requirebin sketch

index.js

// Welcome! require() some modules from npm (like you were using browserify)
// and then hit Run Code to run your code on the right side.
// Modules get downloaded from browserify-cdn and bundled in your browser.
var ee = require('event-emitter');

const ev = ee();    
var credit = 0;
//  var hasCredit = false;
function checkCredit() {
  const hasCredit = credit > 0;
  console.log(hasCredit);
}

function setCredit(amount) {
  credit = amount;
  ev.emit('credit-changed');
}

ev.on('credit-changed', checkCredit);    

setCredit(100);
setCredit(-100);

minified.js

setTimeout(function(){require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){"use strict";var assign=require("es5-ext/object/assign"),normalizeOpts=require("es5-ext/object/normalize-options"),isCallable=require("es5-ext/object/is-callable"),contains=require("es5-ext/string/#/contains"),d;d=module.exports=function(dscr,value){var c,e,w,options,desc;if(arguments.length<2||typeof dscr!=="string"){options=value;value=dscr;dscr=null}else{options=arguments[2]}if(dscr==null){c=w=true;e=false}else{c=contains.call(dscr,"c");e=contains.call(dscr,"e");w=contains.call(dscr,"w")}desc={value:value,configurable:c,enumerable:e,writable:w};return!options?desc:assign(normalizeOpts(options),desc)};d.gs=function(dscr,get,set){var c,e,options,desc;if(typeof dscr!=="string"){options=set;set=get;get=dscr;dscr=null}else{options=arguments[3]}if(get==null){get=undefined}else if(!isCallable(get)){options=get;get=set=undefined}else if(set==null){set=undefined}else if(!isCallable(set)){options=set;set=undefined}if(dscr==null){c=true;e=false}else{c=contains.call(dscr,"c");e=contains.call(dscr,"e")}desc={get:get,set:set,configurable:c,enumerable:e};return!options?desc:assign(normalizeOpts(options),desc)}},{"es5-ext/object/assign":2,"es5-ext/object/is-callable":5,"es5-ext/object/normalize-options":9,"es5-ext/string/#/contains":12}],2:[function(require,module,exports){"use strict";module.exports=require("./is-implemented")()?Object.assign:require("./shim")},{"./is-implemented":3,"./shim":4}],3:[function(require,module,exports){"use strict";module.exports=function(){var assign=Object.assign,obj;if(typeof assign!=="function")return false;obj={foo:"raz"};assign(obj,{bar:"dwa"},{trzy:"trzy"});return obj.foo+obj.bar+obj.trzy==="razdwatrzy"}},{}],4:[function(require,module,exports){"use strict";var keys=require("../keys"),value=require("../valid-value"),max=Math.max;module.exports=function(dest,src){var error,i,l=max(arguments.length,2),assign;dest=Object(value(dest));assign=function(key){try{dest[key]=src[key]}catch(e){if(!error)error=e}};for(i=1;i<l;++i){src=arguments[i];keys(src).forEach(assign)}if(error!==undefined)throw error;return dest}},{"../keys":6,"../valid-value":11}],5:[function(require,module,exports){"use strict";module.exports=function(obj){return typeof obj==="function"}},{}],6:[function(require,module,exports){"use strict";module.exports=require("./is-implemented")()?Object.keys:require("./shim")},{"./is-implemented":7,"./shim":8}],7:[function(require,module,exports){"use strict";module.exports=function(){try{Object.keys("primitive");return true}catch(e){return false}}},{}],8:[function(require,module,exports){"use strict";var keys=Object.keys;module.exports=function(object){return keys(object==null?object:Object(object))}},{}],9:[function(require,module,exports){"use strict";var forEach=Array.prototype.forEach,create=Object.create;var process=function(src,obj){var key;for(key in src)obj[key]=src[key]};module.exports=function(options){var result=create(null);forEach.call(arguments,function(options){if(options==null)return;process(Object(options),result)});return result}},{}],10:[function(require,module,exports){"use strict";module.exports=function(fn){if(typeof fn!