export declare class ActivityIndictor {
    contianer: HTMLElement;
    static instance?: ActivityIndictor;
    private _element;
    static show(contianer: HTMLElement): void;
    static hide(): void;
    private _shown;
    constructor(contianer: HTMLElement);
    get isShown(): boolean;
    show(): void;
    hide(): void;
    createElement(): HTMLElement;
}