adding a field when using delegateToSchema

[brandonFaf]

Hello,

I've been playing around with using delegateToSchema to forward a query to another schema. I want to add a transform to add fields that the user may not ask for, but are needed to map to other values being queried. I followed this example to create a custom transform and use the transformRequest method to see if the required field is being queried and if not, add it in. Based off some logging that i added, i can see that the field is being added, and i can use the transformResult method to see that the data is being returned for the added field. However, in my resolver, when i look at the returned data from delegateToSchema i don't see the added field.
Can anyone help me understand why i can see the added field in the data in transformResult but not in the result of the delegateToSchema I replicated the problem i'm having in this repo and also included the relevant code below . I didn't make an issue cause i feel like this is likely user error on my part rather than a bug.

const result = await delegateToSchema({
      schema: wrapSchema({
        schema,
        transforms: [new AddFieldToDelegatedRequest(schema, 'Country', 'code')],
        executor,
      }),
      operation: OperationTypeNode.QUERY,
      fieldName: 'countries',
      args: {},
      context,
      info,
    });

    console.log('result:', result[0]); //result: [Object: null prototype] { name: 'Andorra' } * missing 'code' *

export class AddFieldToDelegatedRequest implements Transform {
  schema;
  fieldName;
  typeName;
  constructor(schema, typeName, fieldName) {
    this.schema = schema;
    this.fieldName = fieldName;
    this.typeName = typeName;
  }
  transformRequest(originalRequest) {
    const typeInfo = new TypeInfo(this.schema);
    const doc = visit(
      originalRequest.document,
      visitWithTypeInfo(typeInfo, {
        [Kind.SELECTION_SET]: (node) => {
          const parentType = typeInfo.getParentType();
          if (parentType && parentType.name === this.typeName) {
            const selections = [...node.selections];
            // IF the field name is missing for the typename, add it
            if (
              !selections.find(
                (s: FieldNode) => s.name.value === this.fieldName,
              )
            ) {
              selections.push({
                kind: Kind.FIELD,
                name: { kind: Kind.NAME, value: this.fieldName },
              });
              console.log('added field');
            }
            return { ...node, selections };
          }
          return node;
        },
      }),
    );
    return { ...originalRequest, document: doc };
  }
  transformResult(originalResult) {
    console.log(
      'originalResult',
      JSON.stringify(originalResult.data.countries[0], null, 2),
    );
    return originalResult;
  }
}

[brandonFaf]

As i suspected this was user error. After debugging soooooooo much code. I couldn't really figure out what was going on. While looking through docs i realized i could pass transforms as an option to delegateToSchema so i moved my transform out of the wrapSchema and added it to the delegateToSchema and everything worked. I'll update the repo i included in the original post.