Retrospring/app/javascript/retrospring/utilities/registerEvents.ts

export interface EventDef {
    type: string;
    target: Node | NodeList;
    handler: EventListenerOrEventListenerObject;
}

export default function registerEvents(events: EventDef[]): void {
    events.forEach(event => {
        if (event.target instanceof NodeList) {
            event.target.forEach(element => {
                element.addEventListener(event.type, event.handler);
            });
        } else if (event.target instanceof Node) {
            event.target.addEventListener(event.type, event.handler);
        }
    });
}