import fs from 'fs';
export declare function ensureDir(dirPath: string): void;
export declare function writeJSON(filePath: string, data: unknown): void;
export declare function readJSON<T>(filePath: string): T | null;
export declare function writeFile(filePath: string, content: string): void;
export declare function readFile(filePath: string): string | null;
export declare function fileExists(filePath: string): boolean;
export declare function fileStats(filePath: string): fs.Stats | null;
export interface WalkEntry {
    rel: string;
    abs: string;
}
export declare function walkDir(dir: string, shouldIgnore: (rel: string) => boolean): WalkEntry[];
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