Webpack 4 Support

[royprigat]

Hi,

I am attempting to use the Webpack plugin 'ExposeRuntimeCssAssetsPlugin' with Webpack version 4.44.2, but it seems to only be working with Webpack 5.

Here is the error I get:
Error: Cannot find module 'webpack/lib/RuntimeModule'
Require stack:

• C:\Users\rprigat\workspace\ibi-studio-connectivity\node_modules\single-spa-css\ExposeRuntimeCssAssetsPlugin.cjs

Any way to make this work with Webpack 4?

Thanks

[joeldenning]

Hi @royprigat, this is a known limitation of single-spa-css - I authored it for webpack 5 with the intention of coming back to it for webpack 4. This plugin is tied a lot to html-webpack-plugin, which was mostly rewritten for webpack 5. So it's not a simple fix to get single-spa-css to work with webpack 4 - requires a fully separate implementation.

My intention with this project was to see if it worked with webpack 5 and then add it to create-single-spa, then add webpack 4 support. However, I've gotten busy with other things so I haven't worked on it for a while. I doubt that I'll work on webpack 4 support in the near future, as there are a lot of other things consuming my time right now. I'll add a note in the readme about webpack 4/5. Contributions for this are accepted.