Function onConstruct

lib/internal/streams/destroy.js:272–297

(err)

  let called = false;

  function onConstruct(err) {
    if (called) {
      errorOrDestroy(stream, err ?? new ERR_MULTIPLE_CALLBACK());
      return;
    }
    called = true;

    const r = stream._readableState;
    const w = stream._writableState;
    const s = w || r;

    if (r) {
      r[kState] |= kConstructed;
    }
    if (w) {
      w[kState] |= kConstructed;
    }

    if (s.destroyed) {
      stream.emit(kDestroy, err);
    } else if (err) {
      errorOrDestroy(stream, err, true);
    } else {
      stream.emit(kConstruct);
    }
  }

  try {
    stream._construct((err) => {