makeFolders.js

import _ from 'lodash';
import fs from 'fs';

/**
* FILENAME: `makeFolders.js`
* USAGE: `babel-node makeFolders <rootFolder> <startMonth> <endMonth>`
*/

const pad = (num) => num < 10 ? `0${num}` : num;
const has30 = (month) => _.contains([4, 6, 9, 11], month);
const [root, start, end] = _.slice(process.argv, 2, 5);

fs.mkdirSync(root);

_.range(start, parseInt(end) + 1).forEach(month => {
  fs.mkdirSync(`${root}/${pad(month)}`);
  _.range(1, has30(month) ? 31 : 32).forEach(day => {
    fs.mkdirSync(`${root}/${pad(month)}/${pad(day)}`);
  });
});