export declare function ensureDir(dir: string): void;
export declare function writeJson(path: string, data: unknown): void;
export declare function atomicWriteJson(path: string, data: unknown): void;
export declare function atomicWriteText(path: string, content: string | Uint8Array): void;
export declare function readJson<T = unknown>(path: string): T;
export declare function readJsonIfExists<T = unknown>(path: string): T | null;
export declare function readTextIfExists(path: string): string | null;
export declare function readText(path: string): string;
export declare function writeText(path: string, content: string): void;
export declare function isDir(path: string): boolean;
export declare function isSymlink(path: string): boolean;
export declare function pathExists(path: string): boolean;
export declare function listDirs(path: string): string[];
export declare function listEntries(path: string): string[];
export declare function removePath(path: string): void;
export declare function linkOrCopy(target: string, linkPath: string, opts?: {
    noSymlink?: boolean;
}): 'symlink' | 'copy';
export declare function readSymlinkTarget(path: string): string | null;
export declare function walkFiles(root: string, predicate?: (name: string) => boolean, skipDir?: (name: string) => boolean): string[];
export declare function nowIso(): string;