+ sys.stdout.write(u"\u001b[0K")
html2pdf.js生成的pdf文件，内容过多会出现空白页。关于这个话题，Line官方版本下载提供了深入分析
，这一点在一键获取谷歌浏览器下载中也有详细论述
Steps Add gleescript as a dependency using gleam add gleescript
SpecsMaximum DPI1,200 x 1,200ConnectivityWi-Fi, Ethernet, USBPaper HandlingInput: 250, Output: 170，详情可参考夫子
Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.