import * as i0 from "@angular/core";
export declare class CuiSkeleton {
    private animation?;
    private readonly el;
    private readonly duration;
    protected readonly nothing: undefined;
    private readonly _skeleton;
    protected readonly placeholder: import("@angular/core").Signal<string | null>;
    protected readonly skeleton: import("@angular/core").Signal<boolean>;
    set cuiSkeleton(value: boolean | number | string);
    private getLength;
    static ɵfac: i0.ɵɵFactoryDeclaration<CuiSkeleton, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<CuiSkeleton, "[cuiSkeleton]", never, { "cuiSkeleton": { "alias": "cuiSkeleton"; "required": false; }; }, {}, never, never, true, never>;
}