export declare function overwriteMerge(target: unknown[], source: unknown[]): unknown[];
export declare function combineMerge(key: string): (target: {
    key: string;
}[], source: {
    key: string;
}[]) => {
    key: string;
}[];
export declare function shuffleArray<T>(arr: Array<T>): Array<T>;
export declare function getRange(arr: number[]): number[];