An event emitter is a platform for triggering and listening for events.
An event emitter is a platform for triggering and listening for events. Different libraries offer different implementations and for different purposes.
Questions tagged [eventemitter]
960 questions
0
votes
1 answer
Angular2 eventEmitter, parent wont catch it
Have used quite some time now, trying to find out why the parent does not receive the event and call the function.
Have a parent app (called AppComponent) and the child component (called HomeComponent)
HomeComponent.ts
@Component({
selector:…
Mikkel
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0 answers
viewComponentRef and component factory used for rendering controls in angular 2 reference
I created some custom control and render a json of form attributes using the component factory and view resolver.
Same approach as below.
Query.Add instead of Dynamic Component Loader (loadintolocation)
In custom controls I am emitting a…
sandeep
- 1
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1 answer
Angular2 EventEmitter does not complete after invoking .error
I have an EventEmitter that inform a user that notify a component that the state of the application has changed.
This event inform whether a user who is trying to authenticate has been successful.
private emitAuthStatus(success: boolean) {
if…
Linvi
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1 answer
EventEmitter Ignore next listeners if conditions are true
I'm creating a Telegram bot which uses node-telegram-bot-api package. That package uses EventEmitter3 for emitting events.
I have a listener that executes before all other listeners:
Bot.prependListener( 'message', ( msg ) =>
if ( CHECK…
Ehsaan
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3 answers
Angular 2 and EventEmitter
Hello I've started studying Angular 2.
Maybe someone could help me with my question about EventEmitter and outputs in Angular 2
I have 3 components.
AppComponent is parent of CountriesListComponent.
CountriesListComponent is parent of…
Egor
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0 answers
NodeJS EventEmiter not emiting the event
I just wonder if the following code is supposed to work:
// my-class.js
const EventEmmiter = require('events')
class MyClass extends EventEmmiter {
constructor () {
super()
}
trigger () {
console.log('trigger')
…
Andrei Stalbe
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1 answer
Eventemitter and nexttick in nodejs
I'm confused about Eventemitter. I write a code but that does not work properly. Why the below code does not work :
const EventEmitter = require('events');
const util = require('util');
function MyEmitter() {
EventEmitter.call(this);
…
metis
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votes
1 answer
Derived node.js EventEmitter will call the wrong listener when in a named object property
I've been working on creating my own home automation hub using a handful of node.js packages (Express, mqtt, socket.io) with a MongoDB database and Angular running in the client. This project is the first time I've worked with any JavaScript, so…
Josh Gordon
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- 1
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votes
1 answer
Node.JS: Event Emmiter
function Auth() {
console.log('Created!')
}
Auth.prototype.authenticate = function () {
// do stuff
this.emit('completed')
}
util.inherits(Auth, EventEmitter)
How can i call Auth.emit('someEvent') in other functions? For example:
function…
Src
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1 answer
nodejs Websocket Server - possible EventEmitter memory leak detected
I'm relatively new to node and im struggling to find the answers!
I've created a very basic node script that is used to connect to a rs232 serial device, at the same time it serves as a websocket server so that clients can connect to it to get live…
jcordingley
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- 3
0
votes
1 answer
Cannot remove dynamic event listeners
When using a regular function to bind to an event, I can remove it without problems. But when using a dynamic list of context functions, I cannot remove listeners for those.
Here's a simplified version of an entire test application:
'use…
vitaly-t
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0 answers
Test when eventEmitter subscription has finished
I have a function like:
public openCamera = (obj) => {
this._nativeCamera.getPicture()
.subscribe((selectedImage) => {
obj.avatar = selectedImage;
});
};
Now I want to test this function.
it('should pass', function(){
…
masimplo
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0
votes
1 answer
Error: ETIMEDOUT on NPM usage in Meteor
I try to use this NPM packages in Meteor 1.3.2.4. It use eventemitter in functions and has asyncronous callbacks. I try to convert it to synchronous-looking with Meteor.bindEnvironment based on this guide article like below:
Meteor.methods({
…
b24
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1 answer
Can't understand what's going on with EventEmitter using webpack and es6 modules
I'm trying to learn webpack and es6 at the same time and realized a need for some sort of event bus. I'm new to EventEmitters and constructors. I've read up on the docs and well as a bunch of examples, but I honestly don't get why the code below is…
Jeff
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Consuming EventEmitter events in nodejs (express/client)?
Going through the https://github.com/alepez/omxdirector code I see a lot of snippets where Events are being emitted by the omxdirector process
var play = function (videos, options) {
if (omxProcess) {
if (!paused) {
return false;
…
nitimalh
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