Emscripten module compatibility

[Garciat]

Builder makes the emscripten shell think it's running in node. It then tries to require node modules like fs.

Related discussion here. Possible solution here.

[guybedford]

@Garciat it sounds like the wrapper assumes it is in Node if it is using CommonJS with process defined.

You can alter the way that SystemJS interprets the module by forcing it to be loaded as a global or amd format via meta configuration, which may then work better for building the wrapper. See https://github.com/systemjs/systemjs/blob/master/docs/module-formats.md for more info on format handling in SystemJS.

[Garciat]

@guybedford I'll take a look; thanks 👍

[Garciat]

Yup. That did the trick.

For future reference:

new Builder({
    ...

    meta: {
        'myapp/emscripten_module': {
            format: 'global'
        }
    }
})