HH\Lib\IO\request_output
Requires the Hack Standard Library - Experimental Additions to be installed.
Facebook Engineer?
This function is available as IO\request_output() in Facebook's www repository.
Return the output handle for the current request
namespace HH\Lib\IO;
function request_output(): CloseableWriteHandle;
This should generally be used for sending data to clients. In CLI mode, this is usually the process STDOUT.