function importAllTextFilesimport { importAllTextFiles } from "https://deno.land/x/importall@v1.1.1/mod.ts"; importAllTextFiles(dir: string, extensions?: (string | undefined)[]): Promise<Record<string, string>>Parametersdir: stringoptionalextensions: (string | undefined)[] = [UNSUPPORTED]ReturnsPromise<Record<string, string>>