Merge pull request #3283 from nestjs/copilot/sub-pr-3280-again

fix: support CLI rspackPath override in getRspackConfigPath

Author: kamilmysliwiec

lib/compiler/helpers/get-rspack-config-path.ts

@@ -3,6 +3,7 @@ import { getValueOrDefault } from './get-value-or-default.js';
 
 /**
  * Returns the path to the rspack configuration file to use for the given application.
+ * CLI option `rspackPath` takes precedence over the configuration file.
  * @param configuration Configuration object.
  * @param cmdOptions Command line options.
  * @param appName Application name.
@@ -13,6 +14,10 @@ export function getRspackConfigPath(
   cmdOptions: Record<string, any>,
   appName: string | undefined,
 ) {
+  if (cmdOptions?.rspackPath) {
+    return cmdOptions.rspackPath as string;
+  }
+
   const builder = getValueOrDefault<Builder>(
     configuration,
     'compilerOptions.builder',

test/lib/compiler/helpers/get-rspack-config-path.spec.ts

@@ -99,4 +99,21 @@ describe('getRspackConfigPath', () => {
     const result = getRspackConfigPath(config, {}, 'my-app');
     expect(result).toBe('apps/my-app/rspack.config.js');
   });
+
+  it('should return the CLI rspackPath option when provided', () => {
+    const config = makeConfiguration({
+      compilerOptions: {
+        builder: {
+          type: 'rspack',
+          options: { configPath: 'rspack.config.js' },
+        },
+      },
+    });
+    const result = getRspackConfigPath(
+      config,
+      { rspackPath: 'custom-cli-rspack.config.ts' },
+      undefined,
+    );
+    expect(result).toBe('custom-cli-rspack.config.ts');
+  });
 });