import type { Readable } from "svelte/store";
export declare enum VIEWPORT_NAMES {
    mobile = "mobile",
    tablet = "tablet",
    desktop = "desktop",
    widescreen = "widescreen"
}
export declare type IViewportValues = Record<keyof typeof VIEWPORT_NAMES, boolean>;
export declare type IViewportStore = Readable<boolean>;
export declare function viewport(viewport: keyof typeof VIEWPORT_NAMES): IViewportStore;
export declare function viewports(viewports?: Partial<IViewportValues>): IViewportStore;