import { type Readable } from "svelte/store";
/** The paywall's own box in CSS px, which window size rules evaluate against. */
export type WindowSize = {
    width: number;
    height: number;
};
/** Null until the paywall has been measured. */
export type WindowSizeStore = Readable<WindowSize | null>;
export declare function setWindowSizeContext(store: WindowSizeStore): void;
export declare function getWindowSizeContext(): WindowSizeStore;