"object-shorthand": [ "error", "never" ],
		"prefer-arrow-callback": "error",
		"prefer-rest-params": "error",
		"prefer-template": "error",
		"rest-spread-spacing": "error",
		"symbol-description": "error",
		"template-curly-spacing": "error",
		"yield-star-spacing": [ "error", "after" ]
	}
}