npm packages sweetalert2 (TS syntax error) and source-map (not found) build errors

[radrad]

I can report 2 javascript or npm annoing errors when building the solution:
I upgraded the solution projects to 5.2.0. I use VS 2022

This is how I update the solution:
abp update -v 5.2.0
and
abp install-libs

What am I supposed to do? How does abp.io framework build .ts files?
Should I have typescript installed globally? Is gulp.js needed and to run it? Is npm install needed.

1. sweetalert2
Error TS1144 (TS) '{' or ';' expected. EventHub.Web JavaScript Content Files E:\Volosoft\apps\eventhub\src\EventHub.Web\node_modules\sweetalert2\sweetalert2.d.ts

2. source-map not found
Error TS6053 File 'E:/Volosoft/apps/eventhub/src/EventHub.Web/node_modules/source-map/source-map' not found.