readByteAsync
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.
Read a single byte from the handle
public function readByteAsync(
?int $timeout_ns = NULL,
): Awaitable<string>;
Fails with EPIPE if the handle is closed or otherwise unreadable.
Parameters
?int $timeout_ns = NULL