initial

utils/delayedPromise.js

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+/**
+ * 
+ * @returns {(Promise & {resolve: (r?: any)=>void; reject: (reason)=>void;})}
+ */
+export function delayedPromise() {
+    let res = null;
+    let rej = null;
+
+    const deferredPromise = new Promise((resolve, reject) => {
+        res = resolve;
+        rej = reject;
+    });
+
+    Object.assign(deferredPromise, {
+        resolve: res,
+        reject: rej,
+    });
+
+    return deferredPromise;
+}