.eslintrc.js

/* eslint-env node*/
'use strict';

module.exports = {
	extends: 'eslint:recommended',
	rules: {
		'no-confusing-arrow': 'warn',
		'valid-jsdoc': ['warn', { requireReturn: false }],
		'accessor-pairs': 'warn',
		'array-callback-return': 'warn',
		'block-scoped-var': 'warn',
		complexity: ['warn', { max: 25 }],
		'consistent-return': 'warn',
		'default-case': 'warn',
		'dot-notation': 'warn',
		eqeqeq: ['warn', 'allow-null'],
		'guard-for-in': 'warn',
		'no-alert': 'warn',
		'no-caller': 'error',
		'no-div-regex': 'warn',
		'no-else-return': 'warn',
		'no-empty-function': 'warn',
		'no-eval': 'error',
		'no-extend-native': 'warn',
		'no-extra-bind': 'warn',
		'no-extra-label': 'warn',
		'no-floating-decimal': 'warn',
		'no-implicit-coercion': 'warn',
		'no-implicit-globals': 'warn',
		'no-implied-eval': 'error',
		'no-iterator': 'error',
		'no-labels': 'warn',
		'no-lone-blocks': 'warn',
		'no-loop-func': 'error',
		'no-magic-numbers': ['warn', { ignore: [-1, 0, 1] }],
		'no-multi-str': 'warn',
		'no-native-reassign': 'error',
		'no-new': 'warn',
		'no-new-func': 'error',
		'no-new-wrappers': 'warn',
		'no-octal-escape': 'error',
		'no-proto': 'warn',
		'no-return-assign': 'error',
		'no-script-url': 'warn',
		'no-self-compare': 'error',
		'no-sequences': 'warn',
		'no-throw-literal': 'warn',
		'no-unmodified-loop-condition': 'warn',
		'no-unused-expressions': 'error',
		'no-unsafe-finally': 'error',
		'no-useless-call': 'warn',
		'no-useless-computed-key': 'warn',
		'no-useless-concat': 'warn',
		'no-warning-comments': [
			'warn',
			{ terms: ['todo', 'bug'], location: 'start' },
		],
		'no-with': 'error',
		radix: 'warn',
		yoda: 'warn',
		strict: ['warn', 'safe'],
		'no-catch-shadow': 'error',
		'no-restricted-globals': ['warn', 'event'],
		'no-shadow': 'warn',
		'no-shadow-restricted-names': 'error',
		'no-undef': 'error',
		'no-use-before-define': 'error',
		'arrow-body-style': 'warn',
		'no-useless-constructor': 'warn',
		'no-var': 'warn',
		'object-shorthand': 'warn',
		'prefer-arrow-callback': 'warn',
		'prefer-const': 'warn',
		'prefer-rest-params': 'warn',
		'prefer-spread': 'warn',
		'prefer-template': 'warn',
		'require-yield': 'warn',
		'no-duplicate-imports': 'warn',
		'no-useless-escape': 'warn',
		'func-names': 'warn',
		camelcase: ['warn', { properties: 'never' }],
		'new-cap': [
			'warn',
			{ capIsNewExceptions: ['Symbol', 'Boolean', 'RegExp'] },
		],
	},
	env: {
		browser: true,
		es6: true,
	},
	parserOptions: {
		ecmaVersion: 2017,
		sourceType: 'script',
	},
	root: true,
	overrides: {
		files: ['*.mjs'],
		parserOptions: {
			sourceType: 'module',
		},
	},
};