requirebin sketch

index.js

// require() some stuff from npm (like you were using browserify)
// and then hit Run Code to run it on the right

var flyd = require('flyd');
var scanMerge = require('flyd-scanmerge');

var stream = flyd.stream(0);

var createTodo = flyd.stream();
var deleteTodo = flyd.stream();

var todos = scanMerge([
  [createTodo, function (todos, todo) {
    return todos.concat(todo);
  }],
  
  [deleteTodo, function (todos, id) {
    return todos.filter(function (todo) {
      return todo.id !== id;
    });
  }],
], []);

flyd.stream([todos], function () {
  console.log(todos());
});

createTodo({
  id: 1,
  test: 'baba'
});

createTodo({
  id: 2,
  test: 'hehe'
});

deleteTodo(1);

minified.js

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}({flyd:[function(require,module,exports){(function(root,factory){if(typeof define==="function"&&define.amd){define([],factory)}else if(typeof exports==="object"){module.exports=factory()}else{root.flyd=factory()}})(this,function(){"use strict";function isFunction(obj){return!!(obj&&obj.constructor&&obj.call&&obj.apply)}function isUndefined(v){return v===undefined}var toUpdate=[];var inStream;function removeListener(listeners,s){var idx=listeners.indexOf(s);listeners[idx]=listeners[listeners.length-1];listeners.length--}function map(s,f){return stream([s],function(){return f(s())})}var scan=curryN(3,function(f,acc,s){var ns=stream([s],function(){return acc=f(acc,s())});if(!ns.hasVal)ns(acc);return ns});var merge=curryN(2,function(s1,s2){return stream([s1,s2],function(n,changed){var v1,v2;if(changed)return changed();else{v1=s1();v2=s2();return v1===undefined?v2:v1}},true)});function ap(s2){var s1=this;return stream([s1,s2],function(){return s1()(s2())})}function of(v){return stream(v)}function initialDepsNotMet(stream){if(!stream.depsMet){stream.depsMet=stream.deps.every(function(s){return s.hasVal})}return!stream.depsMet}function updateStream(s){if(initialDepsNotMet(s))return;inStream=s;var returnVal=s.fn(s,s.depChanged);if(returnVal!==undefined){s(returnVal)}inStream=undefined;s.depChanged=undefined}function findDeps(order,s){if(!s.queued){s.queued=true;for(var i=0;i<s.listeners.length;++i){findDeps(order,s.listeners[i])}order.push(s)}}function updateDeps(s){var i,order=[];for(i=0;i<s.listeners.length;++i){s.listeners[i].depChanged=s;findDeps(order,s.listeners[i])}for(i=order.length-1;i>=0;--i){if(!isUndefined(order[i].depChanged)){updateStream(order[i])}order[i].queued=false}}function flushUpdate(){for(var s;s=toUpdate.shift();){updateDeps(s)}}function destroy(stream){if(stream.listeners.length!==0){throw new Error("Trying to destroy stream with listeners attached")}stream.deps.forEach(function(dep){removeListener(dep.listeners,stream)})}function isStream(stream){return isFunction(stream)&&"depsMet"in stream}function streamToString(){return"stream("+this.val+")"}function stream(arg,fn,waitForDeps){function s(n){if(arguments.length>0){if(n&&isFunction(n.then)){n.then(s);return}s.val=n;s.hasVal=true;if(inStream!==s){toUpdate.push(s);if(!inStream)flushUpdate()}else{for(var j=0;j<s.listeners.length;++j){s.listeners[j].depChanged=s}}return s}else{return s.val}}s.hasVal=false;s.val=undefined;s.listeners=[];s.deps=[];s.depsMet=isUndefined(waitForDeps)&&arguments.length>1?false:true;s.depChanged=undefined;s.queued=false;s.fn=fn;s.map=map.bind(null,s);s.ap=ap;s.of=of;s.toString=streamToString;if(arguments.length>1){s.deps=arg;arg.forEach(function(dep){dep.listeners.push(s)});updateStream(s);flushUpdate()}else if(arguments.length===1){s(arg)}return s}var transduce=curryN(2,function(xform,source){xform=xform(new StreamTransformer(stream));return stream([source],function(){return xform.step(undefined,source())})});function StreamTransformer(res){}StreamTransformer.prototype.init=function(){};StreamTransformer.prototype.result=function(){};StreamTransformer.prototype.step=function(s,v){return v};var _={placeholder:true};function isPlaceholder(p){return p===_||p&&p.ramda==="placeholder"}function