export interface SafeOutputRoot {
    root: string;
    absolutePath: string;
    relativePath: string;
}
export declare function toPosix(value: string): string;
export declare function isInside(parent: string, child: string): boolean;
export declare function createSafeOutputRoot(repoRoot: string, outDir: string, label?: string): SafeOutputRoot;
export declare function writeFileUnder(root: string, relativePath: string, content: string, label?: string): string;
export declare function writeJsonUnder(root: string, relativePath: string, value: unknown, label?: string): string;
export declare function appendJsonLineUnder(root: string, relativePath: string, value: unknown, label?: string): string;
export declare function readJsonUnder<T = unknown>(root: string, relativePath: string, label?: string): T;
export declare function readJsonlUnder<T = unknown>(root: string, relativePath: string): T[];