Log a data URL containing a screenshot of the window

screenshot.js

let canvas = window.document.createElementNS("http://www.w3.org/1999/xhtml", "html:canvas");
let context = canvas.getContext("2d");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
context.drawWindow(window, 0, 0, canvas.width, canvas.height, "white");
console.log(`
📸 📸 📸 📸

${canvas.toDataURL()}

📸 📸 📸 📸
`);