mobservable - npm Package Compare versions

Comparing version 0.5.1 to 0.5.2

dist/mobservable.js

@@ -36,2 +36,5 @@ /**
     };
+    mobservable.mobservableStatic.sideEffect = function (func, scope) {
+        return mobservable.mobservableStatic.computed(func, scope).observe(noop);
+    };
     mobservable.mobservableStatic.array = function array(values) {
@@ -879,2 +882,4 @@ return new ObservableArray(values);
     }
+    function noop() { }
+    ;
 })(mobservable || (mobservable = {}));
@@ -881,0 +886,0 @@ (function (root, factory) {

dist/mobservable.min.js

@@ -1,1 +0,1 @@
-var __extends=this.__extends||function(a,b){function c(){this.constructor=a}for(var d in b)b.hasOwnProperty(d)&&(a[d]=b[d]);c.prototype=b.prototype,a.prototype=new c},mobservable;!function(a){function b(b,c){return Array.isArray(b)?new l(b):"function"==typeof b?a.mobservableStatic.computed(b,c):a.mobservableStatic.primitive(b)}function c(a,b){if(!b.length)return[a,[]];if(!a.length)return[[],b];for(var c=[],d=[],e=0,f=0,g=a.length,h=!1,i=0,j=0,k=b.length,l=!1,m=!1;!m&&!h;){if(!l){if(g>e&&k>i&&a[e]===b[i]){if(e++,i++,e===g&&i===k)return[c,d];continue}f=e,j=i,l=!0}j+=1,f+=1,j>=k&&(m=!0),f>=g&&(h=!0),h||a[f]!==b[i]?m||b[j]!==a[e]||(d.push.apply(d,b.slice(i,j)),i=j+1,e++,l=!1):(c.push.apply(c,a.slice(e,f)),e=f+1,i++,l=!1)}return c.push.apply(c,a.slice(e)),d.push.apply(d,b.slice(i)),[c,d]}function d(a){console&&console.warn("[WARNING:mobservable] "+a)}function e(a){var b=!1;return function(){return b?void 0:(b=!0,a.apply(this,arguments))}}a.mobservableStatic=function(a,c){return b(a,c)},a.mobservableStatic.value=b,a.mobservableStatic.primitive=a.mobservableStatic.reference=function(a){return new g(a).createGetterSetter()},a.mobservableStatic.computed=function(a,b){return new h(a,b).createGetterSetter()},a.mobservableStatic.expr=function(a,b){if(0===j.trackingStack.length)throw new Error("mobservable.expr can only be used inside a computed observable. Probably mobservable.computed should be used instead of .expr");return new h(a,b).get()},a.mobservableStatic.array=function(a){return new l(a)},a.mobservableStatic.props=function o(b,o,c){switch(arguments.length){case 0:throw new Error("Not enough arguments");case 1:return a.mobservableStatic.props(b,b);case 2:for(var d in o)a.mobservableStatic.props(b,d,o[d]);break;case 3:var e=Array.isArray(c),f=a.mobservableStatic.value(c,b);Object.defineProperty(b,o,{get:e?function(){return f}:f,set:e?function(a){f.replace(a)}:f,enumerable:!0,configurable:!1})}return b},a.mobservableStatic.observable=function(b,c,d){var e=d?d.value:null;"function"==typeof e?(delete d.value,delete d.writable,d.get=function(){var b=this.key=a.mobservableStatic.computed(e,this);return b},d.set=function(){throw console.trace(),new Error("It is not allowed to reassign observable functions")}):Object.defineProperty(b,c,{configurable:!1,enumberable:!0,get:function(){return a.mobservableStatic.props(this,c,void 0),this[c]},set:function(b){a.mobservableStatic.props(this,c,b)}})},a.mobservableStatic.toPlainValue=function p(a){if(a){if(a instanceof Array)return a.slice();if(a instanceof g)return a.get();if("function"==typeof a&&a.impl){if(a.impl instanceof g)return a();if(a.impl instanceof l)return a().slice()}else if("object"==typeof a){var b={};for(var c in a)b[c]=p(a[c]);return b}}return a},a.mobservableStatic.observeProperty=function(b,c,f,i){if(void 0===i&&(i=!1),!b||!c||void 0===b[c])throw new Error("Object '"+b+"' has no property '"+c+"'.");if(!f||"function"!=typeof f)throw new Error("Third argument to mobservable.observeProperty should be a function");var j=b[c];if(j instanceof g||j instanceof l)return j.observe(f,i);if(j.impl&&(j.impl instanceof g||j instanceof l))return j.impl.observe(f,i);var k=new h(function(){return b[c]},b),m=k.observe(f,i);return a.mobservableStatic.debugLevel&&0===k.dependencyState.observing.length&&d("mobservable.observeProperty: property '"+c+"' of '"+b+" doesn't seem to be observable. Did you define it as observable?"),e(function(){m(),k.dependencyState.dispose()})},a.mobservableStatic.watch=function q(a,b){var q=new i(a,b);return[q.value,function(){return q.dispose()}]},a.mobservableStatic.batch=function(a){return n.batch(a)},a.mobservableStatic.debugLevel=0;var f,g=function(){function a(a){this._value=a,this.changeEvent=new m,this.dependencyState=new j(this)}return a.prototype.set=function(a){if(a!==this._value){var b=this._value;this.dependencyState.markStale(),this._value=a,this.dependencyState.markReady(!0),this.changeEvent.emit(a,b)}},a.prototype.get=function(){return this.dependencyState.notifyObserved(),this._value},a.prototype.observe=function(a,b){var c=this;void 0===b&&(b=!1),this.dependencyState.setRefCount(1),b&&a(this.get(),void 0);var d=this.changeEvent.on(a);return e(function(){c.dependencyState.setRefCount(-1),d()})},a.prototype.createGetterSetter=function(){var a=this,b=this,c=function(a){return arguments.length>0?void b.set(a):b.get()};return c.observe=function(b,c){return a.observe(b,c)},c.impl=this,c.toString=function(){return a.toString()},c},a.prototype.toString=function(){return"Observable["+this._value+"]"},a}(),h=function(b){function c(a,c){if(b.call(this,void 0),this.func=a,this.scope=c,this.isComputing=!1,this.hasError=!1,"function"!