graphql-middleware with custom directives, breaks directives

Hi There,

Prior to using graphql-middleware when initializing our apollo server I was simply passing our schema and typeDefs directly to the apollo server upon instantiation.

// instantiate apollo server
this._gServer = new ApolloServer({
      typeDefs: GraphqlTypeDefs.getTypeDefs(),
      resolvers: GraphqlResolvers.getMap(),
      schemaDirectives: {
        directive1: Directive1, 
        ...
      }
     ...
    });

However I am using the makeExecutableSchema and applyMiddleware functions as prescribed, and while the middleware itself is being executed as expected, our custom schema directives are no longer being executed. The code I'm using to initialize the server is as follows:

// make an executable schema
const schema: GraphQLSchema = makeExecutableSchema({
      typeDefs: GraphqlTypeDefs.getTypeDefs(),
      resolvers: GraphqlResolvers.getMap()
    });

// apply middlewares to the schema
const schemaWithMiddleware: GraphQLSchemaWithFragmentReplacements =
      applyMiddleware(schema, GraphqlPrePostApiEndpointMiddleware.execute);

// instantiate apollo server
this._gServer = new ApolloServer({
      schema: schemaWithMiddleware, // not working with directives
      schemaDirectives: {
        directive1: Directive1, 
        ...
      }
     ...
    });

Can advise how I might get directives working with graphql-middleware?

maticzav / graphql-middleware

graphql-middleware with custom directives, breaks directives #563