Apollo-Server

As explained here, an Apollo Server is an open-source, spec-compliant GraphQL server that's compatible with any GraphQL client, including Apollo Client. It's the best way to build a production-ready, self-documenting GraphQL API that can use data from any source.

Table of Contents:

• Creating a project
• Install dependencies
• Defining a schema

Creating a Project:

Initialize a node js project using npm init --yes && npm pkg set type="module"

Install Dependencies:

Applications that run Apollo Server require two top-level dependencies:

1. graphql
2. @apollo/server

Run the following command to install them:

npm i graphql @apollo/server

Defining a Schema

• Create a file named index.js in the root of your project folder
• Paste the following code:

import { ApolloServer } from "@apollo/server";
import { startStandaloneServer } from '@apollo/server/standalone'

const typeDefs = `#graphql
    type Book {
        title: String
        author: String
    }

    type Query {
        books: [Book]
    }
`

const books = [
    {
        title: "The Awekaning",
        author: "Kate Chopin"
    },
    {
        title: "City of Glass",
        author: "Paul Auster"
    }
]

const resolvers = {
    Query: {
        books: () => books
    }
}

const server = new ApolloServer({
    typeDefs,
    resolvers
})

const { url } = await startStandaloneServer(server, {
    listen : { port: 4000 },
});

console.log(`🚀  Server ready at: ${url}`);

Note Add this to the Scripts of your package.json file:

"start": "node index.js"

Then run your server with:

npm start

Execute your query by visiting the url