function emptyDirimport { emptyDir } from "https://dotland.deno.dev/x/ultra@v2.3.0/lib/build/deps.ts"; emptyDir(dir: string | URL)Ensures that a directory is empty. Deletes directory contents if the directory is not empty. If the directory does not exist, it is created. The directory itself is not deleted. Requires the --allow-read and --allow-write flag. ExamplesExample 1 import { emptyDir } from "https://deno.land/std@$STD_VERSION/fs/mod.ts"; emptyDir("./foo"); // returns a promise Parametersdir: string | URL