Function normalizeVersion

src/upgrade/index.ts:194–197

(v: string)

/** `0.9.9` / `v0.9.9` → `v0.9.9` (release tags are v-prefixed). */
export function normalizeVersion(v: string): string {
  const t = v.trim();
  return t.startsWith('v') ? t : `v${t}`;
}

/** Strip a leading `v`: `v0.9.9` → `0.9.9`. */
export function stripV(v: string): string {