LightShot Image Extractor: scrapes the jpg screenshot link from a LightShot page

lightshot-image-extractor.ts

import { DOMParser, Element, HTMLDocument } from "https://deno.land/x/deno_dom/deno-dom-wasm.ts";

/**
 * Extracts the jpg url from a LightShot page
 * lightshot_image('http://prntscr.com/dki21q')
 * http://image.prntscr.com/image/1aaf571d0adf4aa098eb565bbb196af6.png
 */
export default async function lightshotImageExtractor(url:URL):URL {
	const connection = await fetch(url.href);
	if (!connection.ok) throw Error("Connection not OK");

	const document:HTMLDocument = new DOMParser().parseFromString(await connection.text(), "text/html")!;
	const imageElement:Element = document.getElementsByClassName('screenshot-image')[0];

	return new URL(imageElement.getAttribute('src'));
}