tools.bundlerChain

Type:

type BundlerChainFn = (
  chain: RspackChain,
  utils: ModifyBundlerChainUtils,
) => Promise<void> | void;

Default: undefined

You can modify the Rspack configuration by configuring tools.bundlerChain which is type of Function. The function receives two parameters, the first is the original bundler chain object, and the second is an object containing some utils.

What is BundlerChain

Bundler chain is a chainable configuration tool implemented based on the Rspack configuration API, which you can use to modify Rspack configuration.

Configurations modified via bundler chain will work on Rspack builds.

tools.bundlerChain is executed earlier than tools.rspack and thus will be overridden by changes in tools.rspack.

For more information, please refer to Rsbuild#tools.bundlerChain.