Exposing toCursor and fromCursor

[intellix]

I'm currently creating a leaderboard of users based on a field that I order by: points. I can get a user's rank by exposing an index field for the rank:

edgeFields: {
  index: {
    type: GraphQLInt,
    resolve: edge => (new Buffer(edge.cursor, 'base64')).toString('ascii').split('$').pop(),
  },
},

Now, I can create a leaderboard or top 10 of points by creating a query like so:

Query:

{
  users(last: 10, orderBy: POINTS) {
    edges {
      index
      node {
        name
        points
      }
    }
  }
}

Result:

{
  "data": {
    "users": {
      "edges": [
        {
          "index": 0,
          "node": {
            "name": "Bob"
            "points": 100
          }
        },
        {
          "index": 1,
          "node": {
            "name": "Bill",
            "points": 90
          }
        },
        ...
      ]
    }
  }
}

Right now I'm duplicating the work of fromCursor to get ahold of the index. It'd be cool to expose those 2 methods: https://github.com/mickhansen/graphql-sequelize/blob/master/src/relay.js#L168 https://github.com/mickhansen/graphql-sequelize/blob/master/src/relay.js#L178

[mickhansen]

Another solution might be to add index to the edge here: https://github.com/mickhansen/graphql-sequelize/blob/master/src/relay.js#L210

[stale[bot]]

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