From 5eccab835a871fccdfa2e9b7b72534825a0d7964 Mon Sep 17 00:00:00 2001
From: Leroy Korterink <leroy@mediamonks.com>
Date: Wed, 29 May 2024 09:45:32 +0200
Subject: [PATCH] Create waitFor function

---
 src/index.ts                 |  1 +
 src/utils/waitFor/waitFor.ts | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 src/utils/waitFor/waitFor.ts

diff --git a/src/index.ts b/src/index.ts
index 815250e..89365a6 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -39,3 +39,4 @@ export * from './utils/arrayRef/arrayRef.js';
 export * from './utils/createTimeout/createTimeout.js';
 export * from './utils/isRefObject/isRefObject.js';
 export * from './utils/unref/unref.js';
+export * from './utils/waitFor/waitFor.js';
diff --git a/src/utils/waitFor/waitFor.ts b/src/utils/waitFor/waitFor.ts
new file mode 100644
index 0000000..a3fc410
--- /dev/null
+++ b/src/utils/waitFor/waitFor.ts
@@ -0,0 +1,30 @@
+export class WaitForTimeoutError extends Error {
+  public constructor() {
+    super('Timeout error while waiting for condition');
+    this.name = 'WaitForTimeoutError';
+  }
+}
+
+export type WaitForOptions = {
+  interval?: number;
+  timeout?: number;
+};
+
+export function waitFor(
+  callback: () => boolean,
+  { interval = 10, timeout = 1000 }: WaitForOptions = {},
+): Promise<void> {
+  return new Promise((resolve, reject) => {
+    const timeoutId = setTimeout(() => {
+      reject(new WaitForTimeoutError());
+    }, timeout);
+
+    const intervalId = setInterval(() => {
+      if (callback()) {
+        clearTimeout(timeoutId);
+        clearInterval(intervalId);
+        resolve();
+      }
+    }, interval);
+  });
+}