download as buffer

util/Util.js

@@ -10,6 +10,15 @@ class Util {
         throw new Error("Class may not be instantiated.");
     }
 
+    static downloadAsBuffer(source) {
+        return new Promise((resolve, reject) => {
+            fetch(source).then(res => {
+                if(res.ok) resolve(res.buffer());
+                else reject(res.statusText);
+            });
+        });
+    }
+
     static readdirRecursive(directory) {
 
         const result = [];