Hey @CosmicPangolin1
I just merged the PR which supports Int64 as a scalar type in GraphQL. Note that:
Int64 can currently represent values in range [-(2^53)+1, (2^53)-1] without any error.
Values out of this range but representable by a signed 64-bit integer, may get coercion error.
It is now available in master and would be part of release v20.11