toArray(arg){var arr=[];for(var i=0;i<arg.length;++i){arr[i]=arg[i]}return arr}function ofArity(n,fn){if(arguments.length===1){return ofArity.bind(undefined,n)}switch(n){case 0:return function(){return fn.apply(this,arguments)};case 1:return function(a0){void a0;return fn.apply(this,arguments)};case 2:return function(a0,a1){void a1;return fn.apply(this,arguments)};case 3:return function(a0,a1,a2){void a2;return fn.apply(this,arguments)};case 4:return function(a0,a1,a2,a3){void a3;return fn.apply(this,arguments)};case 5:return function(a0,a1,a2,a3,a4){void a4;return fn.apply(this,arguments)};case 6:return function(a0,a1,a2,a3,a4,a5){void a5;return fn.apply(this,arguments)};case 7:return function(a0,a1,a2,a3,a4,a5,a6){void a6;return fn.apply(this,arguments)};case 8:return function(a0,a1,a2,a3,a4,a5,a6,a7){void a7;return fn.apply(this,arguments)};case 9:return function(a0,a1,a2,a3,a4,a5,a6,a7,a8){void a8;return fn.apply(this,arguments)};case 10:return function(a0,a1,a2,a3,a4,a5,a6,a7,a8,a9){void a9;return fn.apply(this,arguments)};default:throw new Error("First argument to arity must be a non-negative integer no greater than ten")}}function curryN(length,fn){return ofArity(length,function(){var n=arguments.length;var shortfall=length-n;var idx=n;while(--idx>=0){if(isPlaceholder(arguments[idx])){shortfall+=1}}if(shortfall<=0){return fn.apply(this,arguments)}else{var initialArgs=toArray(arguments);return curryN(shortfall,function(){var currentArgs=toArray(arguments);var combinedArgs=[];var idx=-1;while(++idx<n){var val=initialArgs[idx];combinedArgs[idx]=isPlaceholder(val)?currentArgs.shift():val}return fn.apply(this,combinedArgs.concat(currentArgs))})}})}return{stream:stream,isStream:isStream,transduce:transduce,merge:merge,reduce:scan,scan:scan,destroy:destroy,map:curryN(2,function(f,s){return map(s,f)}),curryN:curryN,_:_}})},{}]},{},[]);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){(function(root,factory){if(typeof define==="function"&&define.amd){define([],factory)}else if(typeof exports==="object"){module.exports=factory()}else{root.flyd=factory()}})(this,function(){"use strict";function isFunction(obj){return!!(obj&&obj.constructor&&obj.call&&obj.apply)}function isUndefined(v){return v===undefined}var toUpdate=[];var inStream;function removeListener(listeners,s){var idx=listeners.indexOf(s);listeners[idx]=listeners[listeners.length-1];listeners.length--}function map(s,f){return stream([s],function(){return f(s())})}var scan=curryN(3,function(f,acc,s){var ns=stream([s],function(){return acc=f(acc,s())});if(!ns.hasVal)ns(acc);return ns});var merge=curryN(2,function(s1,s2){return stream([s1,s2],function(n,changed){var v1,v2;if(changed)return changed();else{v1=s1();v2=s2();return v1===undefined?v2:v1}},true)});function ap(s2){var s1=this;return stream([s1,s2],function(){return s1()(s2())})}function of(v){return stream(v)}function initialDepsNotMet(stream){if(!stream.depsMet){stream.depsMet=stream.deps.every(function(s){return s.hasVal})}return!stream.depsMet}function updateStream(s){if(initialDepsNotMet(s))return;inStream=s;var returnVal=s.fn(s,s.depChanged);if(returnVal!==undefined){s(returnVal)}inStream=undefined;s.depChanged=undefined}function findDeps(order,s){if(!s.queued){s.queued=true;for(var i=0;i<s.listeners.length;++i){findDeps(order,s.listeners[i])}order.push(s)}}function updateDeps(s){var i,order=[];for(i=0;i<s.listeners.length;++i){s.listeners[i].depChanged=s;findDeps(order,s.listeners[i])}for(i=order.length-1;i>=0;--i){if(!isUndefined(order[i].depChanged)){updateStream(order[i])}order[i].queued=false}}function flushUpdate(){for(var s;s=toUpdate.shift();){updateDeps(s)}}function destroy(stream){if(stream.listeners.length!==0){throw new Error("Trying to destroy stream with listeners attached")}stream.deps.forEach(function(dep){removeListener(dep.listeners,stream)})}function isStream(stream){return isFunction(stream)&&"depsMet"in stream}function streamToString(){return"stream("+this.val+")"}function stream(arg,fn,waitForDeps){function s(n){if(arguments.length>0){if(n&&isFunction(n.then)){n.then(s);return}s.val=n;s.hasVal=true;if(inStream!