=typeof a)throw new Error("ComputedObservable requires a function")}return __extends(c,b),c.prototype.get=function(){if(this.isComputing)throw new Error("Cycle detected");var b=this.dependencyState;if(b.isSleeping?j.trackingStack.length>0?(b.wakeUp(),b.notifyObserved()):this.compute():b.notifyObserved(),b.hasCycle)throw new Error("Cycle detected");if(this.hasError)throw a.mobservableStatic.debugLevel&&(console.trace(),d(this+": rethrowing caught exception to observer: "+this._value+(this._value.cause||""))),this._value;return this._value},c.prototype.set=function(a){throw new Error(this.toString()+": A computed observable does not accept new values!")},c.prototype.compute=function(){var a;try{if(this.isComputing)throw new Error("Cycle detected");this.isComputing=!0,a=this.func.call(this.scope),this.hasError=!1}catch(b){this.hasError=!0,console.error(this+"Caught error during computation: ",b),b instanceof Error?a=b:(a=new Error("MobservableComputationError"),a.cause=b)}if(this.isComputing=!1,a!==this._value){var c=this._value;return this._value=a,this.changeEvent.emit(a,c),!0}return!1},c.prototype.toString=function(){return"ComputedObservable["+this.func.toString()+"]"},c}(g),i=function(){function a(a,b){this.expr=a,this.onInvalidate=b,this.dependencyState=new j(this),this.didEvaluate=!1,this.dependencyState.computeNextState()}return a.prototype.compute=function(){return this.didEvaluate?(this.dispose(),this.onInvalidate()):(this.didEvaluate=!0,this.value=this.expr()),!1},a.prototype.dispose=function(){this.dependencyState.dispose()},a}();!function(a){a[a.STALE=0]="STALE",a[a.PENDING=1]="PENDING",a[a.READY=2]="READY"}(f||(f={}));var j=function(){function b(a){this.owner=a,this.state=f.READY,this.isSleeping=!0,this.hasCycle=!1,this.observing=[],this.prevObserving=null,this.observers=[],this.dependencyChangeCount=0,this.dependencyStaleCount=0,this.isDisposed=!1,this.externalRefenceCount=0,this.isComputed=void 0!==a.compute}return b.prototype.setRefCount=function(a){var b=this.externalRefenceCount+=a;0===b?this.tryToSleep():b===a&&this.wakeUp()},b.prototype.addObserver=function(a){this.observers[this.observers.length]=a},b.prototype.removeObserver=function(a){var b=this.observers,c=b.indexOf(a);-1!==c&&(b.splice(c,1),0===b.length&&this.tryToSleep())},b.prototype.markStale=function(){this.state===f.READY&&(this.state=f.STALE,this.notifyObservers())},b.prototype.markReady=function(a){this.state!==f.READY&&(this.state=f.READY,this.notifyObservers(a))},b.prototype.notifyObservers=function(a){void 0===a&&(a=!1);for(var b=this.observers.slice(),c=b.length,d=0;c>d;d++)b[d].notifyStateChange(this,a)},b.prototype.tryToSleep=function(){if(!this.isSleeping&&this.isComputed&&0===this.observers.length&&0===this.externalRefenceCount){for(var a=0,b=this.observing.length;b>a;a++)this.observing[a].removeObserver(this);this.observing=[],this.isSleeping=!0}},b.prototype.wakeUp=function(){this.isSleeping&&this.isComputed&&(this.isSleeping=!1,this.state=f.PENDING,this.computeNextState())},b.prototype.notifyStateChange=function(a,b){var c=this;a.state===f.STALE?1===++this.dependencyStaleCount&&this.markStale():(b&&(this.dependencyChangeCount+=1),0===--this.dependencyStaleCount&&(this.state=f.PENDING,n.schedule(function(){c.dependencyChangeCount>0?c.computeNextState():c.markReady(!1),c.dependencyChangeCount=0})))},b.prototype.computeNextState=function(){this.trackDependencies();var a=this.owner.compute();this.bindDependencies(),this.markReady(a)},b.prototype.trackDependencies=function(){this.prevObserving=this.observing,b.trackingStack[b.trackingStack.length]=[]},b.prototype.bindDependencies=function(){this.observing=b.trackingStack.pop(),this.isComputed&&0===this.observing.length&&a.mobservableStatic.debugLevel>1&&!this.isDisposed&&(console.trace(),d("You have created a function that doesn't observe any values, did you forget to make its dependencies observable?"));var e=c(this.observing,this.prevObserving),f=e[0],g=e[1];this.prevObserving=null;for(var h=0,i=g.length;i>h;h++)g[h].removeObserver(this);this.hasCycle=!1;for(var h=0,i=f.length;i>h;h++)this.isComputed&&f[h].findCycle(this)?(this.hasCycle=!0,this.observing.splice(this.observing.indexOf(f[h]),1),f[h].hasCycle=!0):f[h].addObserver(this)},b.prototype.notifyObserved=function(){var a=b.trackingStack,c=a.length;if(c>0){var d=a[c-1],e=d.length;d[e-1]!==this&&d[e-2]!==this&&(d[e]=this)}},b.prototype.findCycle=function(a){var b=this.observing;if(-1!==b.indexOf(a))return!0;for(var c=b.length,d=0;c>d;d++)if(b[d].findCycle(a))return!0;return!1},b.prototype.dispose=function(){if(this.observers.length)throw new Error("Cannot dispose DNode; it is still being observed");if(this.observing)for(var a=this.observing.length,b=0;a>b;b++)this.observing[b].removeObserver(this);this.observing=null,this.isDisposed=!0},b.trackingStack=[],b}(),k=function(){function a(){}return a}();k.prototype=[];var l=function(b){function c(a){b.call(this),Object.defineProperties(this,{dependencyState:{enumerable:!1,value:new j(this)},_values:{enumerable:!1,value:a?a.slice():[]},changeEvent:{enumerable:!1,value:new m}}),a&&a.length&&this.updateLength(0,a.length)}return __extends(c,b),Object.defineProperty(c.prototype,"length",{get:function(){return this.dependencyState.notifyObserved(),this._values.length},set:function(a){if("number"!=typeof a||0>a)throw new Error("Out of range: "+a);var b=this._values.length;a!