Function getHighWaterMark

lib/internal/streams/state.js:33–45

(state, options, duplexKey, isDuplex)

}

function getHighWaterMark(state, options, duplexKey, isDuplex) {
  const hwm = highWaterMarkFrom(options, isDuplex, duplexKey);
  if (hwm != null) {
    if (!NumberIsInteger(hwm) || hwm < 0) {
      const name = isDuplex ? `options.${duplexKey}` : 'options.highWaterMark';
      throw new ERR_INVALID_ARG_VALUE(name, hwm);
    }
    return MathFloor(hwm);
  }

  // Default value
  return getDefaultHighWaterMark(state.objectMode);
}

module.exports = {
  getHighWaterMark,