==s){toUpdate.push(s);if(!inStream)flushUpdate()}else{for(var j=0;j<s.listeners.length;++j){s.listeners[j].depChanged=s}}return s}else{return s.val}}s.hasVal=false;s.val=undefined;s.listeners=[];s.deps=[];s.depsMet=isUndefined(waitForDeps)&&arguments.length>1?false:true;s.depChanged=undefined;s.queued=false;s.fn=fn;s.map=map.bind(null,s);s.ap=ap;s.of=of;s.toString=streamToString;if(arguments.length>1){s.deps=arg;arg.forEach(function(dep){dep.listeners.push(s)});updateStream(s);flushUpdate()}else if(arguments.length===1){s(arg)}return s}var transduce=curryN(2,function(xform,source){xform=xform(new StreamTransformer(stream));return stream([source],function(){return xform.step(undefined,source())})});function StreamTransformer(res){}StreamTransformer.prototype.init=function(){};StreamTransformer.prototype.result=function(){};StreamTransformer.prototype.step=function(s,v){return v};var _={placeholder:true};function isPlaceholder(p){return p===_||p&&p.ramda==="placeholder"}function toArray(arg){var arr=[];for(var i=0;i<arg.length;++i){arr[i]=arg[i]}return arr}function ofArity(n,fn){if(arguments.length===1){return ofArity.bind(undefined,n)}switch(n){case 0:return function(){return fn.apply(this,arguments)};case 1:return function(a0){void a0;return fn.apply(this,arguments)};case 2:return function(a0,a1){void a1;return fn.apply(this,arguments)};case 3:return function(a0,a1,a2){void a2;return fn.apply(this,arguments)};case 4:return function(a0,a1,a2,a3){void a3;return fn.apply(this,arguments)};case 5:return function(a0,a1,a2,a3,a4){void a4;return fn.apply(this,arguments)};case 6:return function(a0,a1,a2,a3,a4,a5){void a5;return fn.apply(this,arguments)};case 7:return function(a0,a1,a2,a3,a4,a5,a6){void a6;return fn.apply(this,arguments)};case 8:return function(a0,a1,a2,a3,a4,a5,a6,a7){void a7;return fn.apply(this,arguments)};case 9:return function(a0,a1,a2,a3,a4,a5,a6,a7,a8){void a8;return fn.apply(this,arguments)};case 10:return function(a0,a1,a2,a3,a4,a5,a6,a7,a8,a9){void a9;return fn.apply(this,arguments)};default:throw new Error("First argument to arity must be a non-negative integer no greater than ten")}}function curryN(length,fn){return ofArity(length,function(){var n=arguments.length;var shortfall=length-n;var idx=n;while(--idx>=0){if(isPlaceholder(arguments[idx])){shortfall+=1}}if(shortfall<=0){return fn.apply(this,arguments)}else{var initialArgs=toArray(arguments);return curryN(shortfall,function(){var currentArgs=toArray(arguments);var combinedArgs=[];var idx=-1;while(++idx<n){var val=initialArgs[idx];combinedArgs[idx]=isPlaceholder(val)?currentArgs.shift():val}return fn.apply(this,combinedArgs.concat(currentArgs))})}})}return{stream:stream,isStream:isStream,transduce:transduce,merge:merge,reduce:scan,scan:scan,destroy:destroy,map:curryN(2,function(f,s){return map(s,f)}),curryN:curryN,_:_}})},{}],"flyd-scanmerge":[function(require,module,exports){var flyd=require("flyd");module.exports=flyd.curryN(2,function(pairs,acc){var streams=pairs.map(function(p){return p[0]});var fns=pairs.map(function(p){return p[1]});return flyd.stream(streams,function(self,changed){if(changed!==undefined){var idx=streams.indexOf(changed);acc=fns[idx](acc,changed())}return acc},true)})},{flyd:1}]},{},[]);var flyd=require("flyd");var scanMerge=require("flyd-scanmerge");var stream=flyd.stream(0);var createTodo=flyd.stream();var deleteTodo=flyd.stream();var todos=scanMerge([[createTodo,function(todos,todo){return todos.concat(todo)}],[deleteTodo,function(todos,id){return todos.filter(function(todo){return todo.id!==id})}]],[]);flyd.stream([todos],function(){console.log(todos())});createTodo({id:1,test:"baba"});createTodo({id:2,test:"hehe"});deleteTodo(1);

package.json

{
  "name": "requirebin-sketch",
  "version": "1.0.0",
  "dependencies": {
    "flyd": "0.1.1",
    "flyd-scanmerge": "0.0.1"
  }
}

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