export interface OverlayOptions {
    message?: string;
    contact?: string;
    style?: {
        backgroundColor?: string;
        color?: string;
        fontSize?: string;
    };
    duration?: number;
}
declare class OverlayLocker {
    private overlayHost;
    private timeoutId;
    private randomId;
    show({ message, contact, style, duration }: OverlayOptions): void;
    hide(): void;
}
declare const instance: OverlayLocker;
export default instance;
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