Method trigger

src/js/evented.js:39–55

(event, ...args)

  }

  trigger(event, ...args) {
    if (!isUndefined(this.bindings) && this.bindings[event]) {
      this.bindings[event].forEach((binding, index) => {
        const { ctx, handler, once } = binding;

        const context = ctx || this;

        handler.apply(context, args);

        if (once) {
          this.bindings[event].splice(index, 1);
        }
      });
    }

    return this;
  }
}