The Writer is not a concrete class. Any object that implements write(), end(), and abort() can be a writer making it easy to adapt existing APIs or create specialized implementations without subclassing. There's no complex UnderlyingSink protocol with start(), write(), close(), and abort() callbacks that must coordinate through a controller whose lifecycle and state are independent of the WritableStream it is bound to.
Innovations in recent years to make testing methods more sophisticated include thermal imaging, light analysis using lasers, and DNA profiling.
，详情可参考搜狗输入法2026
See what I’m getting at? JavaScript code is fundamentally a “userland” thing. The code you ship is accessible to the user to modify and fuck about with however they wish.
不过他也坦承，「训练之后仍有大量工作要做」。稳定性、成本、安全合规，一堆问题还没解决，离真正可用还有距离。