Kidding - but we had exactly the same problem, except with a React app rather than an Angular one just before Christmas.
No joke on with this statement though: every time we have a time-consuming build issue to deal with it comes down to some npm dependency problem. Honestly, if there were a way we could realistically ditch npm (NO! YARN IS NOT ANY BETTER - to preempt that suggestion - it's simply an npm-a-like) I'd happily do so but sadly there isn't.
Kidding - but we had exactly the same problem, except with a React app rather than an Angular one just before Christmas.
No joke on with this statement though: every time we have a time-consuming build issue to deal with it comes down to some npm dependency problem. Honestly, if there were a way we could realistically ditch npm (NO! YARN IS NOT ANY BETTER - to preempt that suggestion - it's simply an npm-a-like) I'd happily do so but sadly there isn't.