Transform federation generates incorrect schema

[georgeberar]

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• [ ] 2. A failing test has been provided
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Describe the bug

I'm trying to build the subgraph based on a gRPC source but the generated GraphQL schema seems to be invalid and contains 'unknown directives'.

To Reproduce Steps to reproduce the behavior:

I have a simple gRPC message defined as:

message Transaction {
  string id = 1;
  string accountId = 2;
  string amount = 3;
  string createdAt = 4;

}

other proto files (e.g. service) are omitted for brevity

My .meshrc.yml looks like this:

sources:
  - name: transaction-service
    handler:
      grpc:
        endpoint: ${BACKEND_SERVICE_HOST}
        useHTTPS: ${USE_HTTPS}
        source:
          file: ./proto/transaction_service.proto
          load:
            defaults: true
            includeDirs:
              - ./proto
    transforms:
      - federation:
          types:
            - name: Transaction
              config:
                key:
                  - fields: id

When running mesh build it generates:

schema @link(url: "https://specs.apollo.dev/federation/v2.0", import: []) {
  query: Query
  mutation: Mutation
}

// omitted for brevity

type Transaction @key(fields: "id") {
  id: String
  type: TransactionTypeGrpc
  accountId: String
  amount: String
  createdAt: String
}

but the @link and @key directives are marked as unknown. They are missing from the import as well. Pushing this schema to Hive results in an error due to unknown directive @link.

I found another issue similar to this here but I'm using the default 2.0 federation version.

Expected behavior

The generated schema is valid.

Environment:

• OS: Mac & Linux

•   "@graphql-mesh/cli": "0.88.5",
    "@graphql-mesh/grpc": "0.97.3",
    "@graphql-mesh/transform-federation": "^0.96.3"
  

• NodeJS: v18.19.0

Additional context