declare const IpAddressBrand: unique symbol;
declare const IpV4Brand: unique symbol;
declare const IpV6Brand: unique symbol;
declare const CidrBrand: unique symbol;
export type IpAddress = string & {
    readonly [IpAddressBrand]: true;
};
export type IpV4 = IpAddress & {
    readonly [IpV4Brand]: true;
};
export type IpV6 = IpAddress & {
    readonly [IpV6Brand]: true;
};
export type Cidr = string & {
    readonly [CidrBrand]: true;
};
export type IpKind = "ipv4" | "ipv6";
export type NonEmptyReadonlyArray<T> = readonly [T, ...T[]];
export type ResolutionOutcome = {
    readonly ok: true;
    readonly ip: IpAddress;
    readonly source: ResolutionSource;
    readonly hopIndex?: number;
} | {
    readonly ok: false;
    readonly reason: ResolutionFailure;
    readonly attempted: ResolutionSource;
};
export type ResolutionSource = "single-header" | "xff-rightmost-untrusted" | "xff-leftmost-explicit-insecure" | "forwarded-rightmost-untrusted" | "conn-info" | "none";
export type ResolutionFailure = "no-header" | "header-empty" | "header-malformed" | "all-hops-trusted" | "no-untrusted-hop" | "conn-info-unavailable" | "header-too-large" | "too-many-entries";
export declare const MAX_HEADER_BYTES: number;
export declare const MAX_CHAIN_ENTRIES = 50;
export {};
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