==b&&(a>b?this.spliceWithArray(b,0,new Array(a-b)):this.spliceWithArray(a,b-a))},enumerable:!0,configurable:!0}),c.prototype.updateLength=function(a,b){if(0>b)for(var d=a+b;a>d;d++)delete this[d];else if(b>0){a+b>c.OBSERVABLE_ARRAY_BUFFER_SIZE&&c.reserveArrayBuffer(a+b);for(var d=a,e=a+b;e>d;d++)Object.defineProperty(this,""+d,c.ENUMERABLE_PROPS[d])}},c.prototype.spliceWithArray=function(a,b,c){var d=this._values.length;if(!(void 0!==c&&0!==c.length||0!==b&&0!==d))return[];void 0===a?a=0:a>d?a=d:0>a&&(a=Math.max(0,d+a)),b=1===arguments.length?d-a:void 0===b||null===b?0:Math.max(0,Math.min(b,d-a)),void 0===c&&(c=[]);var e=c.length-b,f=(g=this._values).splice.apply(g,[a,b].concat(c));return this.updateLength(d,e),this.notifySplice(a,f,c),f;var g},c.prototype.notifyChildUpdate=function(a,b){this.notifyChanged(),this.changeEvent.emit({object:this,type:"update",index:a,oldValue:b})},c.prototype.notifySplice=function(a,b,c){(0!==b.length||0!==c.length)&&(this.notifyChanged(),this.changeEvent.emit({object:this,type:"splice",index:a,addedCount:c.length,removed:b}))},c.prototype.notifyChanged=function(){this.dependencyState.markStale(),this.dependencyState.markReady(!0)},c.prototype.observe=function(a,b){return void 0===b&&(b=!1),b&&a({object:this,type:"splice",index:0,addedCount:this._values.length,removed:[]}),this.changeEvent.on(a)},c.prototype.clear=function(){return this.splice(0)},c.prototype.replace=function(a){return this.spliceWithArray(0,this._values.length,a)},c.prototype.values=function(){return this.dependencyState.notifyObserved(),this._values.slice()},c.prototype.toJSON=function(){return this.dependencyState.notifyObserved(),this._values.slice()},c.prototype.clone=function(){return this.dependencyState.notifyObserved(),new c(this._values)},c.prototype.find=function(a,b,c){void 0===c&&(c=0),this.dependencyState.notifyObserved();for(var d=this._values,e=d.length,f=c;e>f;f++)if(a.call(b,d[f],f,this))return d[f];return null},c.prototype.splice=function(a,b){for(var c=[],d=2;d<arguments.length;d++)c[d-2]=arguments[d];switch(this.sideEffectWarning("splice"),arguments.length){case 0:return[];case 1:return this.spliceWithArray(a);case 2:return this.spliceWithArray(a,b)}return this.spliceWithArray(a,b,c)},c.prototype.push=function(){for(var a=[],b=0;b<arguments.length;b++)a[b-0]=arguments[b];return this.sideEffectWarning("push"),this.spliceWithArray(this._values.length,0,a),this._values.length},c.prototype.pop=function(){return this.sideEffectWarning("pop"),this.splice(Math.max(this._values.length-1,0),1)[0]},c.prototype.shift=function(){return this.sideEffectWarning("shift"),this.splice(0,1)[0]},c.prototype.unshift=function(){for(var a=[],b=0;b<arguments.length;b++)a[b-0]=arguments[b];return this.sideEffectWarning("unshift"),this.spliceWithArray(0,0,a),this._values.length},c.prototype.reverse=function(){return this.sideEffectWarning("reverse"),this.replace(this._values.reverse())},c.prototype.sort=function(a){return this.sideEffectWarning("sort"),this.replace(this._values.sort.apply(this._values,arguments))},c.prototype.remove=function(a){this.sideEffectWarning("remove");var b=this._values.indexOf(a);return b>-1?(this.splice(b,1),!0):!1},c.prototype.toString=function(){return this.wrapReadFunction("toString",arguments)},c.prototype.toLocaleString=function(){return this.wrapReadFunction("toLocaleString",arguments)},c.prototype.concat=function(){return this.wrapReadFunction("concat",arguments)},c.prototype.join=function(a){return this.wrapReadFunction("join",arguments)},c.prototype.slice=function(a,b){return this.wrapReadFunction("slice",arguments)},c.prototype.indexOf=function(a,b){return this.wrapReadFunction("indexOf",arguments)},c.prototype.lastIndexOf=function(a,b){return this.wrapReadFunction("lastIndexOf",arguments)},c.prototype.every=function(a,b){return this.wrapReadFunction("every",arguments)},c.prototype.some=function(a,b){return this.wrapReadFunction("some",arguments)},c.prototype.forEach=function(a,b){return this.wrapReadFunction("forEach",arguments)},c.prototype.map=function(a,b){return this.wrapReadFunction("map",arguments)},c.prototype.filter=function(a,b){return this.wrapReadFunction("filter",arguments)},c.prototype.reduce=function(a,b){return this.wrapReadFunction("reduce",arguments)},c.prototype.reduceRight=function(a,b){return this.wrapReadFunction("reduceRight",arguments)},c.prototype.wrapReadFunction=function(a,b){var d=Array.prototype[a];return(c.prototype[a]=function(){return this.dependencyState.notifyObserved(),d.apply(this._values,arguments)}).apply(this,b)},c.prototype.sideEffectWarning=function(b){a.mobservableStatic.debugLevel>0&&j.trackingStack.length>0&&d("[Mobservable.Array] The method array."+b+" should probably not be used inside observable functions since it has side-effects")},c.createArrayBufferItem=function(a){var b={enumerable:!1,configurable:!1,set:function(b){if(a<this._values.length){var c=this._values[a];c!==b&&(this._values[a]=b,this.notifyChildUpdate(a,c))}else{if(a!==this._values.length)throw new Error("ObservableArray: Index out of bounds, "+a+" is larger than "+this.values.length);this.push(b)}},get:function(){return a<this._values.length?