import { Registry, RegistryIndex } from "./types.js";
export declare class RegistryManager {
    private registries;
    private readonly filePath;
    private readonly configDir;
    private readonly defaultName;
    private readonly defaultIndexUrl;
    private readonly minIndexRefreshMs;
    /**
     * Constructs a RegistryManager and loads registries from file.
     * Ensures config directory exists.
     */
    constructor(configPath?: string);
    private getRegistryCacheDir;
    private getRegistryIndexPath;
    private shouldRefreshIndex;
    private normalizeRepoUrl;
    private fetchAndCacheIndex;
    /**
     * Ensures that all registries have their index files downloaded in the cache.
     */
    ensureIndexes(): Promise<void>;
    /**
     * Initializes the registry list with the default registry.
     * Overwrites any existing registries in memory and file.
     */
    private initialize;
    /**
     * Loads registries from file. If file is missing or invalid, initializes defaults.
     */
    private load;
    /**
     * Saves registries to file atomically. Throws on error.
     */
    private save;
    /**
     * Returns a copy of all registries.
     */
    list(): Registry[];
    /**
     * Adds a new registry. Throws if registry name already exists or is invalid.
     * @param registry Registry to add
     */
    add(registry: Registry): Promise<void>;
    /**
     * Removes a registry by name. Throws if name is default or not found.
     * @param name Name of registry to remove
     */
    remove(name: string): void;
    /**
     * Validates the index data against the schema
     * @param indexData
     * @returns Whether the index data is valid
     */
    validateIndexSchema(indexData: RegistryIndex): boolean;
}