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.
keep-posted
Advanced tools
Readme
Event emitting done the simplest, functional way. No silly strings to pass around. Only functions.
Actually keep-posted resembles more Signal than EventEmitter pattern but anyway. You can give it a try. For me this little piece of code gets job done faster and in less error-prone fashion than any other, more complicated PubSub/EventEmitter pattern.
npm install keep-posted
Or just grap keep-posted.js
file from this repo (it's UMD).
var keepPosted = requite('keep-posted');
// Create an instance
var somethingHappened = keepPosted.create();
// Attach event listener
var unsubscribe = somethingHappened.subscribe(function (a, b, c) {
console.log('Event!', a, b, c);
});
// Just call the function to trigger the event.
// Pass as many arguments as you like.
somethingHappened(1, 2, 3);
// Call the function returned to you when you did the subscribe
// to stop listening on that event.
unsubscribe();
var sillyStoreModule = function () {
var keepPosted = requite('keep-posted');
var store = [];
// One keep-posted instance is for only one event type.
// Create more instances if you need to support more event types.
var newStuffAdded = keepPosted.create();
var storeCapacityReached = keepPosted.create();
var addStuff = function (stuff) {
if (store.length < 99) {
store.push(stuff);
newStuffAdded(stuff);
} else {
storeCapacityReached();
}
};
return {
addStuff: addStuff,
onNewStuffAdded: newStuffAdded.subscribe,
onStoreFull: storeCapacityReached.subscribe,
}
};
var store = sillyStoreModule();
store.onNewStuffAdded(function (stuff) {
console.log('New stuff added:', stuff);
});
store.onStoreFull(function () {
console.log("Can't store more!");
});
store.addStuff('abc');
Creates keep-posted instance.
Parameters:
options
- object with possible fields:
onFirstSubscriber
- function called when first subscriber registers (e.g. hook for lazy instantiation).onEveryoneUnsubscribed
- function called when all subscribers have unregistered (e.g. hook for destroying what has been constructed with lazy instantiation).Returns:
Fresh instance of keepPosted, on which you can call...
Triggers the event.
Parameters:
params...
- any number of parameters which will be passed to all listeners.
Registers new subscriber (event listener).
Parameters:
options
- (optional) lets you pass config object for this listener. Possible keys:
refireMostRecent
- (default: false) - when set to true will re-send to this new subscriber most recent event which happened before this subscriber jumped on board (if no even happened before still will fire with undefined
).
callback
- well... you know what it does.Returns:
Unsubscribe trigger. A function
which you can call when you don't want to listen to that event anymore.
The MIT License (MIT)
Copyright (c) 2015 Jakub Szwacz
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
FAQs
Event emitting done the simplest functional way
The npm package keep-posted receives a total of 1 weekly downloads. As such, keep-posted popularity was classified as not popular.
We found that keep-posted 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.