NPM Img Compression Script

compress.js

const dir = require('node-dir');
var jimp = require("jimp");
const args = process.argv;

dir.promiseFiles(args[2])
.then(files => {
    for(let file of files) {
        jimp.read(file).then(image => {
            image
            .quality(60)
            .resize(Math.min(800, image.bitmap.width), jimp.AUTO)
            .write(args[3] + file + '.' + image.getExtension());
        })
    }
})
.catch(error => console.log(error));

package.json

{
  "name": "npm-minify",
  "version": "1.0.0",
  "description": "## Your Goals: ##",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "compress": "node compress.js %npm_package_config_src% %npm_package_config_out%"
  },
  "devDependencies": {
    "jimp": "^0.2.28",
    "node-dir": "^0.1.17"
  },
  "config": {
    "src": "./images_src",
    "out": "./dest/"
  }
}