update eslint via compatability layer with airbnb-base

eslint.config.mjs

@@ -0,0 +1,105 @@
+import { FlatCompat } from '@eslint/eslintrc';
+
+const compat = new FlatCompat({
+});
+
+export default [{
+	ignores: [
+		'*.min.*',
+		'server/scripts/vendor/*',
+		'dist/**/*',
+	],
+},
+...compat.config({
+	env: {
+		browser: true,
+		es6: true,
+		node: true,
+	},
+	extends: [
+		'airbnb-base',
+	],
+	globals: {
+		TravelCities: 'readonly',
+		RegionalCities: 'readonly',
+		StationInfo: 'readonly',
+		SunCalc: 'readonly',
+		NoSleep: 'readonly',
+		OVERRIDES: 'readonly',
+	},
+	parserOptions: {
+		ecmaVersion: 'latest',
+		sourceType: 'module',
+	},
+	plugins: [],
+	rules: {
+		indent: [
+			'error',
+			'tab',
+			{
+				SwitchCase: 1,
+			},
+		],
+		'no-tabs': 0,
+		'no-console': 0,
+		'max-len': 0,
+		'no-use-before-define': [
+			'error',
+			{
+				variables: false,
+			},
+		],
+		'no-param-reassign': [
+			'error',
+			{
+				props: false,
+			},
+		],
+		'no-mixed-operators': [
+			'error',
+			{
+				groups: [
+					[
+						'&',
+						'|',
+						'^',
+						'~',
+						'<<',
+						'>>',
+						'>>>',
+					],
+					[
+						'==',
+						'!=',
+						'===',
+						'!==',
+						'>',
+						'>=',
+						'<',
+						'<=',
+					],
+					[
+						'&&',
+						'||',
+					],
+					[
+						'in',
+						'instanceof',
+					],
+				],
+				allowSamePrecedence: true,
+			},
+		],
+		'import/extensions': [
+			'error',
+			{
+				mjs: 'always',
+				json: 'always',
+			},
+		],
+	},
+	ignorePatterns: [
+		'*.min.js',
+	],
+}),
+];