Use graphql endpoint for stargazers

[ericboucher]

The GitHub REST API makes it impossible to traverse the stargazers endpoint for large repos and limits how many pages we can query.

For example, querying https://api.github.com/repositories/10270250/stargazers?page=500&per_page=100 will result in the following error:

{
    "message": "In order to keep the API fast for everyone, pagination is limited for this resource. Check the rel=last link relation in the Link response header to see how far back you can traverse.",
    "documentation_url": "https://docs.github.com/v3/#pagination"
}

And contrary to what the message suggests, querying the "last" link still gives an error...

To make things worse, the API does NOT allow any of the following params for this endpoint:

• "since"
• "sort"

A solution is to paginate through a Graphql version instead:

query { 
  repository(name: "react" owner: "facebook") { 
    stargazers(first: 100 orderBy: {field: STARRED_AT direction: DESC}) {
      edges {
        node {
          id
          login
        }
        starredAt
      }
    }
  }
}