I'm using an external SCSS package to get styling in my app. The external style sheet has reference to some assets using the css URL function (background-image: url("path/to/asset.svg");). This tries to get resolved to ./path/to/asset.svg, and fails because it can't be found. I've tried adding the assets to the SASS includePaths config within next.config, but this doesn't resolve it.
The next thing I wanted to try was to just ignore the processing of the URLs and to publish the assets. However, I can't seem to find out what is doing the processing? I'm seeing ___CSS_LOADER_EXPORT___ which makes me think it's the css-loader from webpack, but I don't see this when I look at the modules and loaders that are provided in the default webpack config.
How can I adjust the CSS processing to allow me to skip processing these URLs by using the css-loader url config? https://webpack.js.org/loaders/css-loader/#url