export declare function fileExit(filePath: string): void;
export declare const getKeyFormFile: (filePath: string, key: string) => any;
export declare const setKeyToFile: (filePath: string, key: string, value: any) => any;
export declare const readFileSync: (filePath: string) => string;
export declare const writeFileSync: (filePath: string, data: string) => void;
export declare class Config {
    static loadConfigFile(filePath: string): any;
    static loadJSConfigFile(filePath: string): unknown;
    static loadPackageJSONConfigFile(filePath: string): any;
    static loadJSONConfigFile(filePath: string): any;
    static readFile(filePath: string): string;
    static loadYAMLConfigFile(filePath: string): string | object;
    static loadLegacyConfigFile(filePath: string): string | object;
}
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