export declare class AnEvent implements Observable {
    private readonly observers;
    constructor();
    subscribe(observer: Observer): void;
    unsubscribe(observer: Observer): void;
    notify(): void;
}
interface Observable {
    subscribe(observer: () => void): void;
    unsubscribe(observer: () => void): void;
    notify(): void;
}
type Observer = () => void;
export {};
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