Once Packages

wrapper for calling callback only once

create a function that can only be invoked once

Listen to one event via `addEventListener`, then resolve a Promise

Run an event handler only once

Observe one mutation via `MutationObserver`, then resolve a Promise.

load a script, but only once

Observer pattern

Collection of Node.js / ECMAScript Gists

Call a function once and no more

Subscribe to an event before or after it's fired

Powerfull universal JavaScript event emitter for browser and server.

Make multiple replacements in a string without replacing ones that have already been replaced.

serve express middleware once

a simple event emitter mixin that is well-tested, solid, and dependency-free

Checks if value is once iterable.

Checks if value is once iterable.

Simple JavaScript event emitter.

Redux middleware for delaying dispatch of an action until a condition evaluates to true.

Common typescript ready prototypes available in both CommonJS and ECMAScript

Call function once. Create a never to be repeated function