Merge GraphQL Schemas has been deprecated and merged into GraphQL Tools, so it will no longer get updates. Use GraphQL Tools instead to stay up-to-date! Check out https://www.graphql-tools.com/docs/migration-from-merge-graphql-schemas for migration and https://the-guild.dev/blog/graphql-tools-v6 for new changes.
Urigo/merge-graphql-schemas
A utility library to facilitate merging of modularized GraphQL schemas and resolver objects.