export type BumpType = 'major' | 'minor' | 'patch';
export interface IParsedVersion {
    major: number;
    minor: number;
    patch: number;
    prerelease: string;
}
export interface IBumpResult {
    status: 'ok';
    bumpType: BumpType;
    oldVersion: string;
    newVersion: string;
    file: string;
}
export interface IVersionService {
    /**
     * Find package.json starting from a directory.
     */
    findPackageJson(startDir?: string): string | null;
    /**
     * Parse a semver version string.
     */
    parseVersion(version: string): IParsedVersion;
    /**
     * Bump a version string.
     */
    bumpVersion(version: string, type: BumpType): string;
    /**
     * Validate bump type argument.
     */
    validateBumpType(arg: string): BumpType;
    /**
     * Execute the version bump.
     */
    bump(bumpType: BumpType, startDir?: string): IBumpResult;
}
/**
 * Creates a version service instance.
 */
export declare function createVersionService(): IVersionService;
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