fix(core): update

ts/smartpromise.classes.cumulativedeferred.ts

@@ -0,0 +1,26 @@
+import { defer } from "./smartpromise.classes.deferred.js";
+
+export class CumulativeDeferred {
+  private accumulatedPromises: Promise<any>[] = [];
+  private deferred = defer();
+  public promise = this.deferred.promise;
+
+  constructor() {
+    setTimeout(async () => {
+      while (this.accumulatedPromises.length > 0) {
+        const poppedPromise = this.accumulatedPromises.shift();
+        await poppedPromise;
+      }
+      this.deferred.resolve();
+    }, 0);
+  }
+
+  public addPromise(promiseArg: Promise<any>) {
+    this.accumulatedPromises.push(promiseArg);
+  }
+}
+
+
+export const cumulativeDefer = () => {
+  return new CumulativeDeferred();
+}