(this.dependencyState.notifyObserved(),this._values[a]):void 0}};Object.defineProperty(c.prototype,""+a,b),b.enumerable=!0,b.configurable=!0,c.ENUMERABLE_PROPS[a]=b},c.reserveArrayBuffer=function(a){for(var b=c.OBSERVABLE_ARRAY_BUFFER_SIZE;a>b;b++)c.createArrayBufferItem(b);c.OBSERVABLE_ARRAY_BUFFER_SIZE=a},c.OBSERVABLE_ARRAY_BUFFER_SIZE=0,c.ENUMERABLE_PROPS=[],c}(k);l.reserveArrayBuffer(1e3);var m=function(){function a(){this.listeners=[]}return a.prototype.emit=function(){var a=this.listeners.slice(),b=a.length;switch(arguments.length){case 0:for(var c=0;b>c;c++)a[c]();break;case 1:for(var d=arguments[0],c=0;b>c;c++)a[c](d);break;default:for(var c=0;b>c;c++)a[c].apply(null,arguments)}},a.prototype.on=function(a){var b=this;return this.listeners.push(a),e(function(){var c=b.listeners.indexOf(a);-1!==c&&b.listeners.splice(c,1)})},a.prototype.once=function(a){var b=this.on(function(){b(),a.apply(this,arguments)});return b},a}();a.mobservableStatic.SimpleEventEmitter=m;var n=function(){function a(){}return a.schedule=function(b){a.inBatch<1?b():a.tasks[a.tasks.length]=b},a.runPostBatchActions=function(){for(var b=0;a.tasks.length;)try{for(;b<a.tasks.length;b++)a.tasks[b]();a.tasks=[]}catch(c){console.error("Failed to run scheduled action, the action has been dropped from the queue: "+c,c),a.tasks.splice(0,b+1)}},a.batch=function(b){a.inBatch+=1;try{return b()}finally{0===--a.inBatch&&(a.inBatch+=1,a.runPostBatchActions(),a.inBatch-=1)}},a.inBatch=0,a.tasks=[],a}();a.mobservableStatic.ObserverMixin={componentWillMount:function(){var b=this.render;this.render=function(){var c=this;this._watchDisposer&&this._watchDisposer();var e=a.mobservableStatic.watch(function(){return b.call(c)},function(){c.isMounted()?c.forceUpdate():a.mobservableStatic.debugLevel&&d("Rendering was triggered for unmounted component. Please check the lifecycle of the components")}),f=e[0],g=e[1];return this._watchDisposer=g,f}},componentWillUnmount:function(){this._watchDisposer&&this._watchDisposer()},shouldComponentUpdate:function(a,b){if(this.state!==b)return!0;var c,d=Object.keys(this.props);if(d.length!==Object.keys(a).length)return!0;for(var e=d.length-1;c=d[e];e--)if(a[c]!==this.props[c])return!0;return!1}},a.mobservableStatic.ObservingComponent=function(b){var c=b.componentWillMount,d=b.componentWillUnmount;return b.prototype.componentWillMount=function(){return a.mobservableStatic.ObserverMixin.componentWillMount.apply(this,arguments),c&&c.apply(this,arguments)},b.prototype.componentWillUnmount=function(){return a.mobservableStatic.ObserverMixin.componentWillUnmount.apply(this,arguments),d&&d.apply(this,arguments)},b.prototype.shouldComponentUpdate=a.mobservableStatic.ObserverMixin.shouldComponentUpdate,b},a.mobservableStatic.quickDiff=c,a.mobservableStatic.stackDepth=function(){return j.trackingStack.length}}(mobservable||(mobservable={})),function(a,b){"function"==typeof define&&define.amd?define("mobservable",[],function(){return b()}):"object"==typeof exports?module.exports=b():a.mobservable=b()}(this,function(){return mobservable.mobservableStatic});
+var __extends=this.__extends||function(a,b){function c(){this.constructor=a}for(var d in b)b.hasOwnProperty(d)&&(a[d]=b[d]);c.prototype=b.prototype,a.prototype=new c},mobservable;!function(a){function b(b,c){return Array.isArray(b)?new m(b):"function"==typeof b?a.mobservableStatic.computed(b,c):a.mobservableStatic.primitive(b)}function c(a,b){if(!b.length)return[a,[]];if(!a.length)return[[],b];for(var c=[],d=[],e=0,f=0,g=a.length,h=!1,i=0,j=0,k=b.length,l=!1,m=!1;!m&&!h;){if(!l){if(g>e&&k>i&&a[e]===b[i]){if(e++,i++,e===g&&i===k)return[c,d];continue}f=e,j=i,l=!0}j+=1,f+=1,j>=k&&(m=!0),f>=g&&(h=!0),h||a[f]!==b[i]?m||b[j]!==a[e]||(d.push.apply(d,b.slice(i,j)),i=j+1,e++,l=!1):(c.push.apply(c,a.slice(e,f)),e=f+1,i++,l=!1)}return c.push.apply(c,a.slice(e)),d.push.apply(d,b.slice(i)),[c,d]}function d(a){console&&console.warn("[WARNING:mobservable] "+a)}function e(a){var b=!1;return function(){return b?void 0:(b=!0,a.apply(this,arguments))}}function f(){}a.mobservableStatic=function(a,c){return b(a,c)},a.mobservableStatic.value=b,a.mobservableStatic.primitive=a.mobservableStatic.reference=function(a){return new h(a).createGetterSetter()},a.mobservableStatic.computed=function(a,b){return new i(a,b).createGetterSetter()},a.mobservableStatic.expr=function(a,b){if(0===k.trackingStack.length)throw new Error("mobservable.expr can only be used inside a computed observable. Probably mobservable.computed should be used instead of .expr");return new i(a,b).get()},a.mobservableStatic.sideEffect=function(b,c){return a.mobservableStatic.computed(b,c).observe(f)},a.mobservableStatic.array=function(a){return new m(a)},a.mobservableStatic.props=function p(b,p,c){switch(arguments.length){case 0:throw new Error("Not enough arguments");case 1:return a.mobservableStatic.props(b,b);case 2:for(var d in p)a.mobservableStatic.props(b,d,p[d]);break;case 3:var e=Array.isArray(c),f=a.mobservableStatic.value(c,b);Object.defineProperty(b,p,{get:e?function(){return f}:f,set:e?function(a){f.replace(a)}:f,enumerable:!0,configurable:!1})}return b},a.mobservableStatic.observable=function(b,c,d){var e=d?d.value:null;"function"==typeof e?