type DnsLookupResult = {
    address: string;
    family: number;
};
type DnsLookup = (hostname: string, options: {
    all: true;
    verbatim: true;
}) => Promise<DnsLookupResult[]>;
declare function isBlockedHostname(hostname: string): boolean;
declare function assertSafeOutboundUrl(rawUrl: string, options?: {
    allowHttp?: boolean;
    allowPrivate?: boolean;
}): URL;
declare function isBlockedIpAddress(address: string): boolean;
declare function pinUrlToAddress(url: URL, address: string): URL;
interface ResolvedOutboundUrl {
    url: URL;
    addresses: string[];
}
declare function resolveSafeOutboundTarget(rawUrl: string, options?: {
    allowHttp?: boolean;
    resolveDns?: boolean;
    allowPrivate?: boolean;
}): Promise<ResolvedOutboundUrl>;
declare function assertSafeOutboundUrlResolved(rawUrl: string, options?: {
    allowHttp?: boolean;
    resolveDns?: boolean;
    allowPrivate?: boolean;
}): Promise<URL>;
declare function setDnsLookupForTests(lookupFn: DnsLookup): void;
declare function resetDnsLookupForTests(): void;
export type { ResolvedOutboundUrl };
export { assertSafeOutboundUrl, assertSafeOutboundUrlResolved, isBlockedHostname, isBlockedIpAddress, pinUrlToAddress, resetDnsLookupForTests, resolveSafeOutboundTarget, setDnsLookupForTests, };