export declare const DEFAULT_SKIP_DIRS: Set<string>;
export declare function walk(dir: string, skipDirs?: Set<string>): Generator<string>;
export declare function lineColForOffset(contents: string, offset: number): {
    line: number;
    col: number;
};
export declare function isCommentLine(lineText: string): boolean;
export declare function relPosix(root: string, file: string): string;
export declare function readFileSafe(file: string): string | null;
export declare function isExtraExempt(rel: string, extraExemptPaths: string[] | undefined): boolean;