This is an issue to track the progress of stricter parseValue coercion for built-in scalars.
Background
We initially made parseValue coercion stricter for built-in scalars to align with the JS reference implementation, and these changes were included in the v20.0 release. https://github.com/graphql-java/graphql-java/releases/tag/v20.0
Since then we've received reports that this breaking change is challenging. Although it's in line with the JS implementation, this change can potentially break clients. The plan is to provide a better migration pathway.
Progress log