SourceMapDevToolPlugin does not work - ignored

[zelphir]

After #350 (using optimize-css-assets-webpack-plugin to minify css files), webpack.SourceMapDevToolPlugin is ignored (NMFR/optimize-css-assets-webpack-plugin#99), that means that is not possible to create custom sourcemaps for CSS files

[zelphir]

workaround:

in webpack config:

    const filteredMinimizers = config.optimization.minimizer.filter(
      (plugin) => plugin.constructor.name !== 'OptimizeCssAssetsWebpackPlugin'
    );
    config.optimization.minimizer = filteredMinimizers;

And use postcss to minify css files.

[timneutkens]

Hi, thanks for creating an issue. We currently recommend using https://nextjs.org/docs/basic-features/built-in-css-support as the plugins have been deprecated in favor of the built-in support.