+export type ResolveAfterPromise = {
+ counter: () => void,
+ promise: Promise<void>
+};
+
+export const resolveAfter = function (timesUntilResolve: number): ResolveAfterPromise {
+
+ let counter = null;
+ let currentValue = 0;
+
+ if (timesUntilResolve <= 0) {
+ throw new Error('Resolve after requires a positive integer');
+ }
+
+ const promise: Promise<void> = new Promise((resolvePromise) => {
+
+ counter = () => {
+
+ if (++currentValue === timesUntilResolve) {
+ resolvePromise();
+ }
+ };
+ });
+
+ return {
+ counter,
+ promise
+ };
+};