[tech234a]

Loosely related to porting the Firefox engine in unusual places: here is a project that ports Firefox's Gecko rendering engine to iOS as a sideloadable app (normally Apple only allows its own WebKit rendering engine in iOS apps): https://github.com/minh-ton/reynard-browser

[The_SamminAter]

Indeed. This is both the best and the only actively maintained way for older versions of iOS to use modern js.

[rlmineing_dead]

Starred, very cool!