export declare class PackageJson {
    private _config;
    constructor(buffer: Buffer | undefined | null);
    hasProperty(key: string): boolean;
    setDevDependency(name: string, version: string): void;
    removeDevDependency(name: string): void;
    setScript(name: string, command: string): void;
    setHuskyHook(name: string, command: string): void;
    stringify(): string;
    private _hasNoContent;
}