/**
 * Package.json utility functions
 */
export declare const JSON_SPACING = 4;
export declare const ADD_END_NEWLINE = true;
export interface PackageJson {
    name?: string;
    version?: string;
    dependencies?: Record<string, string>;
    devDependencies?: Record<string, string>;
    peerDependencies?: Record<string, string>;
    resolutions?: Record<string, string>;
    [key: string]: unknown;
}
/**
 * Reads and parses a package.json file
 */
export declare function readPackageJson(filePath: string): Promise<PackageJson>;
/**
 * Reads and parses a package.json file synchronously
 */
export declare function readPackageJsonSync(filePath: string): PackageJson;
/**
 * Writes a package.json file with proper formatting
 */
export declare function writePackageJson(filePath: string, content: PackageJson, options?: {
    spacing?: number;
    endNewline?: boolean;
}): Promise<void>;
/**
 * Writes a package.json file synchronously with proper formatting
 */
export declare function writePackageJsonSync(filePath: string, content: PackageJson, options?: {
    spacing?: number;
    endNewline?: boolean;
}): void;
/**
 * Merges dependencies from source into target
 */
export declare function mergeDependencies(target?: Record<string, string>, source?: Record<string, string>): Record<string, string>;
/**
 * Sorts an object's keys alphabetically
 */
export declare function sortObjectKeys<T extends Record<string, unknown>>(obj: T): T;
/**
 * Checks if a file exists
 */
export declare function fileExists(filePath: string): Promise<boolean>;
/**
 * Checks if a file exists synchronously
 */
export declare function fileExistsSync(filePath: string): boolean;
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