export interface Options {
    /**  The path to walk. */
    path: string;
    /** File extensions to look for. */
    extensions?: string[];
    /**  A list of directories to ignore. */
    ignorePaths?: string[];
    /** Whether or not to ignore the default extensions provided. */
    ignoreDefault?: boolean;
    /** Outputs extra information to this function if specified. */
    logger?: (log: string) => void;
}
export declare type Callback = (err: Error | null, result: SLOCResult | null) => void;
export interface FileSLOC {
    /** Lines of code. */
    loc: number;
    /** Source lines of code. */
    sloc: number;
    /** Number of blank lines. */
    blank: number;
    /** Number of lines of comments. */
    comments: number;
}
export interface SLOC extends FileSLOC {
    /** Number of files checked. */
    files: number;
}
export interface SLOCResult extends SLOC {
    /** Array of filepaths that have been checked. */
    paths: string[];
}
export interface FileExtension {
    /** The file extension language. */
    lang: string;
    /** Comment syntax for the language. */
    comments: {
        line: string | null;
        block: {
            start: string;
            end: string;
        } | null;
    };
}