Fix infinite loop on invalid queries in OverlappingFields #1111
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`OverlappingFieldsCanBeMerged` would infinite loop when passed something like
```graphql
fragment A on User {
name
...A
}
```
It's not `OverlappingFieldsCanBeMerged`'s responsibility to detect that validation error, but we still would ideally avoid infinite looping.
This detects that case, and pretends that the infinite spread wasn't there for the purposes of this validation step.
Also, by memoizing and checking for self-references this removes duplicate reports.
Closes #780
45 tasks
This was referenced Apr 24, 2021
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OverlappingFieldsCanBeMergedwould infinite loop when passed something likeIt's not
OverlappingFieldsCanBeMerged's responsibility to detect that validation error, but we still would ideally avoid infinite looping.This detects that case, and pretends that the infinite spread wasn't there for the purposes of this validation step.
Also, by memoizing and checking for self-references this removes duplicate reports.
Closes #780