Refactor code structure for improved readability and maintainability

eslint.config.mjs

@@ -0,0 +1,32 @@
+import js from '@eslint/js';
+import globals from 'globals';
+
+export default [
+  {
+    files: ['**/*.js'],
+    ignores: [
+      'node_modules/**',
+      'data/**',
+      'public/audio/**',
+      'public/cover/**',
+      '**/*.mp3',
+      '.tmp/**',
+      'dist/**',
+      'coverage/**',
+    ],
+    languageOptions: {
+      ecmaVersion: 2023,
+      sourceType: 'module',
+      globals: {
+        ...globals.node,
+        ...globals.browser,
+      },
+    },
+    rules: {
+      ...js.configs.recommended.rules,
+      'no-unused-vars': ['warn', { argsIgnorePattern: '^_', varsIgnorePattern: '^_' }],
+  'no-console': 'off',
+  'no-empty': ['warn', { allowEmptyCatch: true }],
+    },
+  },
+];