(delete d.value,delete d.writable,d.get=function(){var b=this.key=a.mobservableStatic.computed(e,this);return b},d.set=function(){throw console.trace(),new Error("It is not allowed to reassign observable functions")}):Object.defineProperty(b,c,{configurable:!1,enumberable:!0,get:function(){return a.mobservableStatic.props(this,c,void 0),this[c]},set:function(b){a.mobservableStatic.props(this,c,b)}})},a.mobservableStatic.toPlainValue=function q(a){if(a){if(a instanceof Array)return a.slice();if(a instanceof h)return a.get();if("function"==typeof a&&a.impl){if(a.impl instanceof h)return a();if(a.impl instanceof m)return a().slice()}else if("object"==typeof a){var b={};for(var c in a)b[c]=q(a[c]);return b}}return a},a.mobservableStatic.observeProperty=function(b,c,f,g){if(void 0===g&&(g=!1),!b||!c||void 0===b[c])throw new Error("Object '"+b+"' has no property '"+c+"'.");if(!f||"function"!=typeof f)throw new Error("Third argument to mobservable.observeProperty should be a function");var j=b[c];if(j instanceof h||j instanceof m)return j.observe(f,g);if(j.impl&&(j.impl instanceof h||j instanceof m))return j.impl.observe(f,g);var k=new i(function(){return b[c]},b),l=k.observe(f,g);return a.mobservableStatic.debugLevel&&0===k.dependencyState.observing.length&&d("mobservable.observeProperty: property '"+c+"' of '"+b+" doesn't seem to be observable. Did you define it as observable?"),e(function(){l(),k.dependencyState.dispose()})},a.mobservableStatic.watch=function r(a,b){var r=new j(a,b);return[r.value,function(){return r.dispose()}]},a.mobservableStatic.batch=function(a){return o.batch(a)},a.mobservableStatic.debugLevel=0;var g,h=function(){function a(a){this._value=a,this.changeEvent=new n,this.dependencyState=new k(this)}return a.prototype.set=function(a){if(a!==this._value){var b=this._value;this.dependencyState.markStale(),this._value=a,this.dependencyState.markReady(!0),this.changeEvent.emit(a,b)}},a.prototype.get=function(){return this.dependencyState.notifyObserved(),this._value},a.prototype.observe=function(a,b){var c=this;void 0===b&&(b=!1),this.dependencyState.setRefCount(1),b&&a(this.get(),void 0);var d=this.changeEvent.on(a);return e(function(){c.dependencyState.setRefCount(-1),d()})},a.prototype.createGetterSetter=function(){var a=this,b=this,c=function(a){return arguments.length>0?void b.set(a):b.get()};return c.observe=function(b,c){return a.observe(b,c)},c.impl=this,c.toString=function(){return a.toString()},c},a.prototype.toString=function(){return"Observable["+this._value+"]"},a}(),i=function(b){function c(a,c){if(b.call(this,void 0),this.func=a,this.scope=c,this.isComputing=!1,this.hasError=!1,"function"!=typeof a)throw new Error("ComputedObservable requires a function")}return __extends(c,b),c.prototype.get=function(){if(this.isComputing)throw new Error("Cycle detected");var b=this.dependencyState;if(b.isSleeping?k.trackingStack.length>0?(b.wakeUp(),b.notifyObserved()):this.compute():b.notifyObserved(),b.hasCycle)throw new Error("Cycle detected");if(this.hasError)throw a.mobservableStatic.debugLevel&&(console.trace(),d(this+": rethrowing caught exception to observer: "+this._value+(this._value.cause||""))),this._value;return this._value},c.prototype.set=function(a){throw new Error(this.toString()+": A computed observable does not accept new values!")},c.prototype.compute=function(){var a;try{if(this.isComputing)throw new Error("Cycle detected");this.isComputing=!0,a=this.func.call(this.scope),this.hasError=!1}catch(b){this.hasError=!0,console.error(this+"Caught error during computation: ",b),b instanceof Error?a=b:(a=new Error("MobservableComputationError"),a.cause=b)}if(this.isComputing=!1,a!==this._value){var c=this._value;return this._value=a,this.changeEvent.emit(a,c),!0}return!1},c.prototype.toString=function(){return"ComputedObservable["+this.func.toString()+"]"},c}(h),j=function(){function a(a,b){this.expr=a,this.onInvalidate=b,this.dependencyState=new k(this),this.didEvaluate=!1,this.dependencyState.computeNextState()}return a.prototype.compute=function(){return this.didEvaluate?(this.dispose(),this.onInvalidate()):(this.didEvaluate=!0,this.value=this.expr()),!1},a.prototype.dispose=function(){this.dependencyState.dispose()},a}();!function(a){a[a.STALE=0]="STALE",a[a.PENDING=1]="PENDING",a[a.READY=2]="READY"}(g||(g={}));var k=function(){function b(a){this.owner=a,this.state=g.READY,this.isSleeping=!0,this.hasCycle=!1,this.observing=[],this.prevObserving=null,this.observers=[],this.dependencyChangeCount=0,this.dependencyStaleCount=0,this.isDisposed=!1,this.externalRefenceCount=0,this.isComputed=void 0!==a.compute}return b.prototype.setRefCount=function(a){var b=this.externalRefenceCount+=a;0===b?this.tryToSleep():b===a&&this.wakeUp()},b.prototype.addObserver=function(a){this.observers[this.observers.length]=a},b.prototype.removeObserver=function(a){var b=this.observers,c=b.indexOf(a);-1!==c&&(b.splice(c,1),0===b.length&&this.tryToSleep())},b.prototype.markStale=function(){this.state===g.READY&&(this.state=g.STALE,this.notifyObservers())},b.prototype.markReady=function(a){this.state!