eslint.config.mjs

import mocha from 'eslint-plugin-mocha';
import babel from '@babel/eslint-plugin';
import globals from 'globals';
import babelParser from '@babel/eslint-parser';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import js from '@eslint/js';
import { FlatCompat } from '@eslint/eslintrc';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const compat = new FlatCompat({
    baseDirectory: __dirname,
    recommendedConfig: js.configs.recommended,
    allConfig: js.configs.all
});

export default [{
    ignores: [
        '**/.DS_Store',
        '**/_sass',
        '**/_site',
        '**/coverage',
        'dist/*',
        '**/node_modules',
        '**/package-lock.json',
        'packages/*/dist/*',
        '**/.env',
        '**/.env.*',
        '!**/.env.example',
    ],
}, ...compat.extends('eslint:recommended', 'plugin:mocha/recommended'), {
    plugins: {
        mocha,
        '@babel': babel,
    },

    languageOptions: {
        globals: {
            ...globals.browser,
            ...globals.node,
            ...globals.jquery,
            ...globals.amd,
            ...globals.mocha,
            __base: false,
            expect: false,
        },

        parser: babelParser,
        ecmaVersion: 6,
        sourceType: 'module',

        parserOptions: {
            requireConfigFile: false,
        },
    },

    rules: {
        curly: 2,
        eqeqeq: ['error', 'smart'],
        quotes: [2, 'single', 'avoid-escape'],
        semi: 2,

        'no-unused-vars': ['error', {
			caughtErrors: 'none',
            varsIgnorePattern: 'should|expect',
        }],

        'mocha/no-mocha-arrows': 0,
    },
}];