.eslintrc.js

module.exports = {
	"extends": "eslint:recommended",
	"env": {
		"browser": true,
		"es6": true,
		"jquery": true
	},
	"parserOptions": {
		"ecmaVersion": 2020,
		"sourceType": "module"
	},
	"rules": {
		"accessor-pairs": "off",
		"arrow-spacing": ["error", {"before": true, "after": true}],
		"block-spacing": ["error", "always"],
		"brace-style": ["error", "1tbs", {"allowSingleLine": true}],
		"comma-dangle": ["error", {
			"arrays": "always-multiline",
			"objects": "always-multiline",
			"imports": "always-multiline",
			"exports": "always-multiline",
			"functions": "always-multiline"
		}],
		"comma-spacing": ["error", {"before": false, "after": true}],
		"comma-style": ["error", "last"],
		"constructor-super": "error",
		"curly": ["error", "multi-line"],
		"dot-location": ["error", "property"],
		"eqeqeq": ["error", "always", {"null": "ignore"}],
		"func-call-spacing": ["error", "never"],
		"generator-star-spacing": ["error", {"before": false, "after": true}],
		"handle-callback-err": ["error", "^(err|error)$"],
		"indent": [
			"error",
			"tab",
			{
				"SwitchCase": 1
			}
		],
		"key-spacing": ["error", {"beforeColon": false, "afterColon": true}],
		"keyword-spacing": ["error", {"before": true, "after": true}],
		"new-cap": ["error", {"newIsCap": true, "capIsNew": false}],
		"new-parens": "error",
		"no-array-constructor": "error",
		"no-caller": "error",
		"no-class-assign": "error",
		"no-compare-neg-zero": "error",
		"no-cond-assign": "error",
		"no-const-assign": "error",
		"no-constant-condition": ["error", {"checkLoops": false}],
		"no-control-regex": "error",
		"no-debugger": "error",
		"no-delete-var": "error",
		"no-dupe-args": "error",
		"no-dupe-class-members": "error",
		"no-dupe-keys": "error",
		"no-duplicate-case": "error",
		"no-empty-character-class": "error",
		"no-empty-pattern": "error",
		"no-eval": "error",
		"no-ex-assign": "error",
		"no-extra-bind": "error",
		"no-extra-boolean-cast": "error",
		"no-extra-parens": ["error", "functions"],
		"no-fallthrough": "error",
		"no-floating-decimal": "error",
		"no-func-assign": "error",
		"no-global-assign": "error",
		"no-implied-eval": "error",
		"no-inner-declarations": ["error", "functions"],
		"no-invalid-regexp": "error",
		"no-irregular-whitespace": "error",
		"no-iterator": "error",
		"no-label-var": "error",
		"no-labels": ["error", {"allowLoop": true, "allowSwitch": false}],
		"no-lone-blocks": "error",
		"no-mixed-operators": ["error", {
			"groups": [
				["==", "!=", "===", "!==", ">", ">=", "<", "<="],
				["&&", "||"],
				["in", "instanceof"]
			],
			"allowSamePrecedence": true
		}],
		"no-mixed-spaces-and-tabs": "error",
		"no-multi-spaces": "error",
		"no-multi-str": "error",
		"no-multiple-empty-lines": ["error", {"max": 1, "maxEOF": 0}],
		"no-negated-in-lhs": "error",
		"no-new": "error",
		"no-new-func": "error",
		"no-new-object": "error",
		"no-new-require": "error",
		"no-new-symbol": "error",
		"no-new-wrappers": "error",
		"no-obj-calls": "error",
		"no-octal": "error",
		"no-octal-escape": "error",
		"no-path-concat": "error",
		"no-proto": "error",
		"no-redeclare": "error",
		"no-regex-spaces": "error",
		"no-return-await": "error",
		"no-self-assign": "error",
		"no-self-compare": "error",
		"no-sequences": "error",
		"no-shadow-restricted-names": "error",
		"no-sparse-arrays": "error",
		"no-template-curly-in-string": "error",
		"no-this-before-super": "error",
		"no-throw-literal": "error",
		"no-trailing-spaces": "error",
		"no-undef": "off",
		"no-undef-init": "error",
		"no-unexpected-multiline": "error",
		"no-unmodified-loop-condition": "error",
		"no-unneeded-ternary": ["error", {"defaultAssignment": false}],
		"no-unreachable": "error",
		"no-unsafe-finally": "error",
		"no-unsafe-negation": "error",
		"no-unused-expressions": ["error", {
			"allowShortCircuit": true,
			"allowTernary": true,
			"allowTaggedTemplates": true
		}],
		"no-unused-vars": "off",
		"no-use-before-define": ["error", {"functions": false, "classes": false, "variables": false}],
		"no-useless-call": "error",
		"no-useless-computed-key": "error",
		"no-useless-constructor": "error",
		"no-useless-escape": "error",
		"no-useless-rename": "error",
		"no-useless-return": "error",
		"no-whitespace-before-property": "error",
		"no-with": "error",
		"object-property-newline": ["error", {"allowMultiplePropertiesPerLine": true}],
		"one-var": ["error", {"initialized": "never"}],
		"operator-linebreak": ["error", "after", {
			"overrides": {
				"?": "before",
				":": "before",
				"+": "before",
				"-": "before",
				"*": "before",
				"/": "before",
				"||": "before",
				"&&": "before"
			}
		}],
		"padded-blocks": ["error", {"blocks": "never", "switches": "never", "classes": "never"}],
		"prefer-promise-reject-errors": "error",
		"rest-spread-spacing": ["error", "never"],
		"semi-spacing": ["error", {"before": false, "after": true}],
		"space-before-blocks": ["error", "always"],
		"space-before-function-paren": ["error", "always"],
		"space-in-parens": ["error", "never"],
		"space-infix-ops": "error",
		"space-unary-ops": ["error", {"words": true, "nonwords": false}],
		"spaced-comment": ["error", "always", {
			"line": {"markers": ["*package", "!", "/", ",", "="]},
			"block": {
				"balanced": true,
				"markers": ["*package", "!", ",", ":", "::", "flow-include"],
				"exceptions": ["*"]
			}
		}],
		"symbol-description": "error",
		"template-curly-spacing": ["error", "never"],
		"template-tag-spacing": ["error", "never"],
		"unicode-bom": ["error", "never"],
		"use-isnan": "error",
		"valid-typeof": ["error", {"requireStringLiterals": true}],
		"wrap-iife": ["error", "any", {"functionPrototypeMethods": true}],
		"yield-star-spacing": ["error", "both"],
		"yoda": ["error", "never"],
		"no-prototype-builtins": "off",
		"require-atomic-updates": "off",
		"no-console": "error",
		"prefer-template": "error",
		"quotes": ["error", "double", {"allowTemplateLiterals": true}],
		"no-var": "error"
	}
};