==g.READY&&(this.state=g.READY,this.notifyObservers(a))},b.prototype.notifyObservers=function(a){void 0===a&&(a=!1);for(var b=this.observers.slice(),c=b.length,d=0;c>d;d++)b[d].notifyStateChange(this,a)},b.prototype.tryToSleep=function(){if(!this.isSleeping&&this.isComputed&&0===this.observers.length&&0===this.externalRefenceCount){for(var a=0,b=this.observing.length;b>a;a++)this.observing[a].removeObserver(this);this.observing=[],this.isSleeping=!0}},b.prototype.wakeUp=function(){this.isSleeping&&this.isComputed&&(this.isSleeping=!1,this.state=g.PENDING,this.computeNextState())},b.prototype.notifyStateChange=function(a,b){var c=this;a.state===g.STALE?1===++this.dependencyStaleCount&&this.markStale():(b&&(this.dependencyChangeCount+=1),0===--this.dependencyStaleCount&&(this.state=g.PENDING,o.schedule(function(){c.dependencyChangeCount>0?c.computeNextState():c.markReady(!1),c.dependencyChangeCount=0})))},b.prototype.computeNextState=function(){this.trackDependencies();var a=this.owner.compute();this.bindDependencies(),this.markReady(a)},b.prototype.trackDependencies=function(){this.prevObserving=this.observing,b.trackingStack[b.trackingStack.length]=[]},b.prototype.bindDependencies=function(){this.observing=b.trackingStack.pop(),this.isComputed&&0===this.observing.length&&a.mobservableStatic.debugLevel>1&&!this.isDisposed&&(console.trace(),d("You have created a function that doesn't observe any values, did you forget to make its dependencies observable?"));var e=c(this.observing,this.prevObserving),f=e[0],g=e[1];this.prevObserving=null;for(var h=0,i=g.length;i>h;h++)g[h].removeObserver(this);this.hasCycle=!1;for(var h=0,i=f.length;i>h;h++)this.isComputed&&f[h].findCycle(this)?(this.hasCycle=!0,this.observing.splice(this.observing.indexOf(f[h]),1),f[h].hasCycle=!0):f[h].addObserver(this)},b.prototype.notifyObserved=function(){var a=b.trackingStack,c=a.length;if(c>0){var d=a[c-1],e=d.length;d[e-1]!==this&&d[e-2]!==this&&(d[e]=this)}},b.prototype.findCycle=function(a){var b=this.observing;if(-1!==b.indexOf(a))return!0;for(var c=b.length,d=0;c>d;d++)if(b[d].findCycle(a))return!0;return!1},b.prototype.dispose=function(){if(this.observers.length)throw new Error("Cannot dispose DNode; it is still being observed");if(this.observing)for(var a=this.observing.length,b=0;a>b;b++)this.observing[b].removeObserver(this);this.observing=null,this.isDisposed=!0},b.trackingStack=[],b}(),l=function(){function a(){}return a}();l.prototype=[];var m=function(b){function c(a){b.call(this),Object.defineProperties(this,{dependencyState:{enumerable:!1,value:new k(this)},_values:{enumerable:!1,value:a?a.slice():[]},changeEvent:{enumerable:!1,value:new n}}),a&&a.length&&this.updateLength(0,a.length)}return __extends(c,b),Object.defineProperty(c.prototype,"length",{get:function(){return this.dependencyState.notifyObserved(),this._values.length},set:function(a){if("number"!=typeof a||0>a)throw new Error("Out of range: "+a);var b=this._values.length;a!==b&&(a>b?this.spliceWithArray(b,0,new Array(a-b)):this.spliceWithArray(a,b-a))},enumerable:!0,configurable:!0}),c.prototype.updateLength=function(a,b){if(0>b)for(var d=a+b;a>d;d++)delete this[d];else if(b>0){a+b>c.OBSERVABLE_ARRAY_BUFFER_SIZE&&c.reserveArrayBuffer(a+b);for(var d=a,e=a+b;e>d;d++)Object.defineProperty(this,""+d,c.ENUMERABLE_PROPS[d])}},c.prototype.spliceWithArray=function(a,b,c){var d=this._values.length;if(!(void 0!==c&&0!==c.length||0!==b&&0!==d))return[];void 0===a?a=0:a>d?a=d:0>a&&(a=Math.max(0,d+a)),b=1===arguments.length?d-a:void 0===b||null===b?0:Math.max(0,Math.min(b,d-a)),void 0===c&&(c=[]);var e=c.length-b,f=(g=this._values).splice.apply(g,[a,b].concat(c));return this.updateLength(d,e),this.notifySplice(a,f,c),f;var g},c.prototype.notifyChildUpdate=function(a,b){this.notifyChanged(),this.changeEvent.emit({object:this,type:"update",index:a,oldValue:b})},c.prototype.notifySplice=function(a,b,c){(0!==b.length||0!==c.length)&&(this.notifyChanged(),this.changeEvent.emit({object:this,type:"splice",index:a,addedCount:c.length,removed:b}))},c.prototype.notifyChanged=function(){this.dependencyState.markStale(),this.dependencyState.markReady(!0)},c.prototype.observe=function(a,b){return void 0===b&&(b=!1),b&&a({object:this,type:"splice",index:0,addedCount:this._values.length,removed:[]}),this.changeEvent.on(a)},c.prototype.clear=function(){return this.splice(0)},c.prototype.replace=function(a){return this.spliceWithArray(0,this._values.length,a)},c.prototype.values=function(){return this.dependencyState.notifyObserved(),this._values.slice()},c.prototype.toJSON=function(){return this.dependencyState.notifyObserved(),this._values.slice()},c.prototype.clone=function(){return this.dependencyState.notifyObserved(),new c(this._values)},c.prototype.find=function(a,b,c){void 0===c&&(c=0),this.dependencyState.notifyObserved();for(var d=this._values,e=d.length,f=c;e>f;f++)if(a.call(b,d[f],f,this))return d[f];return null},c.prototype.splice=function(a,b){for(var c=[],d=2;d<arguments.length;d++)c[d-2]=arguments[d];switch(this.sideEffectWarning("splice"),arguments.length){case 0:return[];case 1:return this.spliceWithArray(a);case 2:return this.spliceWithArray(a,b)}return this.spliceWithArray(a,b,c)},c.prototype.push=function(){for(var a=[],b=0;b<arguments.length;b++)a[b-0]=arguments[b];return this.sideEffectWarning("push"),this.spliceWithArray(this._values.length,0,a),this._values.length},c.prototype.pop=function(){return this.sideEffectWarning("pop"),this.splice(Math.max(this._values.length-1,0),1)[0]},c.prototype.shift=function(){return this.sideEffectWarning("shift"),this.splice(0,1)[0]},c.prototype.unshift=function(){for(var a=[],b=0;b<arguments.length;b++)a[b-0]=arguments[b];return this.sideEffectWarning("unshift"),this.spliceWithArray(0,0,a),this._values.length},c.prototype.reverse=function(){return this.sideEffectWarning("reverse"),this.replace(this._values.reverse())},c.prototype.sort=function(a){return this.sideEffectWarning("sort"),this.replace(this._values.sort.apply(this._values,arguments))},c.prototype.remove=function(a){this.sideEffectWarning("remove");var b=this._values.indexOf(a);return b>-1?