Support for bigint in ID

[vwkd]

It's desirable to represent an ID on the server as a bigint instead of a number.

Currently, the ID scalar type supports serializing number to string, but not bigint.

I'd like to see support for serialization of bigint to string similar to number.

I think it would require changing this code

graphql-js/src/type/scalars.ts

Lines 225 to 227 in d766c8e

	if (Number.isInteger(coercedValue)) {
	return String(coercedValue);
	}

to

if (Number.isInteger(coercedValue) || typeof coercedValue == "bigint") { 
  return String(coercedValue); 
}