/**
 * Semver ordering for install-currency decisions ("is the published version
 * newer than the one running?"). Fjall versions are lerna-minted
 * `MAJOR.MINOR.PATCH` with an optional prerelease; build metadata is ignored
 * per the spec. Pure and client-safe — the webapp can compare too.
 *
 * Two sibling parsers exist with deliberately different semantics — do not
 * consolidate onto this one: `util/src/docker/DockerCli.daemon.ts` truncates
 * prerelease (daemon versions like `24.0.7-ce` gate on the core only), and
 * `deploy-core` `engineCompat.ts#parseEngineVersion` refuses malformed input
 * outright so a corrupted constraint cannot vacate the engine gate. This one
 * compares prerelease per spec §11, which dist-tag currency needs.
 */
export interface ParsedSemver {
    readonly core: readonly [number, number, number];
    readonly prerelease: readonly string[];
}
export declare function parseSemver(version: string): ParsedSemver | undefined;
/** Spec §11 precedence; -1 / 0 / 1 like `Array.prototype.sort` comparators. */
export declare function compareSemver(a: ParsedSemver, b: ParsedSemver): number;
/**
 * Whether `candidate` is strictly newer than `current`. Unparseable input on
 * either side is "not newer" — a currency nudge must never fire on garbage.
 */
export declare function isNewerVersion(candidate: string, current: string): boolean;