iter

Iter is a functional helper library for ES6 iterables. It's API is similiar to Underscore JS, with a few key differences. First it'll Iterate over any ES6 iterable or iterator, or any transpiled iterable or iterator from the Traceur ES6 Transpiler. Second, it's lazy by default...

Getting Started

In NodeJS

In your project directory run: npm install --save es6-iter

Start your Node program with the command line argument --harmony. Then use it like so: var iter = require('es6-iter').iter;

// A convoluted way to print 'Hello World'
iter(function*() { yield 'hello world!' })
  .forEach(function(string) {
    console.log(string);
  })
  .array();

In the Browser

Installing It

If you have Bower installed, in your project directory run:

bower install es6-iter

If you have Git installed, in your project directory run:

git clone https://github.com/jdt/es6-iter

Otherwise find the download repo button on this page and save it to your project directory.

Consuming It

Inside an ES6 JS File

Loading Iter in any ES6 environment is the simplest way to get the library.

import iter from 'es6-iter/src/iter';
console.log(iter([1,2,3]).array()); // Prints 1, 2, 3

With System Polyfill from Traceur

You can load Iter as a script that injects it's packages into the System polyfill used by Traceur. This is the suggested way to consume Iter in an ES5 JS environment given you have to load the Traceur runtime as a dependency to Iter. To do this you include the runtime and bundled script in your HTML page:

<script src="es6-iter/node_modules/traceur/bin/traceur-runtime.js"></script>
<script src="es6-iter/out/system/iter.js"></script>
<script>
  (function() {
    console.log(iter([1,2,3]).array()); // Prints 1, 2, 3
  })();
</script>

With AMD

Add iter and traceur-runtime to your requirejs config as a package:

requirejs.config({
  paths: {
    'traceur': 'es6-iter/node_modules/traceur/bin/traceur-runtime'
  },
  packages: [
    { name: 'iter', main: 'index.js', location: 'es6-iter/out/amd', }
  ]
})

Use it in any of your modules like so:

define(['iter'], function(iter) {
  iter = iter.iter;

  // Prints 1, 2, 3
  console.log(iter([1,2,3]).array());
})