Request Output

:::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. :::

Return the output handle for the current request

namespace HH\Lib\IO;

function request_output(): WriteHandle;

This should generally be used for sending data to clients. In CLI mode, this is usually the process STDOUT.

This MAY be a CloseableWriteFDHandle.

Returns

• WriteHandle