function toFeedimport { toFeed } from "https://deno.land/x/rss@1.1.1/src/mappers/mapper.ts"; toFeed(feedType: FeedType, feed: | InternalAtom | InternalRSS2 | InternalRSS1 | JsonFeed): Feed | nullParametersfeedType: FeedTypefeed: | InternalAtom | InternalRSS2 | InternalRSS1 | JsonFeedReturnsFeed | null