import { Request } from "https://deno.land/x/mandarinets@v2.3.2/deps.ts";
Returns an array of languages, accepted by the requestor, in order of
preference. If there are no languages supplied by the requestor,
undefined
is returned.
For a given set of languages, return the best match accepted by the
requestor. If there are no languages that match, then the method returns
undefined
.