Feature request: generate .js.flow file for each .css module

[alexkrolick]

Feature request:

Extend the JSON generation to create a similar xyz.js.flow file that could be used to map xyz.css to a Flow type definition, so that style imports are typesafe

[madyankin]

Unfortunately I have no enough time for the project, so PR's are welcome!

[axyz]

@alexkrolick you can do it easily with a side effect in a custom getJSON function

example implementation for typescript types:

https://github.com/utilitycss/atomic/blob/master/src/postcss/atomic-css-modules.ts#L243

https://github.com/utilitycss/atomic/blob/master/src/action/generate-atom-typings.ts