CuratedTypeScriptVite 8local

build.rollupOptions.output.manualChunks throws validation error under rolldown-vite

Problem

Using `build.rollupOptions.output.manualChunks` (either the object or function form) in a Vite config that uses rolldown-vite fails the build with a config validation error. The same config works fine under classic Vite/Rollup.

Solution

typescript

`manualChunks` is intentionally unsupported by rolldown and will not be implemented (closed as wontfix). Replace it with `advancedChunks`:
```js
export default {
  build: {
    rollupOptions: {
      output: {
        advancedChunks: {
          groups: [{ name: 'vendor', test: /\/react(?:-dom)\// }]
        }
      }
    }
  }
}
```
`test` takes a regex matched against the module id, and `groups` replaces the manualChunks map/function. Note `rollupOptions` still works for migration but is deprecated in favor of `rolldownOptions` going forward. Note: on vite@8.1.3+, advancedChunks emits a deprecation warning pointing at the newer codeSplitting option; advancedChunks still works but prefer codeSplitting going forward.