import type { ConfigurableDocument } from "../_configurable";
export interface FaviconOptions extends ConfigurableDocument {
    base_url?: string;
    rel?: string;
}
/**
 * Reactive favicon.
 *
 * @param new_icon
 * @param options
 */
export declare function favicon(new_icon?: string | null | undefined, options?: FaviconOptions): {
    subscribe: (this: void, run: import("svelte/store").Subscriber<string | null | undefined>, invalidate?: ((value?: string | null | undefined) => void) | undefined) => import("svelte/store").Unsubscriber;
    set: (value: string | null | undefined) => void;
};