Check wasm optimized output file exists
Created by: ascjones
Possible improvement for the source of this error message here:
Suspect that the installed version of wasm-opt
runs but doesn't produce the output file as expected.
I haven't reproduced it because my installation of wasm-opt
is valid and produces a optimized file, however this is a useful check to make anyway, since we have no guarantees that do_optimization
will write the optimized wasm fle.