export type BlockReason = "gallery" | "takedown";
export interface BlockedHost {
    host: string;
    reason: BlockReason;
    note: string;
}
export declare var GALLERY_HOSTS: BlockedHost[];
export declare var BLOCKED_HOSTS: BlockedHost[];
export declare var LOCAL_BLOCKLIST_FILE: string;
export declare function localBlockedHosts(referenceHome: string): BlockedHost[];
export declare function blockedEntryFor(host: string, entries: BlockedHost[], matches: (recordHost: string, requested: string) => boolean): BlockedHost | null;
export declare class ReferenceBlockedError extends Error {
    host: string;
    reason: BlockReason;
    constructor(entry: BlockedHost, host: string);
}