export declare const ROOT_FOCUS_KEY = "SN:ROOT";
interface FocusableComponentLayout {
    left: number;
    top: number;
    width: number;
    height: number;
    x: number;
    y: number;
}
export interface FocusableEventLayout extends FocusableComponentLayout, Pick<FocusableComponent, 'node'> {
}
interface FocusableComponent {
    focusKey: string;
    node: HTMLElement | null;
    parentFocusKey: string;
    onEnterPress: (details: KeyPressDetails) => void;
    onEnterRelease: () => void;
    onArrowPress: (direction: string, details: KeyPressDetails) => boolean;
    onFocus: (layout: FocusableEventLayout, details: FocusDetails) => void;
    onBlur: (layout: FocusableEventLayout, details: FocusDetails) => void;
    onUpdateFocus: (focused: boolean) => void;
    onUpdateHasFocusedChild: (hasFocusedChild: boolean) => void;
    saveLastFocusedChild: boolean;
    trackChildren: boolean;
    preferredChildFocusKey?: string;
    focusable: boolean;
    isFocusBoundary: boolean;
    autoRestoreFocus: boolean;
    lastFocusedChildKey?: string;
    layout: FocusableComponentLayout;
    layoutUpdated?: boolean;
}
export declare type PressedKeys = {
    [index: string]: number;
};
/**
 * Extra details about pressed keys passed on the key events
 */
export interface KeyPressDetails {
    pressedKeys: PressedKeys;
}
/**
 * Extra details passed from outside to be bounced back on other callbacks
 */
export interface FocusDetails {
    event?: Event;
    nativeEvent?: Event;
    [key: string]: any;
}
export declare type BackwardsCompatibleKeyMap = {
    [index: string]: number | number[];
};
export declare type KeyMap = {
    [index: string]: number[];
};
export declare const init: ({ debug, visualDebug, nativeMode, throttle: throttleParam, throttleKeypresses, useGetBoundingClientRect }?: {
    debug?: boolean | undefined;
    visualDebug?: boolean | undefined;
    nativeMode?: boolean | undefined;
    throttle?: number | undefined;
    throttleKeypresses?: boolean | undefined;
    useGetBoundingClientRect?: boolean | undefined;
}) => void, setThrottle: ({ throttle: throttleParam, throttleKeypresses }?: {
    throttle?: number | undefined;
    throttleKeypresses?: boolean | undefined;
}) => void, destroy: () => void, setKeyMap: (keyMap: BackwardsCompatibleKeyMap) => void;
export {};