express-graphql, request-promise, graphql-tools, resolvers

index.ts

import * as express from 'express';
import * as request from 'request-promise';
import * as graphqlHTTP from 'express-graphql';
import { makeExecutableSchema } from 'graphql-tools';

const typeDefs = `
type V2 {
  origin: String
  title: String
}
type Query {
  getV2(id: String!, apiKey: String!): V2
}
schema {
  query: Query
}`

const resolvers = {
  V2: {
    origin(json) { return json["origin"]; },
    title(json) { return json["title"]; }
  },
  Query: {
    getV2: async (root, { id, apiKey }) => { return root.get(id, apiKey); }
  }
}

const schema = makeExecutableSchema({ typeDefs, resolvers });

const root = { 
  get: async (id, apiKey) => {
    const body = await request.get(`http://api.newsapi.com.au/content/v2/${ id }?api_key=${ apiKey }`)
    
    return JSON.parse(body);
  }
};

const app = express();

app.use('/graphql', graphqlHTTP(async (req, res, params) => ({
  schema: schema,
  rootValue: root,
  graphiql: true
})));

app.listen(4000, () => console.log('Now browse to localhost:4000/graphql'));