/**
 * High-performance event manager using Maps for O(1) lookups.
 * Replaces React Native's EventEmitter which has significant overhead.
 */
export type EventHandler<T extends unknown[] = unknown[]> = (...args: T) => void;
export interface EventSubscription {
    readonly unsubscribe: () => void;
}
declare class EventManager {
    private _handlers;
    private _nextId;
    /**
     * Subscribe to an event with a handler function.
     * Returns a subscription object with an unsubscribe method.
     */
    subscribe<T extends unknown[] = unknown[]>(name: string, handler: EventHandler<T>): EventSubscription;
    /**
     * Publish an event with optional arguments.
     * All subscribed handlers will be called synchronously.
     */
    publish<T extends unknown[] = unknown[]>(name: string, ...args: T): void;
    /**
     * Publish an event asynchronously using microtasks for better performance.
     * Useful when you don't need immediate execution.
     */
    publishAsync<T extends unknown[] = unknown[]>(name: string, ...args: T): void;
    /**
     * Check if an event has any subscribers.
     */
    hasSubscribers(name: string): boolean;
    /**
     * Get the number of subscribers for an event.
     */
    subscriberCount(name: string): number;
    /**
     * Remove all listeners for the specified event names.
     */
    remove(...names: string[]): void;
    /**
     * Remove all event listeners.
     */
    clear(): void;
    /**
     * Subscribe to an event that will only fire once.
     */
    once<T extends unknown[] = unknown[]>(name: string, handler: EventHandler<T>): EventSubscription;
}
export declare const eventManager: EventManager;
export default EventManager;
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