WaitForNotificationAsync

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

Asynchronously wait for the condition variable to be notified and return the result or throw the exception received via notification

final public function waitForNotificationAsync(
  Awaitable<void> $notifiers,
): Awaitable<T>;

The caller must provide an Awaitable $notifiers (which must be a WaitHandle) that must not finish before the notification is received. This means $notifiers must represent work that is guaranteed to eventually trigger the notification. As long as the notification is issued only once, asynchronous execution unrelated to $notifiers is allowed to trigger the notification.

Parameters

• Awaitable<void>$notifiers

Returns

• Awaitable<T>