export declare function valuesAllSame(arr: any[]): boolean;
type ISplitMethod = 'random' | 'uniform';
export declare function generateSplitValues(min: number, max: number, number?: number, method?: ISplitMethod): number[];
export declare function filterWithIndices<T = any>(arr: T[], condition: (v: T, i: number, arr: T[]) => boolean): {
    subArr: T[];
    indices: number[];
};
/**
 * Define a function-valued working field (e.g. a seeded RNG) as a
 * non-enumerable own property so it is skipped by the estimator-contract
 * serializer (`toJSON` only walks enumerable own props). Later plain
 * assignments to the field keep the non-enumerable flag.
 */
export declare function defineHiddenField(obj: object, key: string, value: unknown): void;
export declare function getUniqueFreqs(arr: any[]): number[];
export {};