/**
 * Read and parse a JSON file, returning null on failure.
 */
export declare function readJson<T = unknown>(filePath: string): T | null;
/**
 * Check if a file exists.
 */
export declare function fileExists(filePath: string): boolean;
/**
 * List files matching glob patterns relative to root.
 */
export declare function globFiles(patterns: string[], root: string, ignore?: string[]): Promise<string[]>;
/**
 * Get file size in bytes. Returns 0 if file doesn't exist.
 */
export declare function getFileSize(filePath: string): number;
/**
 * Resolve a path relative to root.
 */
export declare function resolveFrom(root: string, ...segments: string[]): string;
/**
 * Read file content as string, null on failure.
 */
export declare function readFileContent(filePath: string): string | null;
/**
 * Parse a lockfile to extract dependency version mappings.
 * Supports package-lock.json (v2/v3) and yarn.lock (v1 basic).
 */
export declare function parseLockfileDependencies(root: string): {
    name: string;
    version: string;
}[] | null;
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