immutable-getter-patch.js

import { Iterable, Map, List } from 'immutable';

// add fast getter into immutable
const accesor = new Proxy(Object.prototype, {
  get: (target, property, receiver) => target.get(property),
});
Object.setPrototypeOf(Iterable.prototype, accesor);

// now you can do:
const m = Map({ a: 1 });
m.get('a'); // 1
m.a // 1
m.map(..)
m.merge(..)
..

const l = List(['a', 'b']);
l[0] // 'a'
..

// you can use immutable with classic libraries
// you can forget about `toJS()`

// TODO: test it in many cases
// see also: https://github.com/facebook/immutable-js/issues/440