/**
 * The scheduler behind every timer-driven store behavior (the actor send
 * loop, stale reaping, chunk write-back throttling, the host heartbeat).
 *
 * Why an abstraction: browsers throttle main-thread timers in hidden tabs
 * (≥1 s immediately, down to ~1/minute under intensive throttling), which
 * would silently drop a backgrounded player's presence rate. Timers inside a
 * **dedicated Web Worker are exempt**, so games that need full-rate sends
 * while backgrounded pass {@link workerTicker} to `createWorldSession`;
 * everything else defaults to {@link intervalTicker}. Tests drive stores
 * deterministically with {@link manualTicker}.
 *
 * (WebSocket message delivery is NOT throttled in hidden tabs, so inbound
 * store updates flow regardless of the ticker choice.)
 */
/** A cancellable repeating-callback scheduler. */
export interface Ticker {
    /**
     * Invoke `callback` every `intervalMs` until cancelled.
     * @returns A cancel function for this schedule.
     */
    every(intervalMs: number, callback: () => void): () => void;
    /** Cancel every schedule and release resources (e.g. terminate the worker). */
    dispose(): void;
}
/** Plain `setInterval` ticker — the default. Subject to background-tab throttling. */
export declare function intervalTicker(): Ticker;
/**
 * A ticker whose intervals run inside an inline dedicated Web Worker —
 * exempt from background-tab timer throttling, so a hidden tab keeps
 * sending presence at full rate. Falls back to {@link intervalTicker} in
 * runtimes without `Worker`/`Blob` support (Node, SSR).
 */
export declare function workerTicker(): Ticker;
/** A {@link manualTicker}: time only moves when the test calls `advance`. */
export interface ManualTicker extends Ticker {
    /** Advance virtual time, firing due callbacks (repeatedly, in due order). */
    advance(ms: number): void;
    /** The current virtual time in ms. */
    readonly now: number;
}
/** Deterministic ticker for tests — no real timers. */
export declare function manualTicker(): ManualTicker;
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