export type DoctorRegistryStatus = "available" | "malformed" | "timeout" | "unavailable";
export type DoctorRegistryDeprecation = "none observed" | "present" | "unavailable";
export type DoctorRegistryChannelState = "DRIFT" | "MATCH" | "RETIRED" | "UNAVAILABLE";
export type DoctorRegistryResponse = {
    readonly status: "available";
    readonly text: string;
} | {
    readonly status: Exclude<DoctorRegistryStatus, "available">;
};
export type DoctorRegistryInput = {
    readonly deprecation: DoctorRegistryResponse;
    readonly distTags: DoctorRegistryResponse;
    readonly installedVersion: unknown;
};
export type DoctorRegistrySummary = {
    readonly channelStates: {
        readonly latest: DoctorRegistryChannelState;
        readonly legacy: DoctorRegistryChannelState;
        readonly next: DoctorRegistryChannelState;
        readonly staging: DoctorRegistryChannelState;
    };
    readonly channels: {
        readonly installed: string;
        readonly latest: string;
        readonly legacy: string;
        readonly next: string;
        readonly staging: string;
    };
    readonly deprecation: DoctorRegistryDeprecation;
    readonly diagnostics: readonly string[];
    readonly status: DoctorRegistryStatus;
    readonly text: string;
};
export declare function isDoctorRegistryVersion(value: unknown): value is string;
export declare function readDoctorRegistry(input: DoctorRegistryInput): DoctorRegistrySummary;