export declare function getNextVersion(mode: string): Promise<string | null>;
export declare function getPreVersionForGitCommit(packageVersion: string, branchName: string, ref: string): string;
/**
 * Returns the version tag fora given `version`.
 */
export declare function getVersionTag(version: string): string;
/**
 * Returns the "prev" version according to the rules described in `run`.
 */
export declare function getPrevVersion(mode: string): Promise<string>;
/**
 * Returns the "previous" version tag according to the rules described in `run`.
 */
export declare function getPrevVersionTag(mode: string): Promise<string>;