next.config.js

const MonacoWebpackPlugin = require("monaco-editor-webpack-plugin");
const withTM = require("next-transpile-modules")([
  // `monaco-editor` isn't published to npm correctly: it includes both CSS
  // imports and non-Node friendly syntax, so it needs to be compiled.
  "monaco-editor"
]);

module.exports = withTM({
  webpack(config) {
    const rule = config.module.rules
      .find(rule => rule.oneOf)
      .oneOf.find(
        r =>
          // Find the global CSS loader
          r.issuer && r.issuer.include && r.issuer.include.includes("_app")
      );
    if (rule) {
      rule.issuer.include = [
        rule.issuer.include,
        // Allow `monaco-editor` to import global CSS:
        /[\\/]node_modules[\\/]monaco-editor[\\/]/
      ];
    }

    config.plugins.push(new MonacoWebpackPlugin({ languages: ["javascript"] }));
    return config;
  }
});

After modified the code like above, the module.css file don't work anymore, how can I make module.css work?