npm install @apollo/server @nestjs/apollo @nestjs/graphql graphql ts-morph

: This package is part of the Apollo GraphQL ecosystem and provides a GraphQL server implementation. It allows you to create a GraphQL server using Node.js, enabling you to define your GraphQL schema, and resolvers, and handle incoming GraphQL queries and mutations.

: This package is an integration package provided by the NestJS framework. It allows you to use Apollo Server seamlessly within a NestJS application. NestJS is a powerful Node.js framework that provides a modular and structured approach to building scalable and maintainable server-side applications.

: This package is another part of the NestJS ecosystem and provides GraphQL support for NestJS applications. It allows you to define GraphQL schemas, and resolvers, and use decorators to annotate your classes and methods to create GraphQL endpoints. It works in conjunction with @apollo/server or other GraphQL server implementations.

: This package is the core GraphQL library that provides the fundamental building blocks for working with GraphQL. It includes utilities for parsing, validating, and executing GraphQL queries and mutations. It is a widely used package in the GraphQL community and is required by most GraphQL server implementations.

: This package is a TypeScript AST (Abstract Syntax Tree) manipulation library. It allows you to programmatically analyze, modify, and generate TypeScript code. It can be particularly useful when working with code generation or refactoring tools, such as generating TypeScript types from GraphQL schemas or modifying existing TypeScript files programmatically.

In summary, the packages we mentioned are commonly used in the context of building GraphQL servers with NestJS and Apollo. They provide the necessary tools and integrations to define GraphQL schemas, handle incoming queries and mutations, and manipulate TypeScript code when needed.

GraphQLModule.forRoot<ApolloDriverConfig>({
      driver: ApolloDriver,
      typePaths: ['./**/*.graphql'],
      definitions: {
        path: join(process.cwd(), 'src/graphql.ts'),
        outputAs: 'class',
      },
    }),

 directory. This file defines the GraphQL schema, outlining the types, queries, mutations, and subscriptions for song-related operations, serving as a blueprint for the GraphQL API structure. It is considered good practice to maintain schema files within their respective domain folders to encapsulate and modularize the API definitions, facilitating better maintainability and scalability of the application's GraphQL architecture.

type Song {
  id: ID!
  title: String!
}

type Query {
  songs: [Song!]!
}

---
title: GraphQL Server Setup
privateVideoUrl: https://fullstack.wistia.com/medias/yafzqj3fg6
isPublicLesson: true
---

### Step 1: Install Dependencies

```bash
npm install @apollo/server @nestjs/apollo @nestjs/graphql graphql ts-morph
```

`@apollo/server`: This package is part of the Apollo GraphQL ecosystem and provides a GraphQL server implementation. It allows you to create a GraphQL server using Node.js, enabling you to define your GraphQL schema, and resolvers, and handle incoming GraphQL queries and mutations.

`@nestjs/apollo`: This package is an integration package provided by the NestJS framework. It allows you to use Apollo Server seamlessly within a NestJS application. NestJS is a powerful Node.js framework that provides a modular and structured approach to building scalable and maintainable server-side applications.

`@nestjs/graphql`: This package is another part of the NestJS ecosystem and provides GraphQL support for NestJS applications. It allows you to define GraphQL schemas, and resolvers, and use decorators to annotate your classes and methods to create GraphQL endpoints. It works in conjunction with @apollo/server or other GraphQL server implementations.

`graphql`: This package is the core GraphQL library that provides the fundamental building blocks for working with GraphQL. It includes utilities for parsing, validating, and executing GraphQL queries and mutations. It is a widely used package in the GraphQL community and is required by most GraphQL server implementations.

`ts-morph`: This package is a TypeScript AST (Abstract Syntax Tree) manipulation library. It allows you to programmatically analyze, modify, and generate TypeScript code. It can be particularly useful when working with code generation or refactoring tools, such as generating TypeScript types from GraphQL schemas or modifying existing TypeScript files programmatically.

In summary, the packages we mentioned are commonly used in the context of building GraphQL servers with NestJS and Apollo. They provide the necessary tools and integrations to define GraphQL schemas, handle incoming queries and mutations, and manipulate TypeScript code when needed.

### Step 2: Import GraphQL Module

```ts
GraphQLModule.forRoot<ApolloDriverConfig>({
      driver: ApolloDriver,
      typePaths: ['./**/*.graphql'],
      definitions: {
        path: join(process.cwd(), 'src/graphql.ts'),
        outputAs: 'class',
      },
    }),
```

### Step 3: Create a Schema File

A schema file named `song.graphql` must be created within the `songs` directory. This file defines the GraphQL schema, outlining the types, queries, mutations, and subscriptions for song-related operations, serving as a blueprint for the GraphQL API structure. It is considered good practice to maintain schema files within their respective domain folders to encapsulate and modularize the API definitions, facilitating better maintainability and scalability of the application's GraphQL architecture.

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The newline Guide to Building Your First GraphQL Server with Node and TypeScript

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Amelia Wattenberger

Author of Fullstack D3

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