drop-in synchronous bus gist using jquery-node

bus.js

const $ = require('jquery-node');

// Description: drop-in synchronous bus gist using jquery-node
// Usage:
// 
//    bus.on("foo", (...args) => {
//       console.log("foo was triggered", args);
//    });
//    bus.subscribe({
//       onFoo(...args) {console.log("foo triggered too", args)}
//    });
//    bus.trigger("foo", 1,2,3);
//    => foo triggered [ 1, 2, 3 ]
//    => foo triggered too [ 1, 2, 3 ]
//

const bus = $('<div>');

module.exports = {
	on(eventName, handler) {
		bus.on(eventName, (e, args) => handler(...args));
	},
	off(...args) {
		bus.off(...args);
	},
	subscribe(objectWithHandlers) {
		const uncapitalize = (x) => x.charAt(0).toLowerCase() + x.slice(1);
		Object.keys(objectWithHandlers)
			.filter((methodName) => methodName.startsWith("on"))
			.forEach((methodName) => {
				const eventName = uncapitalize(methodName.replace(/^on/, ""));
				handler = objectWithHandlers[methodName];
				bus.on(eventName, (e, args) => handler(...args));
			})
		;
	},
	trigger(eventName, ...args) {
		bus.triggerHandler(eventName, [args]);
	}
};