fix(plugin-swc): use SWC when useAtYourOwnRisk_mutateSwcOptions is provided (#951)

Author: YarnSphere

packages/plugin-react-swc/CHANGELOG.md

@@ -6,6 +6,10 @@
 
 SSR applications can now initialize HMR runtime by importing `@vitejs/plugin-react-swc/preamble` at the top of their client entry instead of manually calling `transformIndexHtml`. This simplifies SSR setup for applications that don't use the `transformIndexHtml` API.
 
+### Use SWC when useAtYourOwnRisk_mutateSwcOptions is provided ([#951](https://github.com/vitejs/vite-plugin-react/pull/951))
+
+Previously, this plugin did not use SWC if plugins were not provided even if `useAtYourOwnRisk_mutateSwcOptions` was provided. This is now fixed.
+
 ## 4.1.0 (2025-09-17)
 
 ### Set SWC cacheRoot options

packages/plugin-react-swc/src/index.ts

@@ -198,7 +198,7 @@ const react = (_options?: Options): Plugin[] => {
         return { code: newCode ?? result.code, map: result.map }
       },
     },
-    options.plugins
+    options.plugins || options.useAtYourOwnRisk_mutateSwcOptions
       ? {
           name: 'vite:react-swc',
           apply: 'build',