export interface Neighbours {
    edge?: number;
    current?: number;
}
export interface Options {
    target?: number;
    neighbours?: Neighbours;
    focus?: Item;
}
export interface Item {
    key: string;
    isCurrent: boolean;
    isGap(): boolean;
    isNumber(): boolean;
    asGap(): GapItem;
    asNumber(): NumberItem;
    toString(): string;
}
export declare class GapItem implements Item {
    from: number;
    to: number;
    key: string;
    isCurrent: boolean;
    constructor(from: number, to: number);
    asGap(): GapItem;
    asNumber(): NumberItem;
    isGap(): boolean;
    isNumber(): boolean;
    toString(): string;
}
export declare class NumberItem implements Item {
    value: number;
    key: string;
    isCurrent: boolean;
    constructor(value: number, current: boolean);
    asGap(): GapItem;
    asNumber(): NumberItem;
    isGap(): boolean;
    isNumber(): boolean;
    toString(): string;
}