/**
 * Install the core LM module
 * @param root The root directory to install the packages in
 * @param packageName The package to install
 * @param packages Additional packages to install
 */
export declare function install(root: string, packageName: string, ...packages: string[]): Promise<void>;
/**
 * Checks whether a package with the specified name is installed
 * @param externalRoot The path to check for external packages
 * @param packageName The package to check for
 * @param externalOnly Whether to only check for external packages
 * @returns Whether the specified package is installed
 */
export declare function isInstalled(externalRoot: string, packageName: string, externalOnly?: boolean): boolean;
/**
 * Retrieves the name of the package without version number
 * @param packageName The name of the package possibly including version number
 * @returns The name of the package
 */
export declare function getPackageNameWithoutVersion(packageName: string): string;
/**
 * Retrieves the absolute path to a package with the given name
 * @param root The root directory to look for packages in
 * @param packageName The package to get the path of
 * @returns The path to the package
 * @throw Throws an error if no such path exists
 */
export declare function getInstalledPath(root: string, packageName: string): string;
/**
 * Retrieves the absolute path to a package with the given name, if externally installed
 * @param root The root directory to look for packages in
 * @param packageName The package to get the path of
 * @returns The path to the package
 * @throw Throws an error if no such path exists
 */
export declare function getExternalInstallPath(root: string, packageName: string): string;
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