Most (if not all) callbacks are registered

src/Util/Callbackify.ts

@@ -0,0 +1,27 @@
+
+
+export default function callbackify(func: (...args: any[]) => Promise<any>): Function {
+    return (...args: any[]) => {
+        const onlyArgs: any[] = [];
+        let maybeCallback: Function | null = null;
+
+        for (const arg of args) {
+            if (typeof arg === 'function') {
+                maybeCallback = arg;
+                break;
+            }
+
+            onlyArgs.push(arg);
+        }
+
+        if (!maybeCallback) {
+            throw new Error("Missing callback parameter!");
+        }
+
+        const callback = maybeCallback;
+
+        func(...onlyArgs)
+            .then((data: any) => callback(null, data))
+            .catch((err: any) => callback(err))
+    }
+}