Function prefinish

lib/internal/streams/writable.js:906–926

(stream, state)

}

function prefinish(stream, state) {
  if ((state[kState] & (kPrefinished | kFinalCalled)) !== 0) {
    return;
  }

  if (typeof stream._final === 'function' && (state[kState] & kDestroyed) === 0) {
    state[kState] |= kFinalCalled | kSync;
    state.pendingcb++;

    try {
      stream._final((err) => onFinish(stream, state, err));
    } catch (err) {
      onFinish(stream, state, err);
    }

    state[kState] &= ~kSync;
  } else {
    state[kState] |= kFinalCalled | kPrefinished;
    stream.emit('prefinish');
  }
}

function finishMaybe(stream, state, sync) {
  if (needFinish(state)) {