Set custom User-Agent string for Puppeteer as workaround (projectwallace#35)

Author: bartveneman

_chromium.js

@@ -12,6 +12,10 @@ exports.extractCss = async url => {
 	})
 	const page = await browser.newPage()
 
+	// Set an explicit UserAgent, because the default UserAgent string includes something like
+	// `HeadlessChrome/88.0.4298.0` and some websites/CDN's block that with a HTTP 403
+	await page.setUserAgent('Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:85.0) Gecko/20100101 Firefox/85.0')
+
 	// Start CSS coverage. This is the meat and bones of this module
 	await page.coverage.startCSSCoverage().catch(() => {})
 

readme.md

@@ -14,11 +14,6 @@ The folks from [CSS Stats](https://cssstats.com/) have created [get-css](https:/
 
 This package uses an actual browser under the hood to get all the CSS and exposes an HTTP endpoint that accepts a url to get the CSS from.
 
-## Local testing
-
-I have no idea how local testing for Now is supposed to work, so I created a tiny HTTP server in `dev.js` that calls the actual function that gets deployed.
-Run `ENV=dev npm run dev` to run a local version of the function for local testing.
-
 ## Credits
 
 - This repo is pretty much an exact copy of [this example from Zeit](https://github.com/zeit/now-examples/tree/master/puppeteer-screenshot).