=="function")throw new TypeError(fn+" is not a function");return fn}},{}],11:[function(require,module,exports){"use strict";module.exports=function(value){if(value==null)throw new TypeError("Cannot use null or undefined");return value}},{}],12:[function(require,module,exports){"use strict";module.exports=require("./is-implemented")()?String.prototype.contains:require("./shim")},{"./is-implemented":13,"./shim":14}],13:[function(require,module,exports){"use strict";var str="razdwatrzy";module.exports=function(){if(typeof str.contains!=="function")return false;return str.contains("dwa")===true&&str.contains("foo")===false}},{}],14:[function(require,module,exports){"use strict";var indexOf=String.prototype.indexOf;module.exports=function(searchString){return indexOf.call(this,searchString,arguments[1])>-1}},{}],"event-emitter":[function(require,module,exports){"use strict";var d=require("d"),callable=require("es5-ext/object/valid-callable"),apply=Function.prototype.apply,call=Function.prototype.call,create=Object.create,defineProperty=Object.defineProperty,defineProperties=Object.defineProperties,hasOwnProperty=Object.prototype.hasOwnProperty,descriptor={configurable:true,enumerable:false,writable:true},on,once,off,emit,methods,descriptors,base;on=function(type,listener){var data;callable(listener);if(!hasOwnProperty.call(this,"__ee__")){data=descriptor.value=create(null);defineProperty(this,"__ee__",descriptor);descriptor.value=null}else{data=this.__ee__}if(!data[type])data[type]=listener;else if(typeof data[type]==="object")data[type].push(listener);else data[type]=[data[type],listener];return this};once=function(type,listener){var once,self;callable(listener);self=this;on.call(this,type,once=function(){off.call(self,type,once);apply.call(listener,this,arguments)});once.__eeOnceListener__=listener;return this};off=function(type,listener){var data,listeners,candidate,i;callable(listener);if(!hasOwnProperty.call(this,"__ee__"))return this;data=this.__ee__;if(!data[type])return this;listeners=data[type];if(typeof listeners==="object"){for(i=0;candidate=listeners[i];++i){if(candidate===listener||candidate.__eeOnceListener__===listener){if(listeners.length===2)data[type]=listeners[i?0:1];else listeners.splice(i,1)}}}else{if(listeners===listener||listeners.__eeOnceListener__===listener){delete data[type]}}return this};emit=function(type){var i,l,listener,listeners,args;if(!hasOwnProperty.call(this,"__ee__"))return;listeners=this.__ee__[type];if(!listeners)return;if(typeof listeners==="object"){l=arguments.length;args=new Array(l-1);for(i=1;i<l;++i)args[i-1]=arguments[i];listeners=listeners.slice();for(i=0;listener=listeners[i];++i){apply.call(listener,this,args)}}else{switch(arguments.length){case 1:call.call(listeners,this);break;case 2:call.call(listeners,this,arguments[1]);break;case 3:call.call(listeners,this,arguments[1],arguments[2]);break;default:l=arguments.length;args=new Array(l-1);for(i=1;i<l;++i){args[i-1]=arguments[i]}apply.call(listeners,this,args)}}};methods={on:on,once:once,off:off,emit:emit};descriptors={on:d(on),once:d(once),off:d(off),emit:d(emit)};base=defineProperties({},descriptors);module.exports=exports=function(o){return o==null?create(base):defineProperties(Object(o),descriptors)};exports.methods=methods},{d:1,"es5-ext/object/valid-callable":10}]},{},[]);var ee=require("event-emitter");const ev=ee();var credit=0;function checkCredit(){const hasCredit=credit>0;console.log(hasCredit)}function setCredit(amount){credit=amount;ev.emit("credit-changed")}ev.on("credit-changed",checkCredit);setCredit(100);setCredit(-100)},0);

package.json

{
  "name": "requirebin-sketch",
  "version": "1.0.0",
  "dependencies": {
    "event-emitter": "0.3.4"
  }
}

page-body.html

<!-- contents of this file will be placed inside the <body> -->

page-head.html

<!-- contents of this file will be placed inside the <head> -->

requirebin.md

made with requirebin