export declare const rnd: (seed?: number) => () => number;
/**
 * Executes code in a callback *deterministically*: the `Math.random()` function
 * is mocked for the duration of the callback.
 *
 * Example:
 *
 * ```js
 * deterministic(123, () => {
 *   return Math.random() + 1;
 * });
 * ```
 *
 * @param rndSeed A seed number or a random number generator function.
 * @param code Code to execute deterministically.
 * @returns Return value of the code block.
 */
export declare const deterministic: <T>(rndSeed: number | (() => number), code: () => T) => T;
/**
 * Creates a deep clone of any JSON-like object.
 *
 * @param obj Any plain POJO object.
 * @returns A deep copy of the object.
 */
export declare const clone: <T = unknown>(obj: T) => T;
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