eslint.config.js

import globals from 'globals';
import pluginJs from '@eslint/js';
import tseslint from 'typescript-eslint';
import stylistic from '@stylistic/eslint-plugin';

/* ========================================================================== */

/** @type {import('eslint').Linter.Config[]} */
export default [
	{ files: ['**/*.{js,mjs,cjs,ts}'] },
	{ languageOptions: { globals: globals.browser } },

	pluginJs.configs.recommended,
	...tseslint.configs.recommended,

	{
		plugins: { '@stylistic': stylistic },
		rules: {
			// This rule enforces at least one newline at the end of
			// non-empty files.
			'@stylistic/eol-last': ['error', 'always'],

			// This rule enforces a consistent indentation style.
			'@stylistic/indent': ['error', 'tab'],

			'@stylistic/max-len': ['error', {
				code: 120,
				comments: 80,
				ignoreTemplateLiterals: true,
				ignoreUrls: true
			}],

			'@stylistic/padding-line-between-statements': ['error', {
				blankLine: 'always',
				next: 'return',
				prev: '*',
			}],

			// This rule enforces the consistent use of single quotes.
			'@stylistic/quotes': ['error', 'single'],

			// This rule enforces consistent use of semicolons.
			'@stylistic/semi': ['error', 'always']
		}
	}
];