medikoo

var path = require('path')
  , fs = require('fs')
  , deferred = require('deferred'), delay = deferred.delay
  , promisify = deferred.promisify
  , lstat = promisify(fs.lstat), unlink = promisify(fs.unlink), readdir = promisify(fs.readdir)
  , rmdir = promisify(fs.rmdir)

var timeout = 0;
var rimraf = module.exports = function (p, opts) {
  opts = opts || {};

medikoo

//
// ### function randomString (bits)
// #### @bits {integer} The number of bits for the random base64 string returned to contain
// randomString returns a pseude-random ASCII string which contains at least the specified number of bits of entropy
// the return value is a string of length ⌈bits/6⌉ of characters from the base64 alphabet
//
helpers.randomString = exports.randomString = function (bits) {
  var chars, rand, i, ret;
  
  chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-'; 

medikoo

console.log("1. zip");
for (const [i, x] of zip(naturalNumbers(), naturalNumbers())) {
    console.log(i, x);
}

console.log("2. Array.from");
Array.from(naturalNumbers(), function (x, i) {
    console.log(i, x);
});