Module to file paths in a given directory

AccumulateFiles.js

// this file exists just to name the gist, and because gist ordering is asciibetical, it's name starts with a capital letter.

index.js

const fs = require('fs');
const path = require('path');
const util = require('util');

/**
 * 
 * 
 * @param {string} dir 
 * @param {array} [list=[]] 
 * @returns {array}
 */
const accumulateFiles = (dir, list = []) => {
  // helper to find all files to upload
  return util
    .promisify(fs.readdir)(dir)
    .then((result) => {
      // separate files from directories
      const dirs = [];
      result.forEach((f) => {
        const fPath = path.join(dir, f);
        const stat = fs.statSync(fPath);
        if (stat.isDirectory()) {
          dirs.push(fPath);
        } else {
          list.push(fPath);
        }
      });

      // recursively search directories for files to accumulate
      if (dirs.length) {
        return Promise.all(
          dirs.map((d) => {
            return accumulateFiles(d, list);
          }),
        );
      }

      return list;
    })
    .then((list) => {
      return list;
    });
};

module.exports = accumulateFiles;

package.json

{
  "name": "accumulate-files",
  "version": "0.1.0"
}