Pass jesttransformcss options in jest.config

[Yankovsky]

Hey! I have monorepo structure with a slightly different jest.config for different packages, something like:

<root>
- package.json
- - package1
- - - jest.config.js
- - - jesttransformcss.config.js
- - package2
- - - jest.config.js

Now, if I run test command from the root dir it invokes 'test' commands in individual packages. Long story short in that configuration jesttransformcss.config.js is not located by the jest-transform-css.

I've checked jest docs, and, apparently, transformer support passing options like so {'\\.js$': ['babel-jest', {rootMode: 'upward'}]}

Let's support passing options in jest config directly instead of providing a separate config file?

[Yankovsky]

So, it will be something like:

transform: {
  "^.+\\.module\\.css$": ["jest-transform-css", {modules: true}]
}

[dferber90]

Sounds useful, do you wanna open a PR?

[Yankovsky]

Sure. Do you want to keep both options or only the transformer options?

[Yankovsky]

It's always easier to have only one way of doing things.

[dferber90]

Agreed 👍 Let's drop the other one