/**
 * Deterministic seed derivation. A single master seed (a string) threads through
 * the whole run; every Battle gets a sub-seed derived from the master plus the
 * pairing and battle indices, so a fixed master reproduces identical results
 * regardless of iteration order.
 */
/** `@pkmn/sim`'s PRNG seed: four 16-bit words. */
export type PRNGSeed = [number, number, number, number];
/**
 * Derive a reproducible 4-word PRNG seed from the master seed and any number of
 * integer indices (e.g. team index, opponent index, battle index).
 */
export declare function deriveSeed(master: string, ...ints: number[]): PRNGSeed;