init an await on each folder

.gitignore

 /node_modules
-.idea/
\ No newline at end of file
+/assets
+.idea/
+
+.DS_Store
\ No newline at end of file

imagemin.js

-#!/usr/bin/node
-
-const imagemin = require('imagemin-keep-folder');
+const imagemin = require("imagemin");
 const imageminPngquant = require('imagemin-pngquant');
 const imageminMozjpeg = require('imagemin-mozjpeg');
 
-if (process.argv.length !== 4) {
-    console.log('Usage: minify [source directory] [destination directory]');
-    return;
+var fs = require('fs');
+
+var data_ = {}
+
+// Change value here for now ------------------
+
+var input = './assets/cat';
+var output = './assets/output';
+
+// ------------------
+
+console.log('✅  - Minify from ' + input + ' to ' + output);
+
+getFiles(input);
+
+function getFiles(dir, files_) {
+
+    files_ = files_ || [];
+    var files = fs.readdirSync(dir);
+
+    for (var i in files) {
+        var name = dir + '/' + files[i];
+
+        if (fs.statSync(name).isDirectory()) {
+            getFiles(name, files_);
+        } else {
+            if (~name.indexOf('.png') || ~name.indexOf('.jpg') || ~name.indexOf('.jpeg') || ~name.indexOf('.JPG')) {
+                if (!data_.hasOwnProperty(dir)) {
+                    data_[dir] = [files[i]];
+                } else {
+                    data_[dir].push(files[i]);
+                }
+            }
+        }
+    }
 }
 
-const srcDir = process.argv[2];
-const destinationDir = process.argv[3];
-
-console.log('minify from ' + srcDir + ' to ' + destinationDir);
-
-imagemin([srcDir + '/**/*.{jpg,png}'], {
-        replaceOutputDir: output => {
-            return output.replace(srcDir, destinationDir);
-        },
-        plugins: [
-            imageminMozjpeg({
-                quality: 70
-            }),
-            imageminPngquant({
-                quality: [0.6, 0.8]
-            })
-        ]
-}).then(files =>{
-    files.forEach(file=>{
-        console.log(file.path);
-    });
-});
\ No newline at end of file
+asyncCall(data_);
+
+async function asyncCall(data) {
+
+    for (let [key, value] of Object.entries(data)) {
+
+        console.log(`${Number(value.length)} files`);
+
+        await imagemin([key + '/*.{jpg,png}'], {
+            destination: output + (key.replace(input,"")),
+            plugins: [
+                imageminMozjpeg({
+                    quality: 70
+                }),
+                imageminPngquant({
+                    quality: [0.5, 0.6]
+                })
+            ]
+        });
+
+        console.log(`🛂  minify ---> ${key} to ${output + (key.replace(input,""))}` );
+    }
+
+    console.log(`✅  done`);
+
+}

package.json

 {
-  "name": "imagemin",
+  "name": "imageminifier",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
@@ -13,6 +13,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "imagemin": "^7.0.1",
     "imagemin-keep-folder": "^5.3.2",
     "imagemin-mozjpeg": "^8.0.0",
     "imagemin-pngquant": "^8.0.0"