Re-add *.cjs.js file

Author: emrocode

package-lock.json

@@ -3,12 +3,13 @@
   "version": "1.1.8",
   "description": "A simple dark mode toggle library",
   "type": "module",
-  "main": "dist/darkify.umd.js",
+  "main": "dist/darkify.cjs.js",
   "module": "dist/darkify.esm.js",
   "browser": "dist/darkify.min.js",
   "types": "dist/darkify.d.ts",
   "files": [
     "dist/darkify.d.ts",
+    "dist/darkify.cjs.js",
     "dist/darkify.esm.js",
     "dist/darkify.umd.js",
     "dist/darkify.min.js"
@@ -37,6 +38,7 @@
   "author": "Emilio Romero <emrocode@gmail.com>",
   "license": "MIT",
   "devDependencies": {
+    "@rollup/plugin-commonjs": "^28.0.6",
     "@rollup/plugin-terser": "^0.4.4",
     "@rollup/plugin-typescript": "^12.1.4",
     "@types/jest": "^30.0.0",

package.json

@@ -1,5 +1,6 @@
 import typescript from '@rollup/plugin-typescript';
 import terser from '@rollup/plugin-terser';
+import commonjs from '@rollup/plugin-commonjs';
 import dts from 'rollup-plugin-dts';
 import cleanup from 'rollup-plugin-cleanup';
 import pkg from './package.json' with { type: 'json' };
@@ -20,6 +21,13 @@ const config = [
         format: 'esm',
         banner: BANNER,
       },
+      {
+        file: 'dist/darkify.cjs.js',
+        name: 'Darkify',
+        format: 'cjs',
+        exports: 'named',
+        banner: BANNER,
+      },
       {
         file: 'dist/darkify.umd.js',
         name: 'Darkify',
@@ -37,6 +45,7 @@ const config = [
     ],
     plugins: [
       typescript(),
+      commonjs(),
       cleanup({
         comments: 'none',
         extensions: ['ts', 'js'],