const puppeteer = require('puppeteer');


(async () =>
{
    const browser = await puppeteer.launch({ headless: false });

    const page = await browser.newPage();
    await page.setViewport({ width: 1366, height: 768});

    await page.goto('https://www.google.co.in', {waitUntil: 'networkidle2'});

})();

global.RunCommand = function(param)
{
    const browser = await puppeteer.launch({ headless: false });

    const page = await browser.newPage();
    await page.setViewport({ width: 1366, height: 768});

    await page.goto('https://www.google.co.in', {waitUntil: 'networkidle2'});


    return 'Done : ' + param;
}

const browser = await puppeteer.launch({ headless: false });
                    ^^^^^^^^^

SyntaxError: Unexpected identifier
at createScript (vm.js:80:10)
at Object.runInThisContext (vm.js:139:10)
at Module._compile (module.js:606:28)
at Object.Module._extensions..js (module.js:653:10)
at Module.load (module.js:561:32)
at tryModuleLoad (module.js:504:12)
at Function.Module._load (module.js:496:3)