/**
 * Tiny semver comparator. We refuse to pull in `semver` for a single
 * compareVersions() call; the surface here is intentionally narrow.
 *
 * Supports `MAJOR.MINOR.PATCH` and `MAJOR.MINOR.PATCH-PRERELEASE` (semver §11).
 * Build metadata (`+...`) is rejected — releases shouldn't ship with it and
 * it'd only confuse equality.
 */
export interface ParsedVersion {
    major: number;
    minor: number;
    patch: number;
    /** Empty string when there is no prerelease (= a higher precedence release). */
    prerelease: string;
}
export declare function parseVersion(input: string): ParsedVersion;
/** -1 if a < b, 0 if equal, +1 if a > b. */
export declare function compareVersions(a: string, b: string): number;