import { LoadContext } from '@ovotech/potygen';
/**
 * Handle both "last updated" checks on files as well as actually checking file contents.
 */
export declare class CacheStore {
    /**
     * Path to the cache file
     */
    fileName: string;
    /**
     * If enabled is false, do not perform any caching
     */
    enabled: boolean;
    /**
     * If true, initialize the cache with empty values so that after save everything is overwritten
     */
    cacheClear: boolean;
    /**
     * Current version of the cache, if version mismatch, clear the cache
     */
    cacheVersion: string;
    contents: Map<string, {
        path: string;
        content: string;
    } | undefined>;
    updates: Map<string, number>;
    constructor(
    /**
     * Path to the cache file
     */
    fileName: string, 
    /**
     * If enabled is false, do not perform any caching
     */
    enabled?: boolean, 
    /**
     * If true, initialize the cache with empty values so that after save everything is overwritten
     */
    cacheClear?: boolean, 
    /**
     * Current version of the cache, if version mismatch, clear the cache
     */
    cacheVersion?: string);
    /**
     * Check the file's last modified time (mtime).
     * If its after the time stored in cache, consider the file stale.
     */
    isStale(path: string): Promise<boolean>;
    /**
     * For a given path and file content, check if content is present in the cache.
     * If it is not, run the process function and store the results in the cache,
     * keyed by md5 of the initial content
     */
    cachedOrProcessed(path: string, content: string, process: (path: string, content: string) => Promise<{
        path: string;
        content: string;
    } | undefined>): Promise<{
        path: string;
        content: string;
        isCached?: boolean;
    } | undefined>;
    /**
     * Load the cache from file
     */
    load(): Promise<void>;
    /**
     * Save current state in the cache file
     */
    save(): Promise<void>;
}
export declare const toEmitter: (ctx: LoadContext, cacheStore: CacheStore, options: {
    root: string;
    template: string;
    typePrefix?: string;
}) => Promise<(path: string) => Promise<{
    path: string;
} | undefined>>;