export declare function focusNode(node: HTMLElement | undefined, virtual: boolean): HTMLElement | undefined;
export declare function focusNext(nodes: HTMLElement[] | NodeListOf<HTMLElement>, targetNode: HTMLElement, loop: boolean, virtual: boolean): HTMLElement | undefined;
export declare function focusPrev(nodes: HTMLElement[] | NodeListOf<HTMLElement>, targetNode: HTMLElement, loop: boolean, virtual: boolean): HTMLElement | undefined;
export declare function focusFirst(nodes: HTMLElement[] | NodeListOf<HTMLElement>, virtual: boolean): HTMLElement | undefined;
export declare function focusLast(nodes: HTMLElement[] | NodeListOf<HTMLElement>, virtual: boolean): HTMLElement | undefined;
export declare function focusMatch(nodes: HTMLElement[] | NodeListOf<HTMLElement>, character: string, virtual: boolean): HTMLElement | undefined;
export declare function lockFocus(ref: HTMLElement, reverse: boolean, virtual: boolean): HTMLElement | undefined;
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