Function assertSnapshotPrerelease

packages/bumpy/src/core/snapshot.ts:163–167

(version: string)

/** Guard: a snapshot version must be a valid prerelease (never collides with a stable release) */
export function assertSnapshotPrerelease(version: string): void {
  if (semver.prerelease(version) === null) {
    throw new Error(`Snapshot version "${version}" is not a prerelease — refusing to publish (would land on @latest).`);
  }
}