export declare function validatePrivateKey(value: any): void;
export declare function isValidPrivateKey(value: any): value is string;
export declare function validateUsername(value: any): void;
export declare function isValidUsername(value: any): value is string;
export declare function validatePassword(value: any): void;
export declare function isValidPassword(value: any): value is string;
//# sourceMappingURL=credential-validators.d.ts.map