Error in async, in Koa? - node.js

Question

I want to implement an API with POST method, But when i am starting my server then Error occured:
3450:~/Desktop/koa/ctx$ node koa2.js
/home/358/Desktop/koa/ctx/koa2.js:9
router.post('/locations', async (ctx, next) =>{
^
SyntaxError: Unexpected token (
at Object.exports.runInThisContext (vm.js:76:16)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:509:3
358#daffolap358-Latitude-3450:~/Desktop/koa/ctx$
Can anyone tell me where I am doing wrong ?
My code is :
server.js:
var Koa =require('koa');
var middleware =require('koa-router');
var logger =require('koa-logger');
var parser =require('koa-bodyparser');
const router = middleware();
const app = new Koa();
router.post('/locations', async (ctx, next) =>{
console.log("ctx");
});
app
.use(logger()) // Logs information.
.use(parser()) // Parses json body requests.
.use(router.routes()) // Assigns routes.
.use(router.allowedMethods())
app.listen(5050, () => console.log('Listening on port 5050.'));
export default app;

Answer 1

You are getting this error because your node version is less than 7.6.0.
It should be greater than 7.6 also Async/await support in Node 7.6 comes from updating V8, Chromium’s JavaScript engine, to version 5.5.

Answer 2

Check your Node version. It should be >= 7.6.0. Otherwise koa-2 and async-await pattern will not work.