Function isWritable

lib/internal/streams/utils.js:182–189

(stream)

}

function isWritable(stream) {
  if (stream && stream[kIsWritable] != null) return stream[kIsWritable];
  if (typeof stream?.writable !== 'boolean') return null;
  if (isDestroyed(stream)) return false;
  return isWritableNodeStream(stream) &&
    stream.writable &&
    !isWritableEnded(stream);
}

function isFinished(stream, opts) {
  if (!isNodeStream(stream)) {