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import mem from 'mem';
import domify from 'doma';
async function fetchDom(url: string): Promise<DocumentFragment>;
async function fetchDom<TElement extends Element>(url: string, selector: string): Promise<TElement | undefined>;
async function fetchDom(url: string, selector?: string): Promise<Node | undefined> {
const absoluteURL = new URL(url, location.origin).toString(); // Firefox `fetch`es from the content script, so relative URLs fail
const response = await fetch(absoluteURL);
const dom = domify(await response.text());
if (selector) {
return dom.querySelector(selector) ?? undefined;
}
return dom;
}
export default mem(fetchDom);
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