import * as i0 from "@angular/core";
export declare class BackToTopComponent {
    threshold: import("@angular/core").InputSignal<number>;
    target: import("@angular/core").InputSignal<string | HTMLElement | null>;
    theme: import("@angular/core").InputSignal<"light" | "dark">;
    showProgress: import("@angular/core").InputSignal<boolean>;
    isVisible: import("@angular/core").WritableSignal<boolean>;
    scrollPercent: import("@angular/core").WritableSignal<number>;
    strokeDashoffset: import("@angular/core").Signal<number>;
    constructor();
    private checkScroll;
    scrollToTop(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<BackToTopComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<BackToTopComponent, "ngx-back-to-top", never, { "threshold": { "alias": "threshold"; "required": false; "isSignal": true; }; "target": { "alias": "target"; "required": false; "isSignal": true; }; "theme": { "alias": "theme"; "required": false; "isSignal": true; }; "showProgress": { "alias": "showProgress"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}