Function isWritable

lib/internal/streams/iter/classic.js:526–532

()

  }

  function isWritable() {
    // Duck-typed streams may not have these properties -- treat missing
    // as false (i.e., writable is still open).
    return !(writable.destroyed ?? false) &&
           !(writable.writableFinished ?? false) &&
           !(writable.writableEnded ?? false);
  }

  function isFull() {
    return (writable.writableLength ?? 0) >= hwm;