import type { BattleResult } from './run-battle.js';
import type { PRNGSeed } from '../seed.js';
export interface BattleJob {
    p1: string;
    p2: string;
    seed: PRNGSeed;
    maxTurns?: number;
}
/** One unit of the pool — wraps a real thread, or a fake in tests. */
export interface PoolWorker {
    exec(job: BattleJob): Promise<BattleResult>;
    terminate(): void;
}
export declare class BattlePool {
    private readonly workers;
    private readonly idle;
    private readonly queue;
    constructor(size: number, spawn: () => PoolWorker);
    /** Run one Battle, queued until a worker is free. */
    run(job: BattleJob): Promise<BattleResult>;
    private pump;
    close(): void;
}
/** The shared pool for this process, or null when concurrency ≤ 1 (run inline). */
export declare function getBattlePool(): BattlePool | null;