Function rollbackArtifact

src/artifacts/store.ts:241–252

(cwd: string, id: string, toVersion: number, write: WriteFn, now = new Date().toISOString())

/** Roll the "current" pointer back to an earlier (existing) version — no new file. */
export async function rollbackArtifact(cwd: string, id: string, toVersion: number, write: WriteFn, now = new Date().toISOString()): Promise<ArtifactManifest> {
  // Lock so a concurrent updateArtifact can't slip a new version in between our
  // read and write (which would drop that version when we save the manifest).
  return withLock(manifestLockPath(cwd, id), async () => {
    const manifest = await readManifest(cwd, id);
    if (!manifest) throw new Error(`Artifact "${id}" not found.`);
    if (!manifest.versions.some(v => v.v === toVersion)) throw new Error(`Artifact "${id}" has no version ${toVersion}.`);
    const updated: ArtifactManifest = { ...manifest, current: toVersion, updatedAt: now };
    await writeFileAtomic(manifestPath(cwd, id), JSON.stringify(updated, null, 2));
    return updated;
  });
}