function extnameimport { extname } from "https://deno.land/std@0.224.0/path/posix/extname.ts"; extname(path: string): stringReturn the extension of the path with leading period. ExamplesExample 1 import { extname } from "https://deno.land/std@0.224.0/path/extname.ts"; console.log(extname("/home/user/Documents/")); // "" console.log(extname("/home/user/Documents/image.png")); // ".png" Parameterspath: stringwith extension Returnsstringextension (ex. for file.ts returns .ts)