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import { join } from "https://deno.land/std@0.155.0/path/mod.ts";
/** Check whether or not the given path exists as a directory. */export async function existsDir(path: string): Promise<boolean> {  try {    const stat = await Deno.lstat(path);    return stat.isDirectory;  } catch (err) {    if (err instanceof Deno.errors.NotFound) {      return false;    }    throw err;  }}
/** Check whether or not the given path exists as regular file. */export async function existsFile(path: string): Promise<boolean> {  try {    const stat = await Deno.lstat(path);    return stat.isFile;  } catch (err) {    if (err instanceof Deno.errors.NotFound) {      return false;    }    throw err;  }}
/** Find file in the `cwd` directory. */export async function findFile(filenames: string[], cwd = Deno.cwd()): Promise<string | undefined> {  for (const filename of filenames) {    const fullPath = join(cwd, filename);    if (await existsFile(fullPath)) {      return fullPath;    }  }}
/** Get files in the directory. */export async function getFiles(  dir: string,  filter?: (filename: string) => boolean,  __path: string[] = [],): Promise<string[]> {  const list: string[] = [];  if (await existsDir(dir)) {    for await (const dirEntry of Deno.readDir(dir)) {      if (dirEntry.isDirectory) {        list.push(...await getFiles(join(dir, dirEntry.name), filter, [...__path, dirEntry.name]));      } else {        const filename = [".", ...__path, dirEntry.name].join("/");        if (!filter || filter(filename)) {          list.push(filename);        }      }    }  }  return list;}