Our first job is to install Apollo into our project.

1. To add Apollo client to our project, let's install the following packages via npm:

npm install apollo-boost react-apollo graphql

• apollo-boost contains everything we need to set up our Apollo client
• react-apollo contains React components we are going to use to interact with the GraphQL server
• graphql is a core package that we'll use to parse GraphQL queries

2. We'll also install some TypeScript types as well for graphql:

npm install @types/graphql --save-dev

3. We need to make sure TypeScript includes the es2015 and esNext libraries when it compiles our code. So, let's add the following lib field to tsconfig.json:

{
  "compilerOptions": {
    "target": "es5",
    "lib": ["es2015", "dom", "esnext"],
    ...
  },
  ...
}

We now have everything in place to start interacting with the GitHub GraphQL server with Apollo.