Inconsistent with Typescript

[JaffParker]

I use Create React App with Typescript, so to make the macro work in development, I have to use ES2015 export syntax in tailwind.ts:

export default {
  // config goes here
}

This, however, doesn't work in the build process. For some reason during build, the macro expects specifically the CommonJS export syntax. For now I just change it manually, but I think it's obvious why it's not ideal.

[rafamel]

Another issue with the CRA setup is that we're forced to place the config file within src, hence tempted to use variables and importing stuff that will only be defined on the browser. Since this is a compile-time config, it should be separated from runtime.

Requiring files on babel-plugin-macros.config.js is perfectly fine so I'd propose instead of -or in addition to- being able to define the file it lives at, we can provide the config object itself. This would solve both issues w/ CRA.