eventemitter

I have in my component a EventEmitter but I can't compile because return this error: "Supplied parameters do not match any signature of call target" My component: @Output() addModel = new EventEmitter<any>(); saveModel($event, make, name) { this.addModel.emit(make, name); } If i delete one of parameters in this.addModel.emit() it work, but so, Can i pass 2 parameters and how, to my eventEmitter? I tried also with : @Output() addModel = new EventEmitter<any,any>(); but It doesn't work If you look at the EventEmitter API's emit method, it can only take single parameter of type T emit(value?: T)

I can write non-blocking I/O in Node.js very easily. It's what the entire library is set up for. But any computation done is blocking. Any message passing over event emitters are blocking . For example, emitting events are resolved immediately and are thus blocking: var e = new process.EventEmitter; e.on("foo", function() { console.log("event"); }); process.nextTick(function() { console.log("next tick"); }); setTimeout(function() { console.log("timeout"); }, 0); e.emit("foo"); > event > next tick > timeout Apart from wrapping calls in nextTick , how do I make code non-blocking? I want to do as

I'd like to have something like this work: var Events=require('events'), test=new Events.EventEmitter, scope={ prop:true }; test.on('event',function() { console.log(this.prop===true);//would log true }); test.emit.call(scope,'event'); But, unfortunately, the listener doesn't even get called. Is there any way to do this w/ EventEmitter? I could Function.bind to the listener, but, I'm really hoping EventEmitter has some special (or obvious ;) way to do this... Thanks for the help! No, because the this value in the listener is the event emitter object. However what you can do is this var scope =

New to Angular 2. I'm working on broadcast a event between same level component. Currently I know EventEmitter just can transfer a event to upper level component. I have checked this this link and know observable may be a way to solve my problem, but the sample in that url seems not work for me. Does anyone know how to use it(observable) for broadcast event or some other way to transfer event to same level components? You just need to create some service that will emit messages on which you can subscribe. It can be Observable from rxjs , EventEmitter from node.js , or anything else that

In angular docs there is a topic about listening for child events from parents. That's fine. But my purpose is something reverse!. In my app there is an 'admin.component' that holds the layout view of admin page (sidebar menu,task bar, status etc..). In this parent component I configured router system for changing the main view between other pages of administrator. The problem is for saving things after change, the user clicks on save button in task bar (that is placed in admin.component) and the child component must listen to that click event for doing save staff. Thierry Templier I think

I'm having a hard time finding much in the way of examples/guides for using observables in an Angular2 service. There is stuff for html templates binding with EventEmitter but that doesn't seem right for a service. One of the big driving themes is getting away from Promises in Angular2 but I can't seem to get the new syntax correct. What I'm Doing I have a FirebaseAuth Service that can be injected into other services or components. I have a function that does an async call to firebase, in my example to create a user I want to return a Observable(to replace the promise) that other services can