type OkResult = {
    isValid: true;
};
type ErrorResult = {
    isValid: false;
    error: {
        suggestedVersion: string;
        registryNodeVersion: string;
        cliNodeVersion: string;
        code: string;
    };
};
type Result = OkResult | ErrorResult;
export default function nodeVersion(userAgent: string | undefined, nodeVersion: string): Result;
export {};