import { Logger } from '@nu-art/ts-common';
import { Commando_NVM } from '../plugins/nvm.js';
/**
 * NVM (Node Version Manager) service for managing Node.js installations.
 *
 * Handles installation, version management, and configuration of NVM.
 * Works with Commando_NVM plugin to execute NVM commands.
 *
 * **Features**:
 * - Install/uninstall NVM
 * - Configure shell RC files (.bashrc, .zshrc)
 * - Version management
 * - Integration with .nvmrc files
 */
export declare class Cli_NVM extends Logger {
    private _expectedVersion;
    private _homeEnvVar;
    constructor();
    get homeEnvVar(): string;
    set homeEnvVar(value: string);
    get expectedVersion(): string;
    set expectedVersion(value: string);
    /**
     * Installs NVM and configures shell RC files.
     *
     * **Behavior**:
     * - Checks if NVM is already installed with expected version
     * - Uninstalls if version mismatch
     * - Installs NVM via Commando_NVM
     * - Configures .bashrc with NVM initialization (if not already present)
     *
     *
     * @param commando - Commando_NVM instance to use for installation
     * @returns This instance for method chaining
     */
    install: (commando: Commando_NVM) => Promise<this | undefined>;
    /**
     * Checks if NVM is installed.
     *
     * Verifies both environment variable and directory existence.
     *
     * @returns True if NVM is installed
     */
    isInstalled: () => boolean;
    /**
     * Reads the required Node.js version from .nvmrc file.
     *
     * @returns Promise resolving to version string from .nvmrc
     * @throws Error if .nvmrc file doesn't exist
     */
    getRequiredNode_Version: () => Promise<string>;
    /**
     * Installs required Node.js version if not already installed.
     *
     * Reads .nvmrc, checks installed versions, and installs if missing.
     *
     * @param commando - Commando_NVM instance to use
     * @returns True if version was installed, false if already present
     */
    installRequiredVersionIfNeeded: (commando: Commando_NVM) => Promise<boolean>;
    /**
     * Uninstalls NVM by removing its directory.
     *
     * @returns Promise that resolves when uninstall completes
     */
    uninstall: () => Promise<void>;
    /**
     * Installs a specific Node.js version via NVM.
     *
     * @param commando - Commando_NVM instance to use
     * @param requiredVersion - Optional version (defaults to .nvmrc value)
     * @returns Promise that resolves when installation completes
     */
    private installVersion;
}
export declare const NVM: Cli_NVM;