

Here you can find the URL of the Lesson1: How to build GraphQL API tutorial: In the previous lesson, we were building a simple GraphQL API with Expres.js. Welcome to the second lesson of the Express.js course, where we’ll focus on the Apollo & WebSockets tutorial for beginners.

Create createExpense function in resolvers.ts.What is GraphQL Subscription and how to add subscription to the schema.What is GraphQL mutation and how to add mutation to the schema.Replace buildSchema with gql in the schema.ts.

