[DanWaterworth]

OK, I understand. I was under the impression that the purpose of the meta-interpreter was to create a virtual machine outside of the browser, but having re-read your README, I now understand this isn't the case.

Still, I would recommend trying to reuse PyPy's infrastructure, even if only for the short term. An immense amount of time and thought has gone into creating it that you would end up replicating otherwise.

Besides, PyPy doesn't just target C, it also target's JVM and .Net, so in writing a new backend for JS, you wouldn't be working against the grain.