List all files in a directory in Node.js recursively in a synchronous fashion

walksync.js

// List all files in a directory in Node.js recursively in a synchronous fashion
var walkSync = function(dir, filelist) {
  var fs = fs || require('fs'),
      files = fs.readdirSync(dir);
  filelist = filelist || [];
  files.forEach(function(file) {
    if (fs.statSync(dir + file).isDirectory()) {
      filelist = walkSync(dir + file + '/', filelist);
    }
    else {
      filelist.push(file);
    }
  });
  return filelist;
};

Hi, here's a modern version:

const fs = require('fs').promises;
const path = require('path');

const walk = async (dir, filelist = []) => {
  const files = await fs.readdir(dir);

  for (file of files) {
    const filepath = path.join(dir, file);
    const stat = await fs.stat(filepath);

    if (stat.isDirectory()) {
      filelist = await walk(filepath, filelist);
    } else {
      filelist.push(file);
    }
  }

  return filelist;
}

Here's what I used (needed import)

import * as fs from 'fs/promises';
import path from 'path';

export async function directory_read(dir, filelist = []) {
  const files = await fs.readdir(dir);

  for (let file of files) {
    const filepath = path.join(dir, file);
    const stat = await fs.stat(filepath);

    if (stat.isDirectory()) {
      filelist = await directory_read(filepath, filelist);
    } else {
      filelist.push(file);
    }
  }

  return filelist;
}

Node v20.1+

const filelist = await fs.readdir(dir, { recursive: true });