I am creating an app using Splunk Web splunk app. I need to install a third party library from npm package  manager by npm install command.   
Where and how I can install the package? 
 To be specific, I want to install puppeteer package and use it in my js file. 
 https://www.npmjs.com/package/puppeteer 
 here is my code: 
  const puppeteer = require('puppeteer');
(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  // Get the "viewport" of the page, as reported by the page.
  const dimensions = await page.evaluate(() => {
    return {
      width: document.documentElement.clientWidth,
      height: document.documentElement.clientHeight,
      deviceScaleFactor: window.devicePixelRatio
    };
  });
  console.log('Dimensions:', dimensions);
  await browser.close();
})();
  
						
					
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