this is a simple boilerplate to run GraphQL project as a cloud code on back4app. It is set-up to use typescript which also enables ES6 syntax (while it's transpiled to ES5 supported by back4app node)

minimum config required to set up GraphQL is as simple as:

provide a package.json located in cloud

{
  "dependencies": {
    "graphql": "0.13.1",
    "graphql-tools": "^3.0.1",
    "apollo-server-express": "1.3.6",
   }
}

and app.js also in cloud:

var fs = require("fs");
var path = require("path");

var apollo_server_express = require("apollo-server-express");
var graphql_tools = require("graphql-tools");
var bodyParser = require("body-parser");
var cors = require("cors");
var resolvers = {
    Query: {
        hello() { return "Hello world!"; }
    }
};

var schema = graphql_tools.makeExecutableSchema({
    typeDefs: fs.readFileSync(path.join(__dirname, './graphql/schema.graphql'), 'utf8'),
    resolvers: resolvers
});

app.use('/graphql', cors(), bodyParser.json(), apollo_server_express.graphqlExpress({ schema: schema }));
app.use('/graphiql', apollo_server_express.graphiqlExpress({
    // subscriptionsEndpoint: 'ws://seaas-test.back4app.io:80/subscriptions',
    endpointURL: '/graphql'
}));

together with schema.graphql in cloud/graphql/

schema {
    query: Query
}

type Query {
    hello: String!
}

these three files should be enough to have GraphQL set up.

To have make use of this boilerplate quickly you can run npm i, npm run build and then upload build/cloud folder using Dashboard -> Server Settings -> Cloud Code panel.

To make the process automated we may follow the https://docs.back4app.com/docs/integrations/command-line-interface/creating-a-parse-app/ with one important remark - as we need to deploy cloud code from build folder - we need to copy generated .parse.local and .parse.project to build folder so the npm run deploy can upload just the generated code to your app.