redispatch.ts

/**
 * Redispatch event with composed flag to propagate it through the shadow DOM.
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/Event/composed
 */
function redispatchComposedEvent(event: Event) {
    event.stopPropagation();

    const composedEvent = new Event(event.type, {
        bubbles: event.bubbles,
        cancelable: event.cancelable,
        composed: true,
    });

    event.target.dispatchEvent(composedEvent);
}