/**
 * Semantic Version Utilities
 * Issue #1194: Shared 3-way version comparison (D-14 / S3-005)
 *
 * Extracted from PreflightChecker so that `commandmate update` and the
 * preflight dependency checker share a single comparison implementation.
 *
 * Note: `src/lib/version-checker.ts` intentionally is NOT reused here.
 * It imports via the `@/` alias which `tsconfig.cli.json` disables
 * (`"paths": {}`), so importing it from src/cli breaks `npm run build:cli`
 * with TS2307 (S1-010).
 *
 * @module semver
 */
/**
 * Check whether a version string can be compared numerically.
 *
 * Prerelease versions (e.g. `0.9.0-rc.1`) are NOT comparable: feeding them to
 * {@link compareVersions} would produce `NaN` parts and meaningless results.
 * Callers must treat `false` as "comparison impossible" (D-3).
 *
 * @param version - Version string (optionally `v`-prefixed)
 * @returns true if the version is a plain `X.Y.Z` release version
 */
export declare function isComparableVersion(version: string): boolean;
/**
 * Compare two version strings numerically.
 *
 * Missing parts are treated as 0 (`1.2` === `1.2.0`).
 *
 * @param a - Left version (optionally `v`-prefixed)
 * @param b - Right version (optionally `v`-prefixed)
 * @returns -1 if a < b, 0 if a === b, 1 if a > b
 */
export declare function compareVersions(a: string, b: string): number;
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