Once Packages

Ensure a function is only called once

Run a function exactly one time

EventEmitter3 focuses on performance while maintaining a Node.js AND browser compatible interface.

The lodash method `_.once` exported as a module.

Simple and modern async event emitter

A feature-rich Node.js event emitter implementation with namespaces, wildcards, TTL, async listeners and browser/worker support.

Run the supplied function exactly one time (once)

Split a string on the first occurance of a given separator

A small utility for creating warnings and emitting them.

mixin to add one-time ready event callback handler

async oncehelper method as module.

Simple API for managing options in JavaScript applications.

Stashes callbacks for later execution

A lean Promises and Async lib for ES6/ES7

promises for events

Polyfill for Node core `events.once

Events micro toolkit.

Unique job utility for kue

A react-native wrapper component which supports both double tap and single tap

define a method that will be executed only once