\node_modules\koa-bodyparser\index.js:72
  return async function bodyParser(ctx, next) {
               ^^^^^^^^
SyntaxError: Unexpected token function
    at createScript (vm.js:56:10)
    at Object.runInThisContext (vm.js:97:10)
    at Module._compile (module.js:542:28)
    at Module._extensions..js (module.js:579:10)
    at Object.require.extensions.(anonymous function) [as .js] (C:\Users\gianluca.paris\Desktop\a\together\node_modules\babel-register\lib\node.js:152:7)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
[nodemon] app crashed - waiting for file changes before starting...

import Koa from 'koa';
import mongoose from 'mongoose';
import logger from 'koa-logger';
import parser from 'koa-bodyparser';
import router from 'koa-router';

const api = router();
const app = new Koa();

app.use(logger()) // Logs information.
  .use(parser()) // Parses json body requests.
  .use(async (ctx, next) => ctx.body = 'Hello World')
  .use(router.routes())
  .use(router.allowedMethods());

api.get('/', async (ctx, next) =>
  ctx.body = 'Get api'
);

app.listen(3000, () => console.log('Listening on port 3000.'));

export default app;