Issue #3086016: can't even install the module because of the path of .js

composer.json

 {
-  "name": "drupal/colorbutton",
-  "type": "drupal-module",
-  "description": "Adds the Color Button plugin to CKEditor.",
-  "keywords": ["Drupal"],
-  "license": "GPL-2.0-or-later",
-  "homepage": "http://drupal.org/project/colorbutton",
-  "minimum-stability": "dev",
-  "authors": [
-    {
-      "name": "Kevin Quillen (kevinquillen)",
-      "homepage": "https://www.drupal.org/u/kevinquillen",
-      "role": "Maintainer"
+    "name": "drupal/colorbutton",
+    "type": "drupal-module",
+    "description": "Adds the Color Button plugin to CKEditor.",
+    "keywords": ["Drupal"],
+    "license": "GPL-2.0-or-later",
+    "homepage": "http://drupal.org/project/colorbutton",
+    "minimum-stability": "dev",
+    "authors": [
+        {
+            "name": "Kevin Quillen (kevinquillen)",
+            "homepage": "https://www.drupal.org/u/kevinquillen",
+            "role": "Maintainer"
+        }
+    ],
+    "support": {
+        "issues": "http://drupal.org/project/issues/colorbutton",
+        "source": "http://cgit.drupalcode.org/colorbutton"
+    },
+    "require": {
+        "drupal/panelbutton": "^1.3",
+        "drupal-ckeditor-libraries-group/colorbutton": "^4.16.0"
     }
-  ],
-  "support": {
-    "issues": "http://drupal.org/project/issues/colorbutton",
-    "source": "http://cgit.drupalcode.org/colorbutton"
-  },
-  "require": {
-    "drupal/panelbutton": "^1.3"
-  }
 }