Function isIterable

lib/internal/streams/utils.js:112–118

(obj, isAsync)

}

function isIterable(obj, isAsync) {
  if (obj == null) return false;
  if (isAsync === true) return typeof obj[SymbolAsyncIterator] === 'function';
  if (isAsync === false) return typeof obj[SymbolIterator] === 'function';
  return typeof obj[SymbolAsyncIterator] === 'function' ||
    typeof obj[SymbolIterator] === 'function';
}

function isDestroyed(stream) {
  if (!isNodeStream(stream)) return null;