confilct with graphql v 15 in ./node_modules/graphql and v 14 in ./node_modules/apollo-language-server/node_modules/graphql

our package.json has dependency for

"graphql": "^15.5.0"
"apollo": "*"

which installs in version 14.7.0 in ./node_modules/apollo-language-server/node_modules/graphql
and version 15.5.2 in ./node_modules/graphql

cousing conflict when using npx apollo codegen:generate

"Cannot use GraphQLScalarType "ID" from another module or realm."

deleting ./node_modules/apollo-language-server/node_modules/graphql folder fixes the issue

I am wondering why is there different version when graphql is already installed in node_modules/graphql

Start by reproducing the conflict with `npx apollo codegen:generate` using the versions in package.json, then inspect `node_modules/graphql` and `node_modules/apollo-language-server/node_modules/graphql`. Done means the command no longer raises the cross-realm `GraphQLScalarType "ID"` error while preserving the reported dependencies.

Written by the indexing model from the issue text.