fix: add required minimizer setting to the generated Nest rspack conf…

…iguration

packages/rspack/src/utils/generator-utils.ts

@@ -277,6 +277,27 @@ function createConfig(
   } else if (options.framework === 'nest') {
     return `
     const { composePlugins, withNx } = require('@nx/rspack');
+    const rspack = require('@rspack/core');
+
+    config.optimization = {
+      minimizer: [
+        new rspack.SwcJsMinimizerRspackPlugin({
+          minimizerOptions: {
+            // We need to disable mangling and compression for class names and function names for Nest.js to work properly
+            // The execution context class returns a reference to the class/handler function, which is for example used for applying metadata using decorators
+            // https://docs.nestjs.com/fundamentals/execution-context#executioncontext-class
+            compress: {
+              keep_classnames: true,
+              keep_fnames: true,
+            },
+            mangle: {
+              keep_classnames: true,
+              keep_fnames: true,
+            },
+          },
+        }),
+      ],
+    };
 
     module.exports = composePlugins(withNx(), (config) => {
       return config;