import { Puppeteer } from "https://deno.land/x/puppeteer@14.1.1/vendor/puppeteer-core/puppeteer/common/Puppeteer.d.ts";
Registers a CustomQueryHandler | custom query handler. After
registration, the handler can be used everywhere where a selector is
expected by prepending the selection string with <name>/
. The name is
only allowed to consist of lower- and upper case latin letters.