Use `var module` to prevent emcc pollution

[xnuk]

for make 'use strict' compatible

[lovasoa]

Looking at the comment above, it looks like the variable is referencing the global module on purpose.

https://nodejs.org/api/modules.html#module

[xnuk]

I think it's okay, because its purpose is removing if (typeof module !== 'undefined') { module['exports'] = Module } in the emcc output. Currently emcc output does not use globalThis.module, window.module, or something else.

[lovasoa]

Ok ! Can you add a comment about that above, then ?