I agree that for CPU emulation, something low-level like typed arrays is absolutely necessary. However, with more high-level code, in general there shouldn't b

I agree that for CPU emulation, something low-level like typed arrays is absolutely necessary. However, with more high-level code, in general there shouldn't be such a need. For example, RPython is very high-level, but is compiled into very efficient C. The same could be done for JavaScript (and to some degree already is).