Instead of hardcoding the expected string, it captures the actual native code string from the original function before hooking it, then returns that exact string. This way, no matter what browser, no matter what platform, the spoofed toString returns precisely the same string that the original function would have returned. It is, in effect, a perfect forgery.
But engineers want water in their pipes, not fish.
。关于这个话题，搜狗输入法下载提供了深入分析
截至2026年1月的12個月內，美國通脹率為2.4%，低於拜登總統任期最後一年3%的水平。
These optimizations are difficult to implement, frequently error-prone, and lead to inconsistent behavior across runtimes. Bun's "Direct Streams" optimization takes a deliberately and observably non-standard approach, bypassing much of the spec's machinery entirely. Cloudflare Workers' IdentityTransformStream provides a fast-path for pass-through transforms but is Workers-specific and implements behaviors that are not standard for a TransformStream. Each runtime has its own set of tricks and the natural tendency is toward non-standard solutions, because that's often the only way to make things fast.