genSink

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.

public function genSink<TSinkType, TFinalResponseType>(
  HH\AsyncGenerator<null, TSinkType, void> $payload_generator,
  (function(?TSinkType, ?Exception): (string, ?bool)) $payloadEncode,
  (function(?string, ?Exception): TFinalResponseType) $finalResponseDecode,
): Awaitable<TFinalResponseType>;

Parameters

• HH\AsyncGenerator<null,TSinkType, void> $payload_generator
• (function(?TSinkType, ?Exception): (string, ?bool)) $payloadEncode
• (function(?string, ?Exception): TFinalResponseType) $finalResponseDecode

Returns

• Awaitable<TFinalResponseType>