requirebin sketch

index.js

var Store = require('fantasy-stores'),
    target,
    store = Store(
      function(x) { return target = x; },
      function() { return target; }
    ),
    newStore;

store.set(1);

console.log(store.get());

newStore = store.map(function(a) { return a + 1; });

console.log(newStore.set(1)); // outputs 2.
console.log(newStore.get()); // outputs 1.

minified.js

require=function(t,e,n){function r(n,u){if(!e[n]){if(!t[n]){var i="function"==typeof require&&require;if(!u&&i)return i(n,!0);if(o)return o(n,!0);throw Error("Cannot find module '"+n+"'")}var s=e[n]={exports:{}};t[n][0].call(s.exports,function(e){var o=t[n][1][e];return r(o?o:e)},s,s.exports)}return e[n].exports}for(var o="function"==typeof require&&require,u=0;n.length>u;u++)r(n[u]);return r}({"fantasy-stores":[function(t,e){e.exports=t("9wPIsL")},{}],"9wPIsL":[function(t,e){var n=t("daggy"),r=n.tagged("set","get");r.prototype.extract=function(){return this.set(this.get())},r.prototype.extend=function(t){var e=this;return r(function(n){return t(r(e.set,function(){return n}))},this.get)},r.prototype.map=function(t){return this.extend(function(e){return t(e.extract())})},e!==void 0&&(e.exports=r)},{daggy:1}],1:[function(t,e,n){(function(){(function(t,e){"use strict";"function"==typeof define&&define.amd?define(["exports"],e):n!==void 0?e(n):(t.daggy={},e(t.daggy))})(this,function(t){function e(t){function e(){}return e.prototype=t,new e}function n(t,n){return t instanceof n?t:e(n.prototype)}function r(){function t(){var r,o=n(this,t);if(arguments.length!=e.length)throw new TypeError("Expected "+e.length+" arguments, got "+arguments.length);for(r=0;e.length>r;r++)o[e[r]]=arguments[r];return o}var e=[].slice.apply(arguments);return t._length=e.length,t}function o(t){function n(){throw new TypeError("Tagged sum was called instead of one of its properties.")}function o(e){return function(n){var r,o=t[e],u=[];if(!n[e])throw new TypeError("Constructors given to cata didn't include: "+e);for(r=0;o.length>r;r++)u.push(this[o[r]]);return n[e].apply(this,u)}}function u(t){var r=e(n.prototype);return r.cata=o(t),r}var i;for(i in t)t[i].length?(n[i]=r.apply(null,t[i]),n[i].prototype=u(i)):n[i]=u(i);return n}t.create=e,t.getInstance=n,t.tagged=r,t.taggedSum=o})})()},{}]},{},[]);var Store=require("fantasy-stores"),target,store=Store(function(t){return target=t},function(){return target}),newStore;store.set(1),console.log(store.get()),newStore=store.map(function(t){return t+1}),console.log(newStore.set(1)),console.log(newStore.get());

page-head.html

<style type='text/css'>html, body { margin: 0; padding: 0; border: 0; }
body, html { height: 100%; width: 100%; }</style>

requirebin.md

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