export declare class Loading { private _isLoading; private _loadingLabel; private _feedback; private _success; constructor(); startLoading(label?: string): void; stopLoadingWithSuccess(message?: string): void; stopLoadingWithError(message?: string): void; get isLoading(): boolean; get loadingLabel(): string; get feedback(): string; runCallbackWithLoading(callback: () => Promise, loadingLabel?: string, successMessage?: string, failureMessage?: string): Promise; }