/**
 * Exposes the API to write file parsed contents to disk as cache. Handles
 * all the complexity of generate correct paths and creating contents
 * hash
 */
export declare class Cache {
    private appRoot;
    private cacheRoot;
    constructor(appRoot: string, cacheRoot: string);
    /**
     * Generates hash from file contents
     */
    generateHash(contents: string): string;
    /**
     * Makes cache path from a given file path and its contents
     */
    makeCachePath(filePath: string, contents: string, extname: '.js' | '.json'): string;
    /**
     * Returns the file contents from the cache (if exists), otherwise
     * returns null
     */
    get(cachePath: string): string | null;
    /**
     * Writes file contents to the disk
     */
    set(cachePath: string, contents: string): void;
    /**
     * Clears all the generate cache for a given file
     */
    clearForFile(filePath: string): void;
    /**
     * Clears the cache root folder
     */
    clearAll(): void;
}
/**
 * A parallel fake implementation of cache that results in noop. Used
 * when caching is disabled.
 */
export declare class FakeCache {
    constructor();
    /**
     * Generates hash from file contents
     */
    generateHash(_: string): string;
    /**
     * Makes cache path from a given file path and its contents
     */
    makeCachePath(_: string, __: string, ___: '.js' | '.json'): string;
    /**
     * Returns the file contents from the cache (if exists), otherwise
     * returns null
     */
    get(_: string): string | null;
    /**
     * Writes file contents to the disk
     */
    set(_: string, __: string): void;
    /**
     * Clears all the generate cache for a given file
     */
    clearForFile(_: string): void;
    /**
     * Clears the cache root folder
     */
    clearAll(): void;
}