transform not working for windows

[VikasAgarwal1984]

Sample Code:
https://github.com/VikasAgarwal1984/package-deploy-learn/tree/0.0.1

Issue:
Transform not working

Jest config file path
https://github.com/VikasAgarwal1984/package-deploy-learn/blob/0.0.1/jest.config.js

To understand what is failing, i updated the index file in node_modules to the content copied in below link:
https://github.com/VikasAgarwal1984/package-deploy-learn/blob/0.0.1/dev/index.js

I think the issue is
require("${postcssRunner}")(

does not work as everything is Stringified, and ${} flat the '' in windows. so when code gets evaluated it fails.
To double check, i debugged with following paths:

// works
    // const postcssRunner = 'D:\\\\git\\\\package-deploy-learn\\\\node_modules\\\\jest-transform-css\\\\postcss-runner.js';
    //const postcssRunner = 'D:/git/package-deploy-learn/node_modules/jest-transform-css/postcss-runner.js';

    // does not work
    const postcssRunner = `${__dirname}/postcss-runner.js`;
    //const postcssRunner = p.normalize(`${__dirname}/postcss-runner.js`);
    //const postcssRunner = 'D:\\git\\package-deploy-learn\\node_modules\\jest-transform-css\\postcss-runner.js';
    //const postcssRunner = 'D:\\git\\package-deploy-learn\\node_modules\\jest-transform-css/postcss-runner.js';


\\\\ gets translate to \\ in  require("${postcssRunner}") and path works.

I tested above Repository in Ubuntu VM, there was no issue, and npm run test works fine.
Any insights?

[dferber90]

Thanks for your nice report! Maybe using path.join could work?

So something like const postcssRunner = path.join(__dirname, "postcss-runner.js") could do the trick?

[VikasAgarwal1984]

I think issue is with below line:

File:
https://github.com/dferber90/jest-transform-css/blob/master/index.js

Line No: 71
require("${postcssRunner}")(

We need to preserve'\\',
Something like below should work I believe.
https://stackblitz.com/edit/web-platform-zoctv4?file=script.js