function getFilesimport { getFiles } from "https://dotland.deno.dev/x/aleph@1.0.0-beta.15/server/helpers.ts"; getFiles(dir: string,filter?: (filename: string) => boolean,__path?: string[],): Promise<string[]>Get files in the directory. Parametersdir: stringoptionalfilter: (filename: string) => booleanoptional__path: string[] = [UNSUPPORTED]ReturnsPromise<string[]>