chore: move retryOnThrottled to frontend-shared

packages/frontend-shared/js/retry-on-throttled.ts

@@ -0,0 +1,40 @@
+async function sleep(ms: number): Promise<void> {
+	return new Promise((resolve) => {
+		window.setTimeout(() => {
+			resolve();
+		}, ms);
+	});
+}
+
+export async function retryOnThrottled<T>(f: ()=>Promise<T>, retryCount = 5): Promise<T> {
+	let lastOk = false;
+	let lastResultOrError: T;
+	for (let i = 0; i < retryCount; i++) {
+		const [ok, resultOrError] = await f()
+			.then(result => [true, result])
+			.catch(err => [false, err]);
+
+		lastOk = ok;
+		lastResultOrError = resultOrError;
+
+		if (ok) {
+			break;
+		}
+
+		// RATE_LIMIT_EXCEEDED
+		if (resultOrError?.id === 'd5826d14-3982-4d2e-8011-b9e9f02499ef') {
+			await sleep(resultOrError?.info?.fullResetMs ?? 1000);
+			continue;
+		}
+
+		// Throw for non-throttling errors
+		throw resultOrError;
+	}
+
+	if (lastOk) {
+		return lastResultOrError!;
+	} else {
+		// Give up after getting throttled too many times
+		throw lastResultOrError!;
+	}
+}