Node 7 async await syntax error

[TonyWuLihu]

I'm trying to use the j2v8 on my Mac which installed node v7.10 , I use below js code in a file:
/**

• Created by tonymac on 2018/1/18.
  */
  'use strict';
  const puppeteer = require('puppeteer');

(async () => {
const browser = await puppeteer.launch({args: ['--no-sandbox', '--disable-setuid-sandbox']});
const page = await browser.newPage();
await page.emulateMedia('print');
await page.goto('https://dev.capitalpreferences.com/dashboard/setup/signin', {waitUntil: 'networkidle2'});
await page.waitFor(10000);
await page.pdf({path: 'demo.pdf',printBackground: true});
await browser.close();
})();

Error throw
node.js:376
callback();
^
/Volumes/PDrive/Projects/capital_preferences_api/pdfreport.js:7: SyntaxError: Unexpected token (

Any ideas ?

[TonyWuLihu]

But I can execute the script by node js in command line

[TonyWuLihu]

Or should I ask whether J2V8 support the new feature of async/await ???

[prakapenka]

nodeJS = NodeJS.createNodeJS();
String version = nodeJS.getNodeVersion();

... and check returned version is supports async/await...
(means returned version can be different from version you have on your host machine)

[TonyWuLihu]

@prakapenka Thanks! Indeed, they are different version. The V8 version with J2V8 is 4.6 while I check the V8 version on my terminal of macos, It's 5.5

[TonyWuLihu]

How to solve this ? compile the J2V8 by myself ? Where could I find the guide for custom cross compile the versions ?

[pboymt]

我就用中文说了，J2V8的v8引擎版本是5.4，到5.5才支持async/await语法，然而现在v8的官方版本已经到6.9了，支持到ES2018了，我现在只能说自己动手丰衣足食……

[irbull]

Closing this as a duplicate of #433. That is the bug we are using to track updating to a newer V8.