IsFailed

:::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. :::

Indicates whether the Awaitable associated with this wrapper exited abnormally via an exception of somoe sort

public function isFailed(): bool;

If isFailed() returns true, isSucceeded() returns false.

Returns

• bool - true if the Awaitable failed; false otherwise.