Function setWeakAbortSignalTimeout

lib/internal/abort_controller.js:202–217

(weakRef, delay)

// the created timer object. Separately, we add the signal to a
// FinalizerRegistry that will clear the timeout when the signal is gc'd.
function setWeakAbortSignalTimeout(weakRef, delay) {
  const timeout = setTimeout(() => {
    const signal = weakRef.deref();
    if (signal !== undefined) {
      clearTimeoutRegistry.unregister(signal);
      gcPersistentSignals.delete(signal);
      abortSignal(
        signal,
        new DOMException(
          'The operation was aborted due to timeout',
          'TimeoutError'));
    }
  }, delay);
  timeout.unref();
  return timeout;
}

class AbortSignal extends EventTarget {