Upgrade with confidence – dealing with issues while upgrading libraries
summary
Project uses Angular + GraphQL with apollo-client v2 and upgrading breaks because v2 removes observable variables; documentation omits that. Fixes trialed: merge variable observables with combineLatest + switchMap and call watchQuery repeatedly (works but recreates queries), then create a persistent queryRef and call queryRef.setVariables to trigger results, and finally implement an Apollo Link middleware that intercepts operations, flattens observable vars into plain objects and forwards them. Result: solution works mostly but required wrapping variables in the operation context to avoid edge cases.
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chapters (6)
- 0:00Intro
- 1:43What's the story
- 2:54Let's upgrade
- 4:05Long story short
- 5:46First solution
- 7:45The ultimate goal
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