/**
 * Gets the package version.
 * @param basedir The base directory.
 */
export declare function getPackageVersion(basedir: string): string | null;
/**
 * Determines if a version is supported
 * @param moduleVersion a version in [semver](https://semver.org/spec/v2.0.0.html) format.
 * @param [supportedVersions] a list of supported versions ([semver](https://semver.org/spec/v2.0.0.html) format).
 */
export declare function isSupportedVersion(moduleVersion: string, supportedVersions?: string[]): boolean;
/**
 * Adds a search path for plugin modules. Intended for testing purposes only.
 * @param searchPath The path to add.
 */
export declare function searchPathForTest(searchPath: string): void;