export declare class Registry {
    registryUrl?: string | undefined;
    authToken?: string | undefined;
    registryEntryLocal: string;
    registryEntryGlobal: string;
    private env;
    constructor(registryUrl?: string | undefined, authToken?: string | undefined);
    /**
     * Return a properly formatted --registry string
     */
    getRegistryParameter(): string;
    /**
     * Compare this.registryUrl against npm configs and write registry entry "registry" entry to <packageDir>/.npmrc
     * if either is not equal
     *
     * @param packageDirectory
     */
    setNpmRegistry(packageDirectory: string): Promise<void>;
    /**
     * Examine the current npm configs to see if the registry has
     * the authToken set.
     * If not write the authToken to <packageDir>/.npmrc
     *
     * @param packageDirectory
     */
    setNpmAuth(packageDirectory: string): Promise<void>;
    loadNpmConfigs(): void;
    readNpmrc(packageDir: string): Promise<string[]>;
    writeNpmrc(packageDir: string, npmrc: string[]): Promise<void>;
    private normalizeRegistryUrl;
}