export declare type OnChangeFn<T, E> = (state: T, event: E) => void;
export declare class SubscriberList<T, E> {
    private readonly get;
    private readonly equalFn;
    private readonly map;
    constructor(get: () => T, equalFn?: (a: T, b: T) => boolean);
    subscribe(onChange: OnChangeFn<T, E>, event: E): () => void;
    emitChange(event: E): void;
}