/**
 * Represents the event emitted when an accordion or collapsible element changes its state.
 *
 * @template T - The type of value associated with the collapsible element.
 */
export interface CollapseEvent<T = any> {
    /**
     * The index of the item within the collection of collapsible elements.
     */
    index: number;
    /**
     * Indicates whether the item is currently collapsed (`true`) or not (`false`).
     */
    collapsed: boolean;
    /**
     * Indicates whether the item is currently uncollapsed (`true`) or not (`false`).
     * Useful when distinguishing explicitly expanded items.
     */
    uncollapsed: boolean;
    /**
     * The value associated with the collapsible element.
     */
    value: T;
}