type RngFunction = () => number;
/**
 * Create a random number generator that returns values from `seedrandom`.
 *
 * If `randomSeed` is null, the generator uses one shared generator that is seeded from
 * `Date.now()`. Otherwise it uses a new generator seeded with `String(randomSeed)`.
 */
export declare function createRng(randomSeed: string | number | null): RngFunction;
export {};
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