Function isWritableEnded

lib/internal/streams/utils.js:129–136

(stream)

// Have been end():d.
function isWritableEnded(stream) {
  if (!isWritableNodeStream(stream)) return null;
  if (stream.writableEnded === true) return true;
  const wState = stream._writableState;
  if (wState?.errored) return false;
  if (typeof wState?.ended !== 'boolean') return null;
  return wState.ended;
}

// Have emitted 'finish'.
function isWritableFinished(stream, strict) {