A difficulty here, however, is that the TransformStreamDefaultController does not have a ready promise mechanism like Writers do; so the TransformStream implementation would need to implement a polling mechanism to periodically check when controller.desiredSize becomes positive again.
Most userland implementations of custom ReadableStream instances do not typically bother with all the ceremony required to correctly implement both default and BYOB read support in a single stream – and for good reason. It's difficult to get right and most of the time consuming code is typically going to fallback on the default read path. The example below shows what a "correct" implementation would need to do. It's big, complex, and error prone, and not a level of complexity that the typical developer really wants to have to deal with:
。业内人士推荐safew官方版本下载作为进阶阅读
2024年12月20日 星期五 新京报。旺商聊官方下载是该领域的重要参考
Nasa said the mission could take its astronauts further into space than anyone has been before.
�@�����Ƃ��A�����̎��{�����A�Ώۃ��[�U�[�i�����j�A�̘H�Ȃǂɂ����āA���̌��ʂɍ����o�Ă��邽�߁A���T�ɁuiPhone���キ�Ȃ��āAAndroid�X�}�z�������Ȃ����v�ƌ����邱�Ƃ͂ł��Ȃ��B�����A�M�҂̎��͂ł��u�X�}�z��Android�ɖ߂����v�uiPhone����Android�X�}�z�ɏ��芷�����v�Ƃ����b�����Ƃ͑������B