server.ts

const MONGO_PORT = 27017;
const MONGO_URL = "localhost";
const dbName = "graphExample";

// help to debug mongoose
mongoose.set("debug", true);

mongoose.connect(`mongodb://${MONGO_URL}:${MONGO_PORT}/${dbName}`);

const app = express();

const schema: GraphQLSchema = mergeSchemas({
	schemas,
	resolvers
});

// GraphQL
const server = new ApolloServer({
	schema,
	context: async (req: any) => {
		// If we want to put some restriction
	}
});

server.listen().then(({ url }) => {
	console.log(`🚀 Server ready at ${url}`);
});