A flat module cache says 24 MiB of source is resident before the first request, but not
what pulled any of it in. Recording parent -> child as the CommonJS loader resolves it
answers that, and the answer redirects the remaining 'ship less server JS' work:
- Next loads all 74 app route bundles at startup, not lazily.
- One 16.10 MiB / 460-file subtree is reached by the tRPC/API routes AND by
instrumentation, so instrumentation's exclusive cost is 0 bytes - deferring it would
free nothing, because Next preloads /api/[...trpc] anyway.
- Only 1.10 MiB is common to every route, so this is the API surface pulling in every
integration, not a universal barrel.
Thomas Camlong
4766653979