Security News
tea.xyz Spam Plagues npm and RubyGems Package Registries
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
eventhub
Advanced tools
Readme
npm install eventhub
Use global event:
var EventHub = require('eventhub');
EventHub.on('greeting', function (data) {
console.log(data);
});
eventhub.emit('greeting', 'Hello World!');
Attach event:
var EventHub = require('eventhub'),
EventEmitter = require('events').EventEmitter,
greeter;
greeter = new EventEmitter();
EventHub.register('greeter', greeter);
// EventHub.emitters['greeter'].once('greeting', function (data) {
EventHub.once('greeter', 'greeting', function (data) {
console.log(data);
EventHub.remove('greeter');
});
EventHub is a general purpose event hub. When you require it, you get an instance of an event hub that can accept EventEmitters, or function as a stand-alone event emitter.
The idea is that EventHub will act as a message center. Each module in an application will include EventHub and communicate with events.
The API of EventHub is exactly the same as Node's EventEmitter, except that most methods have an optional first parameter that specifies the resource. The only functions added are:
register
- registers an EventEmitterremove
- removes an EventEmitterget
- gets an EventEmitterFor more information, see the API.
The API is intentionally not bullet-proof. This means that no errors will ever be thrown for invalid parameters, but each function will do its best to avoid incorrect usage.
Functions exactly like EventEmitter if given two arguments. This function just calls the built-in addListener function of the specified EventEmitter. This function takes up to 4 arguments:
resource
- resource to listen to (defaults to global emitter)event
- event to listen to (required, string)listener
- callback for each event (required, function)once
- true to get exactly one notification (defaults to false)Returns true if the emitter was found and the respective addListener function was called, or false otherwise.
Alias for addListener.
Convenience function for addListener(resource, event, cb, true).
Removes a listener from the specified resource. If no resource is specified, the global emitter is assumed. This function takes up to 3 arguments:
resource
- resource to remove listener from (defaults to global emitter)event
- event to remove listener for (required, string)listener
- function used as a callback which should be removed (required, function)Returns true if the emitter was found and removeListener was called on it, or false otherwise.
Removes all listeners for the specified event. This function takes up to two arguments:
resource
- resource to remove listeners from (defaults to globlal emitter)event
- event to remove listeners for (required, string)Sets the maximum. This will increase the default to the specified number (n). If n is zero, the number of listeners will be unlimited. This function takes up to two arguments:
resource
- resource to increase max of (defaults to global emitter)n
- number to set maximum to (required, number)Returns an array of listeners to a particular event. This function takes up to two arguments:
resource
- resource to get listeners from (defaults to global emitter)event
- event to get listeners from (required, string)Returns an array of listeners. This array may be manipulated (to remove, add, or modify listeners).
Registers an emitter as the specified resource. This function takes exactly two arguments:
resource
- name for this emitter (string)emitter
- instance that will emit events and allow listeners (EventEmitter)Returns true if the emitter was added, or false if an emitter already exists by that name.
Removes an emitter. This function takes exactly one argument:
resource
- name of the EventEmitter to removeAlias for the global emitter's emit function.
Gets an EventEmitter by name. This function takes up to one argument:
resource
- the name of the EventEmitter to get (defaults to the global EventEmitter)This function returns an EventEmitter or 'undefined' if none exists.
Emitted every time a new resource is registered. The event fired will have a two parameters: function (resource, emitter) { }
resource
- the name of the resource that was registeredemitter
- the emitter that was registeredFAQs
Message passing in node implemented with EventEmitters
The npm package eventhub receives a total of 3 weekly downloads. As such, eventhub popularity was classified as not popular.
We found that eventhub demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
Security News
As cyber threats become more autonomous, AI-powered defenses are crucial for businesses to stay ahead of attackers who can exploit software vulnerabilities at scale.
Security News
UnitedHealth Group disclosed that the ransomware attack on Change Healthcare compromised protected health information for millions in the U.S., with estimated costs to the company expected to reach $1 billion.