Returns the extensions known to be associated with the media type type. The returned extensions will each begin with a leading dot, as in .html.

When type has no associated extensions, the function returns undefined.

Extensions are returned without a leading ..

Examples

import { extensionsByType } from "https://deno.land/std@0.224.0/media_types/mod.ts";

extensionsByType("application/json"); // ["js", "mjs"]
extensionsByType("text/html; charset=UTF-8"); // ["html", "htm", "shtml"]
extensionsByType("application/foo"); // undefined