Method cancel

lib/internal/webstreams/transfer.js:160–173

(reason)

  }

  async cancel(reason) {
    try {
      this[kState].port.postMessage({ type: 'error', value: reason });
    } catch (error) {
      if (error instanceof DOMException) {
        // eslint-disable-next-line no-ex-assign
        error = new CloneableDOMException(error.message, error.name);
      }
      this[kState].port.postMessage({ type: 'error', value: error });
      throw error;
    } finally {
      this[kState].port.close();
    }
  }
}

class CrossRealmTransformWritableSink {