Keep original comments from less file

[kriku]

It'll be useful to keep original comments when doing customization.

I mean in example like this, I have to use less-loader modifyVars to customize theme.. It could be like:

// webpack configuration
const paletteLess = fs.readFileSync(LESS_FILE, 'utf8');
const palette = lessToJs(paletteLess);
... 
// less-loader options
    ...    modifyVars: palette
...

In this case I don't work with js object directly, but also I couldn't set variables in less file with js functions... So I prefer use lessToJs explicitly, to form js file, then I can use nodejs and webpack power for doing different tricks:

// palette.js
const colors = require('./colors.json');

module.exports = {
    '@normal-color': colors['Light Black'],
    '@primary-color': colors['Blue'],
    // and all power of importing JSON to variables, or js functions and so on
};

Trick with colors.json in particular, caused by the inability import es modules from react-app to webpack configuration, but it fine to import json in both...

But anyway, it would be helpful if you add option to save original comments from less file.