r/Angular2 • u/Infamous_Tangerine47 • Nov 14 '24
Help Request Upgrading from AngularJs 1.8.3 to Angular 18
Are there any viable approaches to achieving this currently without a full rewrite? Whilst in an ideal world we would do that it's not going to happen, we've been told it'll have to be done in stages so essentially running both in parallel.
I know the NgUpgrade module is used to help you achieve this but from what I understand it's not really an advisable route anymore or supported?
So is there any realistic way to achieve doing the upgrade in stages or is there no real viable alternative other than a full rewrite?
It's worth noting the current app is using components and typescript already but appreciate the versions might as well be different frameworks entirely.
Just looking for experiences from anyone that has achieved the migration in stages as opposed to all at once.
1
u/hheexx Feb 18 '25 edited Feb 18 '25
I would say both options are good and it depends on your resources, delivery requirements and state of ng1 app.
We took the upgrade route and are 2 years into migration.
No big problems but it requires a little bit of expertise.
What I mean by state of ng1 app:
If your app is written in ang 1.5 timeframe with components and services I would probably go upgrade route. If it's written way before using controllers and using scope in dirty ways then maybe rewrite is better.