Clarify about bundle size of RsdoctorRspackPlugin

[flix-rr]

I'm confused about how repack handle downloading bundle (I'm using @module-federation/runtime with pure runtime strategy)

I just run RSDOCTOR=true npx react-native bundle on HostApp and auth. and here's the result

HostApp

auth:

I'm confusing when the HostApp downloading the bundle, which one repack used to download? the Total Files 7.20MB? Total JS 2.03MB? or Initial JS 315.60KB?

I've concern in case repack would download the Total JS since it mean when I have 10 miniApp, the total downloading would be 20MB.

Could someone enlighten me?

friendly ping @jbroma @dannyhw

[CasperKristiansson]

None of those three is the exact amount the host downloads. Rsdoctor is describing the auth build artifacts:

• Total Files: every emitted asset
• Total JS: every emitted JavaScript file, including async chunks
• Initial JS: JavaScript attached to that build's initial chunks

With pure-runtime Module Federation, loadRemote('auth/...') fetches the manifest or remote entry plus the chunks needed by the requested expose. Other async chunks are fetched only if they are imported; preloadRemote can deliberately fetch more. So ten mini-apps do not automatically mean ten times Total JS.

For the real first-load cost, clear the app cache, load one remote, and inspect the actual requests to that remote. Initial JS is a useful build signal, but it is not the transfer total.

[flix-rr]

Thank you for detail explanations @CasperKristiansson 😄 , But I've tried what you've suggest here:

For the real first-load cost, clear the app cache, load one remote, and inspect the actual requests to that remote. Initial JS is a useful build signal, but it is not the transfer total.

on debug mode, I only see mf-manifest.json on react native debugger network inspection.
if I create a release mode, I can't see the network logger.

do you have any recommendation about how do i replicate the chunk download tracker?

---

Actually I still have something to ask,
should I using ScriptManager.shared.addResolver if I use full mf-runtime or maybe import { loadRemote, registerRemotes } from '@module-federation/runtime' is enough?