import type { CacheItem, CacheItemChanged } from '../types.js';
declare class ComponentsCache {
    /**
     * stores item changed.
     */
    itemsChanged: Array<CacheItemChanged>;
    constructor();
    /**
     *
     * @param id : identifier for component
     * @param input : component source code location
     * @param output : component generated destination
     */
    private getHashFilePath;
    /**
     *
     * @param cacheItem item to get from cache file system
     * @return cache information
     */
    getCachedFileInfo(cacheItem: CacheItem): Promise<any>;
    /**
     * @desc calculates the hash for a given file. Returns null if file does not exist.
     * @param filePath
     */
    calculateFileHash(filePath: string): Promise<string | null>;
    /**
     * @desc returns true if previous cached hash is the same than calculated hash
     * for the input.
     * @param cacheItem
     */
    hasChanged(cacheItem: CacheItem): Promise<boolean>;
    /**
     * returns all the items that changed.
     */
    getChangedItems(): CacheItemChanged[];
    /**
     * @desc generate cache files for all items that changed.
     */
    generateCacheFiles(): void;
    /**
     * @desc Clear the items changed array.
     */
    clearItemsChanged(): void;
}
declare const componentsCache: ComponentsCache;
export default componentsCache;