(this.splice(b,1),!0):!1},c.prototype.toString=function(){return this.wrapReadFunction("toString",arguments)},c.prototype.toLocaleString=function(){return this.wrapReadFunction("toLocaleString",arguments)},c.prototype.concat=function(){return this.wrapReadFunction("concat",arguments)},c.prototype.join=function(a){return this.wrapReadFunction("join",arguments)},c.prototype.slice=function(a,b){return this.wrapReadFunction("slice",arguments)},c.prototype.indexOf=function(a,b){return this.wrapReadFunction("indexOf",arguments)},c.prototype.lastIndexOf=function(a,b){return this.wrapReadFunction("lastIndexOf",arguments)},c.prototype.every=function(a,b){return this.wrapReadFunction("every",arguments)},c.prototype.some=function(a,b){return this.wrapReadFunction("some",arguments)},c.prototype.forEach=function(a,b){return this.wrapReadFunction("forEach",arguments)},c.prototype.map=function(a,b){return this.wrapReadFunction("map",arguments)},c.prototype.filter=function(a,b){return this.wrapReadFunction("filter",arguments)},c.prototype.reduce=function(a,b){return this.wrapReadFunction("reduce",arguments)},c.prototype.reduceRight=function(a,b){return this.wrapReadFunction("reduceRight",arguments)},c.prototype.wrapReadFunction=function(a,b){var d=Array.prototype[a];return(c.prototype[a]=function(){return this.dependencyState.notifyObserved(),d.apply(this._values,arguments)}).apply(this,b)},c.prototype.sideEffectWarning=function(b){a.mobservableStatic.debugLevel>0&&k.trackingStack.length>0&&d("[Mobservable.Array] The method array."+b+" should probably not be used inside observable functions since it has side-effects")},c.createArrayBufferItem=function(a){var b={enumerable:!1,configurable:!1,set:function(b){if(a<this._values.length){var c=this._values[a];c!==b&&(this._values[a]=b,this.notifyChildUpdate(a,c))}else{if(a!==this._values.length)throw new Error("ObservableArray: Index out of bounds, "+a+" is larger than "+this.values.length);this.push(b)}},get:function(){return a<this._values.length?(this.dependencyState.notifyObserved(),this._values[a]):void 0}};Object.defineProperty(c.prototype,""+a,b),b.enumerable=!0,b.configurable=!0,c.ENUMERABLE_PROPS[a]=b},c.reserveArrayBuffer=function(a){for(var b=c.OBSERVABLE_ARRAY_BUFFER_SIZE;a>b;b++)c.createArrayBufferItem(b);c.OBSERVABLE_ARRAY_BUFFER_SIZE=a},c.OBSERVABLE_ARRAY_BUFFER_SIZE=0,c.ENUMERABLE_PROPS=[],c}(l);m.reserveArrayBuffer(1e3);var n=function(){function a(){this.listeners=[]}return a.prototype.emit=function(){var a=this.listeners.slice(),b=a.length;switch(arguments.length){case 0:for(var c=0;b>c;c++)a[c]();break;case 1:for(var d=arguments[0],c=0;b>c;c++)a[c](d);break;default:for(var c=0;b>c;c++)a[c].apply(null,arguments)}},a.prototype.on=function(a){var b=this;return this.listeners.push(a),e(function(){var c=b.listeners.indexOf(a);-1!==c&&b.listeners.splice(c,1)})},a.prototype.once=function(a){var b=this.on(function(){b(),a.apply(this,arguments)});return b},a}();a.mobservableStatic.SimpleEventEmitter=n;var o=function(){function a(){}return a.schedule=function(b){a.inBatch<1?b():a.tasks[a.tasks.length]=b},a.runPostBatchActions=function(){for(var b=0;a.tasks.length;)try{for(;b<a.tasks.length;b++)a.tasks[b]();a.tasks=[]}catch(c){console.error("Failed to run scheduled action, the action has been dropped from the queue: "+c,c),a.tasks.splice(0,b+1)}},a.batch=function(b){a.inBatch+=1;try{return b()}finally{0===--a.inBatch&&(a.inBatch+=1,a.runPostBatchActions(),a.inBatch-=1)}},a.inBatch=0,a.tasks=[],a}();a.mobservableStatic.ObserverMixin={componentWillMount:function(){var b=this.render;this.render=function(){var c=this;this._watchDisposer&&this._watchDisposer();var e=a.mobservableStatic.watch(function(){return b.call(c)},function(){c.isMounted()?c.forceUpdate():a.mobservableStatic.debugLevel&&d("Rendering was triggered for unmounted component. Please check the lifecycle of the components")}),f=e[0],g=e[1];return this._watchDisposer=g,f}},componentWillUnmount:function(){this._watchDisposer&&this._watchDisposer()},shouldComponentUpdate:function(a,b){if(this.state!==b)return!0;var c,d=Object.keys(this.props);if(d.length!==Object.keys(a).length)return!0;for(var e=d.length-1;c=d[e];e--)if(a[c]!==this.props[c])return!0;return!1}},a.mobservableStatic.ObservingComponent=function(b){var c=b.componentWillMount,d=b.componentWillUnmount;return b.prototype.componentWillMount=function(){return a.mobservableStatic.ObserverMixin.componentWillMount.apply(this,arguments),c&&c.apply(this,arguments)},b.prototype.componentWillUnmount=function(){return a.mobservableStatic.ObserverMixin.componentWillUnmount.apply(this,arguments),d&&d.apply(this,arguments)},b.prototype.shouldComponentUpdate=a.mobservableStatic.ObserverMixin.shouldComponentUpdate,b},a.mobservableStatic.quickDiff=c,a.mobservableStatic.stackDepth=function(){return k.trackingStack.length}}(mobservable||(mobservable={})),function(a,b){"function"==typeof define&&define.amd?define("mobservable",[],function(){return b()}):"object"==typeof exports?module.exports=b():a.mobservable=b()}(this,function(){return mobservable.mobservableStatic});

