{
  const duplex = new PassThrough();
  const writableStream = newWritableStreamFromStreamWritable(duplex);
  const ec = new TextEncoder();
  const arrayBuffer = ec.encode('hello').buffer;
  writableStream
    .getWriter()
    .write(arrayBuffer)
    .then(common.mustCall());

  duplex.on('data', common.mustCall((chunk) => {
    assert(chunk instanceof Buffer);
    assert(chunk.equals(Buffer.from('hello')));
  }));
}

{
  const duplex = new PassThrough({ objectMode: true });
  const writableStream = newWritableStreamFromStreamWritable(duplex);
  const ec = new TextEncoder();
  const arrayBuffer = ec.encode('hello').buffer;
  writableStream
    .getWriter()
    .write(arrayBuffer)
    .then(common.mustCall());

  duplex.on('data', common.mustCall((chunk) => {
    assert(chunk instanceof ArrayBuffer);
    assert.strictEqual(chunk, arrayBuffer);
  }));
}