A super simple pubsub utilizing javascript sets

TinyPS.js

function TinyPS() {
    var listeners = new Set();
    return {
        pub: (...args) => Array.from(listeners).forEach(listener => listener(...args)),
        sub: listener => listeners.add(listener) && listener,
        unsub: listener => listeners.delete(listener),
        wipe: () => listeners.clear()
    };
}