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Yeah, there's a pretty overwhelming amount of browser APIs and functionality which isn't always (well-)documented to learn about. If I recall correctly Proxies

Yeah, there's a pretty overwhelming amount of browser APIs and functionality which isn't always (well-)documented to learn about. If I recall correctly Proxies wouldn't be detectable (seems to be supported by https://exploringjs.com/es6/ch_proxies.html#sec_detect-proxies https://exploringjs.com/es6/ch_proxies.html#sec_detect-proxi...) so long as your injected content script runs first (otherwise other code could presumably override the Proxy constructor). You should also be able to hook any embedded frames by setting `target: { ..., allFrames: true }`.

2bird3 1y ago
To note, there are undocumented detections to even Proxys, for example using `in` operator in v8 (such as `proxiedFunc in 1` for some proxied function). Really cool to see a project like this.
- webstrand 1y ago
  How do you use `in` in v8 to detect proxies? I assume its a difference in the exception, but the message and the cause were the same in both direct and proxied `x in 1`.
  - 2bird3 1y ago
    Ah wow, good catch- yeah, you're right, this technique seems to be patched