mobservable.d.ts

@@ -21,2 +21,3 @@ /** GENERATED FILE */
     expr<T>(expr:()=>T,scope?):T;
+    sideEffect(func:Mobservable.Lambda,scope?):Mobservable.Lambda;
 
@@ -23,0 +24,0 @@ // create observable properties

mobservable.ts

@@ -20,2 +20,3 @@ /**
     expr<T>(expr:()=>T,scope?):T;
+    sideEffect(func:Mobservable.Lambda,scope?):Mobservable.Lambda;
 
@@ -135,2 +136,6 @@ // create observable properties
 
+mobservableStatic.sideEffect = function(func:Lambda, scope?):Lambda {
+    return mobservableStatic.computed(func, scope).observe(noop);
+}
+
 mobservableStatic.array = function array<T>(values?:T[]): ObservableArray<T> {
@@ -1137,2 +1142,4 @@ return new ObservableArray(values);
 
+function noop(){};
+
 } // end of module
@@ -1139,0 +1146,0 @@

package.json

 {
     "name": "mobservable",
-    "version": "0.5.1",
+    "version": "0.5.2",
     "description": "Changes are coming! Small library for creating observable properties, arrays and functions",
@@ -5,0 +5,0 @@ "main": "dist/mobservable.js",

README.md

@@ -15,2 +15,3 @@ # MOBservable
 
+* [Slack group](https://mobservable.slack.com)
 * [Blog post: combining React with MOBservable](https://www.mendix.com/tech-blog/making-react-reactive-pursuit-high-performing-easily-maintainable-react-apps/) 
@@ -313,3 +314,3 @@ * [Examples](#examples)
 
-`mobservable.expr<T>(expr:()=>T,scope?):T;`
+`mobservable.expr<T>(expr : ()=>T, scope?) : T`
 
@@ -320,2 +321,24 @@ This function is simply sugar for `mobservable.computed(expr, scope)();`.
 
+### mobservable.sideEffect
+`mobservable.sideEffect(func:() => void, scope?): ()=>void`
+
+Use this function if you have a function which should produce side effects, even if it is not observed itself.
+This is useful for logging, storage backend interaction etc.
+Use it whenever you need to transfer observable data to things that don't know how to observe. 
+`sideEffect` returns a function that can be used to prevent the sideEffect from being triggered in the future.
+
+```javascript
+var x = mobservable(3);
+var x2 = mobservable(function() {
+    return x() * 2;
+});
+
+mobservable.sideEffect(function() {
+    storeInDatabase(x2());
+    console.log(x2());
+});
+x(7);
+// prints 14
+```
+
 ### mobservable.array
@@ -322,0 +345,0 @@

No alert changes

Improved metrics

Total package byte prevSize

149515

increased by7.08%

Number of package files

11

increased by22.22%

Lines of code

2002

increased by0.55%

Number of lines in readme file

680

increased by3.5%

No dependency changes