Ionic-angular@3.9 + Capacitor@4 possible?

Ionic Framework ionic-v3
1

Hi,

We have an old ionic app running ionic-angular@3.9.2 and angular@5.2 with cordova. But we’re not able to build this app anymore due cordova issue. I’ve managed to remove cordova and use capacitor quite easily, we’re not using a lot of native plugins.

The app runs well in dev mode (ionic-app-scripts serve), I can build it with ionic-app-scripts build --prod without any issue but when I try to start the build project with http-server I get the following error with a blank screen :

Uncaught Error: Cannot find module "."
    at vendor.js:1:911940
    at vendor.js:1:912010
    at Object.<anonymous> (vendor.js:1:912161)
    at e (vendor.js:1:101)
    at 257 (main.js:1:160562)
    at e (vendor.js:1:101)
    at window.webpackJsonp (vendor.js:1:416)
    at main.js:1:1

It works without the --prod flag but I guess it’s not optimised.

Is there a way to make the app runs in production without having to migrate to ionic@6?

Thanks