Replaces emoji symbols in SudokuPad (paste into console)

sudokupad emoji-replacement.js

(async () => {
const requireScript = async src => new Promise((onload, onerror) => document.getElementsByTagName('head')[0].appendChild(Object.assign(document.createElement('script'), {src, onload, onerror})));
const requireDependencies = async deps => Promise.all(deps.filter(url=>performance.getEntriesByName(url, 'resource').length==0).map(requireScript));
await requireDependencies([`https://unpkg.com/twemoji@14.0.2/dist/twemoji.min.js`]);
const style = `img.emoji { height: 1em; width: 1em; margin: 0 .05em 0 .1em; vertical-align: -0.1em; }`;
await attachStylesheet(style);
const opts = {ext: '.svg', folder: 'svg'};
twemoji.parse(document.querySelector('.controls-info'), opts);
const textNodes = document.querySelectorAll('#svgrenderer text');
for(const node of textNodes) if([...node.innerHTML].length === 1 && node.innerHTML.length !== 1) {
	node.insertAdjacentHTML('afterend', twemoji.parse(node.innerHTML, opts)
		.replace(/^<img/, `<image`).replace(` src="`, ` href="`).replace(` draggable="false"`, ``)
	);
	let bb = node.getBBox(), next = node.nextSibling;
	for(const [key, val] of ['x','y','width','height'].map(key => [key, bb[key]])) next.setAttribute(key, val);
	node.remove();
}
})();