Function executeFunctionHook

source code/utils/hooks.ts:4742–4840

({
  hook,
  messages,
  hookName,
  toolUseID,
  hookEvent,
  timeoutMs,
  signal,
}: {
  hook: FunctionHook
  messages: Message[]
  hookName: string
  toolUseID: string
  hookEvent: HookEvent
  timeoutMs: number
  signal?: AbortSignal
})

}

async function executeFunctionHook({
  hook,
  messages,
  hookName,
  toolUseID,
  hookEvent,
  timeoutMs,
  signal,
}: {
  hook: FunctionHook
  messages: Message[]
  hookName: string
  toolUseID: string
  hookEvent: HookEvent
  timeoutMs: number
  signal?: AbortSignal
}): Promise<HookResult> {
  const callbackTimeoutMs = hook.timeout ?? timeoutMs
  const { signal: abortSignal, cleanup } = createCombinedAbortSignal(signal, {
    timeoutMs: callbackTimeoutMs,
  })

  try {
    // Check if already aborted
    if (abortSignal.aborted) {
      cleanup()
      return {
        outcome: 'cancelled',
        hook,
      }
    }

    // Execute callback with abort signal
    const passed = await new Promise<boolean>((resolve, reject) => {
      // Handle abort signal
      const onAbort = () => reject(new Error('Function hook cancelled'))
      abortSignal.addEventListener('abort', onAbort)

      // Execute callback
      Promise.resolve(hook.callback(messages, abortSignal))
        .then(result => {
          abortSignal.removeEventListener('abort', onAbort)
          resolve(result)
        })
        .catch(error => {
          abortSignal.removeEventListener('abort', onAbort)
          reject(error)
        })
    })

    cleanup()

    if (passed) {
      return {
        outcome: 'success',
        hook,
      }
    }