Function onSignalAbort

lib/internal/streams/iter/utils.js:64–70

* Register a handler for an AbortSignal, handling the already-aborted case. * If the signal is already aborted, calls handler immediately. * Otherwise, adds a one-time 'abort' listener. * @param {AbortSignal} signal * @param {Function} handler

(signal, handler)

 * @param {Function} handler
 */
function onSignalAbort(signal, handler) {
  if (signal.aborted) {
    handler();
  } else {
    signal.addEventListener('abort', handler, { __proto__: null, once: true });
  }
}

/**
 * Compute the minimum cursor across a set of consumers and count how many