export declare function updateTabbableEls({ include, exclude, merge, }: {
    include?: (HTMLElement | ShadowRoot)[];
    exclude?: (HTMLElement | ShadowRoot)[];
    merge?: boolean;
}): void;
export declare function trapFocus(el: HTMLElement | ShadowRoot, exclude?: HTMLElement[], initialFocusIndex?: number): Promise<void>;
export declare function releaseFocus(newFocusEl: HTMLElement): void;
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