/**
 * Copyright (c) Microsoft Corporation. All rights reserved.
 */
import type { IDisposable } from '@microsoft/sp-core-library';
import type { IPrefetchOptions } from './IPrefetchData';
/**
 * IPrefetchDataProvider is the contract to be met by prefetch data providers
 *
 * @internal
 */
export interface IPrefetchDataProvider extends IDisposable {
    /**
     * Initializes tracking and retreival of prefetch data.
     * To access the data, call methods getData or getDataAsync
     */
    initialize(): void;
    /**
     * Gets data from the prefetch provider for the given prefetch Key
     *
     * @param prefetchKey - The key to retrieve the prefetch entry
     * @param prefetchOptions - The options to retrieve prefetch data
     */
    getData<TData>(prefetchKey: string, prefetchOptions: IPrefetchOptions): TData | undefined;
    /**
     * Gets prefetched data from the prefetch provider for the given prefetch Key async
     *
     * @param prefetchKey - The key to retrieve the prefetch entry
     * @param prefetchOptions - The options to retrieve prefetch data
     */
    getDataAsync<TData>(prefetchKey: string, prefetchOptions: IPrefetchOptions): Promise<TData>;
    /**
     * Re-initializes tracking and retreival of prefetch data.
     * It stops tracking existing data and starts tracking new data.
     * This is helpful on in-place-nav scenarios
     */
    resetPrefetchData(): void;
    /**
     * Sets prefetch data as available for the application.
     *
     * @param prefetchKey - The key to set the Prefetch Data
     * @param prefetchData - The Prefetch data
     */
    setData<TData>(prefetchKey: string, prefetchData: TData): void;
    /**
     * Listens to changes on a specific prefetched variable
     *
     * @param key - The key of the prefetch entry
     * @param prefetchOptions - The options to configure prefetch updates
     * @param loadedName - The name of the 'loaded' function called for this prefetch variable (usally `{key}Loaded`)
     *
     * @returns - The function to unsubscribe from changes
     */
    trackPrefetchDataUpdated(key: string, prefetchOptions: IPrefetchOptions, loadedName: string): () => void;
}
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