export interface IOptions {
    allowIcannDomains: boolean;
    allowPrivateDomains: boolean;
    detectIp: boolean;
    detectSpecialUse: boolean;
    extractHostname: boolean;
    mixedInputs: boolean;
    validHosts: string[] | null;
    validateHostname: boolean;
}
export declare function setDefaults(options?: Partial<IOptions>): IOptions;
