export interface FileStats {
    hash?: string;
    lines: number;
}
export interface ScanStats {
    [filename: string]: FileStats | undefined;
}
export interface ScanResults {
    errors(): Map<string, Error>;
    all(): ScanStats;
    selectStats(regex: RegExp): ScanStats;
    selectFiles(regex: RegExp, baseDir: string): string[];
    hash: string;
}
export declare function scanSync(baseDir: string, regex: RegExp, precomputedHash?: string): ScanResults;
export declare function scan(baseDir: string, regex: RegExp, precomputedHash?: string): Promise<ScanResults>;
/**
 * Given a base-directory, this function scans the subtree and finds all the js
 * files. .git and node_module subdirectories are ignored.
 * @param {!string} baseDir top-level directory to scan
 * @param {!regex} regex the regular expression that specifies the types of
 *  files to find based on their filename
 * @param {!function(?Error, Array<string>)} callback error-back callback
 */
export declare function findFiles(baseDir: string, regex: RegExp): Promise<string[]>;
/**
 * Given a base-directory, this function scans the subtree and finds all the js
 * files. .git and node_module subdirectories are ignored.
 * @param {!string} baseDir top-level directory to scan
 * @param {!regex} regex the regular expression that specifies the types of
 *  files to find based on their filename
 * @param {!function(?Error, Array<string>)} callback error-back callback
 */
export declare function findFilesSync(baseDir: string, regex: RegExp): string[];