Emit separate chunks for each component

[Bilge]

How can I configure webpack to emit separate chunks for each Svelte 5 component? It seems Vite accomplishes this with very little persuasion, but in my multi-page application, all I have is one output for each entrypoint and I cannot convince webpack to split out the components, even with a custom splitChunks plugin configuration, such as the following.

cacheGroups: {
    svelte: {
        test(module) {
            return module.resource && module.resource.endsWith('.svelte');
        },
    },
},