const gdc = require('node-geometry-dash')
const GD = new gdc({username: "...", password: "..."})
var express = require('express')
var app = express()

app.get('/', function (req, res) {
  GD.levels("Bloodbath").then( levels => { res.send(levels[0]) });
  res.send('Hello World!')
})

app.listen(3000, function () {
  console.log('Example app listening on port 3000!')
})

GD.levels("Bloodbath").then( levels => { res.send(levels[0]) });
                                   ^
SyntaxError: Unexpected token >
    at Module._compile (module.js:439:25)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:902:3