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docs: add experimentalMinChunkSize to migration guide #21892

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0b9d19d
docs: add experimentalMinChunkSize to migration guide
o-m12a Mar 16, 2026
9a44f38
docs: clarify that codeSplitting.minSize requires groups
o-m12a Mar 20, 2026
122ad81
docs: state no direct equivalent for experimentalMinChunkSize
o-m12a Mar 20, 2026
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4 changes: 4 additions & 0 deletions docs/guide/migration.md
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Expand Up @@ -302,6 +302,10 @@ The `build.rollupOptions.watch.chokidar` option was removed. Please migrate to t

The object form `output.manualChunks` option is not supported anymore. The function form `output.manualChunks` is deprecated. Rolldown has the more flexible [`codeSplitting`](https://rolldown.rs/reference/OutputOptions.codeSplitting) option. See Rolldown's docs for more details about `codeSplitting`: [Manual Code Splitting - Rolldown](https://rolldown.rs/in-depth/manual-code-splitting).

### Removed `build.rollupOptions.output.experimentalMinChunkSize` option

The `build.rollupOptions.output.experimentalMinChunkSize` option was removed as there is no direct equivalent in Rolldown. See the [`codeSplitting`](https://rolldown.rs/reference/OutputOptions.codeSplitting) option for Rolldown's approach to controlling chunk splitting.

### `build()` Throws `BundleError`

_This change only affects JS API users._
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