import type { Paper, Surface } from "@visuallyjs/browser-ui";
import { BrowserUISvelteModel } from "./index";
/**
 * Key for the surface context
 * @internal
 */
export declare const STORE_KEY: unique symbol;
export interface ComponentRef<T> {
    set: (o: T) => void;
    listen: (l: (o: T) => any) => void;
}
/**
 * Handle for a surface - use `set` to set the surface and `listen` to register a listener.
 * @internal
 */
export interface SurfaceRef {
    set: (surface: Surface) => void;
    listen: (l: (s: Surface) => any) => void;
}
/**
 * Handle for a paper - use `set` to set the paper and `listen` to register a listener.
 * @internal
 */
export interface PaperRef {
    set: (paper: Paper) => void;
    listen: (l: (s: Paper) => any) => void;
}
/**
 * Create a surface context, and set it on Svelte via `setContext`.
 * @internal
 */
export declare function internal_createSurfaceContext(): SurfaceRef;
/**
 * Create a paper context, and set it on Svelte via `setContext`.
 * @internal
 */
export declare function internal_createPaperContext(): PaperRef;
/**
 * Gets the current surface context from Svelte, optionally creating it if it does not exist. The Surface and the SurfaceProvider both set `doNotCreate` to false; other components such as miniview/controls must set it to true.
 * This method is NOT to be invoked by users of the API. Use {@link useSurface} to access the current Surface.
 * @param doNotCreate
 * @internal
 */
export declare function internal_getSurfaceContext(doNotCreate: boolean): SurfaceRef;
/**
 * Gets the current paper context from Svelte, optionally creating it if it does not exist. The Paper and the PaperProvider both set `doNotCreate` to false; other components such as miniview/controls must set it to true.
 * This method is NOT to be invoked by users of the API. Use {@link usePaper} to access the current Paper.
 * @param doNotCreate
 * @internal
 */
export declare function internal_getPaperContext(doNotCreate: boolean): PaperRef;
/**
 * Hook to expose the current model. This hook is asynchronous and returns a Promise.
 * @group Hooks
 */
export declare function useVisuallyJsModel(): Promise<BrowserUISvelteModel>;