Update build script

package-lock.json

@@ -32,6 +32,30 @@
         "@types/node": "^12.6.9",
         "acorn": "^6.2.1"
       }
+    },
+    "source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "dev": true
+    },
+    "uglify-es": {
+      "version": "3.3.9",
+      "resolved": "https://registry.npmjs.org/uglify-es/-/uglify-es-3.3.9.tgz",
+      "integrity": "sha512-r+MU0rfv4L/0eeW3xZrd16t4NZfK8Ld4SWVglYBb7ez5uXFWHuVRs6xCTrf1yirs9a4j4Y27nn7SRfO6v67XsQ==",
+      "dev": true,
+      "requires": {
+        "commander": "~2.13.0",
+        "source-map": "~0.6.1"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "2.13.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.13.0.tgz",
+          "integrity": "sha512-MVuS359B+YzaWqjCL/c+22gfryv+mCBPHAv3zyVI2GN8EY6IRP8VwtasXn8jyyhvvq84R4ImN1OKRtcbIasjYA==",
+          "dev": true
+        }
+      }
     }
   }
 }

package.json

@@ -5,12 +5,15 @@
   "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "build": "rollup lib/index.js --format iife --name \"gazeclient\" --file build/gazeclient.js",
-    "postbuild": "cp build/gazeclient.js demo/gazeclient.js"
+    "build": "npm run rollup && npm run uglify",
+    "rollup": "rollup lib/index.js --sourcemap --format iife --name \"gazeclient\" --file build/gazeclient.js --banner \"// GazeClient Version 1.0 - [https://lab.las3.de/gitlab/eye-tracking-classroom/gaze-client.js]\"",
+    "uglify": "uglifyjs build/gazeclient.js -o build/gazeclient.min.js",
+    "postuglify": "cp build/gazeclient.min.js demo/gazeclient.min.js"
   },
   "author": "Alexander Bazo <alexanderbazo@googlemail.com>",
   "license": "MIT",
   "devDependencies": {
-    "rollup": "^1.19.4"
+    "rollup": "^1.19.4",
+    "uglify-es": "^3.3.9"
   }
 }