Function isWritableNodeStream

lib/internal/streams/utils.js:50–57

(obj)

}

function isWritableNodeStream(obj) {
  return !!(
    obj &&
    typeof obj.write === 'function' &&
    typeof obj.on === 'function' &&
    (!obj._readableState || obj._writableState?.writable !== false) // Duplex
  );
}

function isDuplexNodeStream(obj) {
  return !!(