minify-all-cli/lib/apputil.js

Minify All JS, CSS and HTML files in a folder by using UglifyJS, CSSNano and HTMLMinifier with an option to gzip all the files as well.

#! /usr/bin/env node

//"use strict";

const fs = require("fs");
const path = require("path");
const { createGzip } = require("zlib");
const { pipeline } = require("stream");
const { createReadStream, createWriteStream } = require("fs");
const { promisify } = require("util");
const pipe = promisify(pipeline);

const isBlank = function (obj) {
  return (!obj || obj.trim() === "");
};

const getAllFiles = function(dirPath, arrayOfFiles) {
  files = fs.readdirSync(dirPath);
  
  arrayOfFiles = arrayOfFiles || [];

  files.forEach(function(file) {
    if (fs.statSync(dirPath + path.sep + file).isDirectory()) {
      arrayOfFiles = getAllFiles(dirPath + path.sep + file, arrayOfFiles);
    }
    else {
      arrayOfFiles.push(path.join(dirPath, path.sep, file));
    }
  })

  return arrayOfFiles;
}

async function doGzip(input, output) {
  const gzip = createGzip();
  const source = createReadStream(input);
  const destination = createWriteStream(output);
  await pipe(source, gzip, destination);
}

module.exports = {
  "isBlank": isBlank,
  "doGzip": doGzip,
  "getAllFiles": getAllFiles
};