export type AdminHostnameSource = "cloudflared-config.yml";
export interface AdminHostnameHit {
    hostname: string;
    isApex: boolean;
    source: AdminHostnameSource;
}
export interface AdminHostnameMiss {
    hostname: null;
    isApex: null;
    source: null;
    reason: "no-admin-host";
}
export type AdminHostnameResult = AdminHostnameHit | AdminHostnameMiss;
export declare function resolveAdminHostname(configDir: string): AdminHostnameResult;
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