/**
 * LoadingGate — One-shot initialization barrier.
 *
 * Ensures an async init function runs exactly once, even if multiple
 * callers race to trigger it. All callers receive the same result.
 *
 * Usage:
 *   const gate = new LoadingGate();
 *   // In any code path that needs init to be done:
 *   await gate.ensure(async () => { ... expensive init ... });
 */
export declare class LoadingGate<T = void> {
    private _promise;
    private _resolved;
    private _value;
    /** Whether the gate has been opened (init completed successfully). */
    get isReady(): boolean;
    /**
     * Run the init function if it hasn't been started yet.
     * If init is in progress, join the existing promise.
     * If init completed, return the cached result immediately.
     */
    ensure(init: () => Promise<T>): Promise<T>;
    /** Reset the gate so init can run again. */
    reset(): void;
}
//# sourceMappingURL=loading-gate.d.ts.map