tiny-emit

Another event emitter, only tiny.

Install

Yarn

yarn add tiny-emit

NPM

npm install --save-dev tiny-emit

Usage

import tiny from 'tiny-emit';

const emitter = tiny();

emitter.on('foo', (bar) => {
    console.log(bar); // bar
});

emitter.emit('foo', 'bar');

Once

let i = 0;

emitter.once('incr', () => (i += 1));

emitter.emit('incr');
emitter.emit('incr');

console.log(i); // 1

Off

There is many ways to switch off a listener for an event. Call the listeners off function returned whenever the listener was added. This works for both .on() and .once() methods.

const off = emitter.on('foo', () => {});
off();

Or use the .off() method on the emitter.

emitter.off('foo', listener); // specific event and listener
emitter.off('foo');           // all listeners for given event
emitter.off();                // every listener for every event

API

#tiny()

Returns an emitter object.

Emitter Object

.on(<event>, <fn>)

• event String The event name.
• fn Function The listener function.

Returns an off Function.

.once(<event>, <fn>)

• event String The event name.
• fn Function The listener function.

Returns an off Function.

.off([event, [fn]])

• event String The event name.
• fn Function The listener function.

Returns void.

.emit(<event>, [...args])

• event String The event name.
• ...args Any Optional arguments to pass.

Returns void.

License

MIT

Copyright (c) 2017 Christopher Turner