function mimeTypeimport { mimeType } from "https://deno.land/x/deno_image@0.0.4/mod.ts"; mimeType(imgFile: Uint8Array)Return mime type of a file ParametersimgFile: Uint8Array header of file List here: https://en.wikipedia.org/wiki/List_of_file_signatures https://mimesniff.spec.whatwg.org/#matching-an-image-type-pattern