Sort out union subtyping
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Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 30/100
- Issue type
- Refactor
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- graphql, scala
- Domain
- backend-api-design
Research direction
Start by tracing the union case definition for <: and the fragmentApplies entry point, then identify which current subtype semantics those uses rely on. The issue is complete when the intended union subtype relation and the separate fragment-applicability relation are agreed and consistently represented.
Written by the indexing model from the issue text.
Description
Currently the definition of the case(s) for unions in <:< don't implement a particularly sane subtype relation. Nonetheless the current semantics are relied on, eg. in fragmentApplies. Probably unions should only relate as subtypes to other unions and we should introduce a separate relation for fragment applicability.
- Dominant language
- Scala
- Stars
- 189
- Forks
- 32
- Avg merge
- 18h 27m
- Merged PRs (30d)
- 21
Getting set up
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First steps
- Read the whole issue, then the project's contributing guide.
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- Open a pull request that references the issue number.
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