/**
 * Platform-free EventEmitter implementation.
 *
 * The DI container extends EventEmitter, so it cannot DI-inject its own emitter
 * ( chicken-and-egg ). Node's `events` module is not available in the browser,
 * so we ship a small drop-in with the same public surface used across the
 * framework. Behaviour mirrors Node's EventEmitter closely enough for our needs:
 *
 * - `this`-returning mutators ( on / off / emit / ... )
 * - listener ordering ( prepend variants )
 * - once wrappers
 * - per-instance max listeners tracking
 *
 * Intentional deviation from Node: no throw-on-unhandled-'error'. The container
 * never relies on that behaviour and throwing would be surprising in a browser.
 */
type Listener = (...args: any[]) => void;
export declare class EventEmitter {
    private _events;
    private _maxListeners;
    setMaxListeners(n: number): this;
    getMaxListeners(): number;
    addListener(event: string | symbol, listener: Listener): this;
    on(event: string | symbol, listener: Listener): this;
    prependListener(event: string | symbol, listener: Listener): this;
    once(event: string | symbol, listener: Listener): this;
    prependOnceListener(event: string | symbol, listener: Listener): this;
    removeListener(event: string | symbol, listener: Listener): this;
    off(event: string | symbol, listener: Listener): this;
    removeAllListeners(event?: string | symbol): this;
    emit(event: string | symbol, ...args: any[]): boolean;
    listeners(event: string | symbol): Listener[];
    rawListeners(event: string | symbol): Listener[];
    listenerCount(event: string | symbol): number;
    eventNames(): (string | symbol)[];
    private _add;
    private _onceWrap;
}
export {};
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