No, the whole point is that they already wrote a compiler, so the in this case Javascript is not interpreted. You only have to bootstrap it once. They would ha

No, the whole point is that they already wrote a compiler, so the in this case Javascript is not interpreted. You only have to bootstrap it once. They would have had to make their compiler provide a batch compilation mode in addition to the incremental compilation mode, but that should not be a pain point. After all, batch compiling is easier to do than incremental compiling.