Once Packages

Resolves a promise only once and memoizes the result

Resolves a promise only once and memoizes the result in a map

QUnit plugin for running module setup and teardown once

Invoke a function only once

Execute an async function once and save the result

A fast, memory efficient, and tiny solution to an evergreen problem

EventEmitter designed for TypeScript and Promises

Manage event handlers as a resource: prevent leaks, double-listens, and exert more control over event handlers.

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

Combine promises and events

Act once upon the next occurrence of an eventuate

mixin to add one-time ready event callback handler

piece of useful tool

Register a one listener for an event, fired only when the filter function returns true

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

Handle an event asap after it fired, even if that was in the past. A stripped-down version of event-historian-pmb's .asSoonAs().

WeakEventEmitter focuses on using weak references and keeping performance while maintaining a Node.js AND browser compatible interface.

create a function from a function so it is only called once

R.once exported as a module

A micro typescript library for ensuring that a function is called only once.