reading directories files into a list

readFiles.js

const fs = require('fs');
const Promise = require('bluebird');
const debug = require('../debug.js').spawn('readFiles');
const _ = require('lodash');

const readdirAsync = Promise.promisify(fs.readdir);
const readFileAsync = Promise.promisify(fs.readFile);

/**
 *   Easy way for us to load all files in a directory and index the content by the filename
 */   
function readFiles(dirname) {
  return readdirAsync(dirname)
  .then((filenames) =>
    Promise.map(filenames, (filename) =>
      readFileAsync(dirname + '/' + filename, 'utf-8')
      .then((content) => {
        debug(() => filename);
        debug(() => content);
        return {filename, content}
      })
  ))
  .then((payload) => _(payload).keyBy("filename").mapValues('content').value());
}

module.exports = readFiles;

readFiles.sh

#!/usr/bin/env node
const readFiles = require('../util/readFiles.js');
const debug = require('../debug').spawn("script:readFiles");

const cwd = process.cwd();
debug("cwd: ", cwd);
debug("args:", process.argv);
debug();
debug("========================");

readFiles(`${cwd}/${process.argv[2]}`)
.then(console.log)
.catch(console.error);