/**
 * Creates a Nexus package from the given package definition file and saves it at the given location.
 * @param {string} packageDefinition Path to the package definition file
 * @param {string} outputDir Output directory of the nexus package
 * @param {string|undefined} packageVersion Version of the package. Will override any values in the package definition file
 * @returns {boolean} THe success status of the operation: on success true, otherwise false.
 */
export declare const createPackage: (packageDefinition: string, outputDir: string, packageVersion?: string) => boolean;