@roots/bud-build/lib/config/experiments.js

bud.js core module

export const experiments = async ({ hooks, isDevelopment, }) => hooks.filter(`build.experiments`, {
    backCompat: false,
    cacheUnaffected: true,
    lazyCompilation: isDevelopment
        ? { entries: false, imports: true }
        : false,
    topLevelAwait: true,
});