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Watchman Sync Sub

hphp/hack/manual/apis/Functions/HH/watchman_sync_sub.md

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:::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. :::

Hack
namespace HH;

function watchman_sync_sub(
  string $sub_name,
  int $timeout_ms = 0,
): Awaitable<bool>;

Parameters

  • string $sub_name
  • int $timeout_ms = 0

Returns

<!-- HHAPIDOC -->