Post History

new to node.js and puppeteer

Hey all:
Used to working with PhantomJS.  Want to upgrade to Puppeteer.  Started with some code:
```
"use strict";
const puppeteer = require("puppeteer");

const capture = async () => {
	let browser;
	try {
		console.time('myTimer');
		console.info("Opening browser ...");
		const browser = await puppeteer.launch({
			headless:true,'ignoreHTTPSErrors':true,devtools:false
		});
		const page = await browser.newPage();

		page.on('console', (msg) => console.log('DEBUG:', msg.text()) );
		console.info("browser instance created.");

		await page.evaluate(() => console.log(`URL="${location.href}".`));
		await page.goto("https://www.chunkbase.com/apps/seed-map");
	//	await page.goto("https://checkip.amazonaws.com/");
		await page.evaluate(() => console.log(`URL="${location.href}".`));

		console.info("getting webpage dimensions.");
		const getDimensions = await page.evaluate(() => {
			return {
				pxH: document.documentElement.clientHeight,
				pxW: document.documentElement.clientWidth,
				scale: window.devicePixelRatio
			};
		});
		console.info("Dimensions: ", getDimensions);

		console.info("capturing.");
		await page.screenshot({ path:"D:/screenshot.png", type:"png", fullPage:false });
		console.timeEnd('myTimer');
	} catch (err) {
		console.warn("Could not create a browser instance: ", err);
		return;
	} finally {
		await browser.close();
	}
};
capture();
```
**Output:**
```
Opening browser ...
browser instance created.
DEBUG: URL="about:blank".
DEBUG: [.WebGL-000022F60095A300]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels
DEBUG: fun-hooks: referenced 'adpod' but it was never created
DEBUG: %cVideoManagerComponent::noStickyPlaylistOrSekindo  color: #999; font-weight: bold; JSHandle@object
DEBUG: %cBaseDynamicAdsInjector::_logDensityInfo  color: #999; font-weight: bold; JSHandle@object
DEBUG: fun-hooks: referenced 'checkAdUnitSetup' but it was never created
DEBUG: fun-hooks: referenced 'checkAdUnitSetup' but it was never created
DEBUG: fun-hooks: referenced 'checkAdUnitSetup' but it was never created
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
DEBUG: Failed to load resource: net::ERR_NAME_NOT_RESOLVED
Could not create a browser instance:  TimeoutError: Navigation timeout of 30000 ms exceeded
    at ~\node_modules\puppeteer\lib\cjs\puppeteer\common\LifecycleWatcher.js:108:111 ~\scripts\chunkbase.js:51
                await browser.close();
                              ^
TypeError: Cannot read properties of undefined (reading 'close')
```
**Notes:**
1. With the current `page.goto` code Puppeteer
    1. Throws a lot of output.
    1. Times out after 30 seconds.
    1. The page dimensions are skipped.
    1. The screen capture never occurs.
    1. If I set `headless` to false, the page renders for the most part.  Some parts dont load.
1. If I swap around the URLs in the `page.goto` Puppeteer
    1. works fast without a ton of `DEBUG`s in output.
    1. The page dimensions are calculated.
    1. The screen capture occurs.

**Questions:**
1. What's the proper way to initialize `browser` to correct the `.close()` error within the try-catch?
1. How can I troubleshoot this further?  Especially where these `net::ERR_NAME_NOT_RESOLVED` errors come from (is it DNS-related)?

Open to all sorts of suggestions, on-line reading material, etc.

Thanks.