Fission-AI/OpenSpec · error · Error

Archive rollback would overwrite a concurrent change at ${sn

Error message

Archive rollback would overwrite a concurrent change at ${snapshot.target}.

What it means

Error "Archive rollback would overwrite a concurrent change at ${snapshot.target}." thrown in Fission-AI/OpenSpec.

Source

Thrown at src/core/archive.ts:937

          snapshot.displacedPath = undefined;
          continue;
        }
        try {
          const current = await fs.lstat(snapshot.target);
          const unchangedSymlink =
            snapshot.symlink !== undefined &&
            current.isSymbolicLink() &&
            (await fs.readlink(snapshot.target)) === snapshot.symlink;
          // Re-read to confirm the target still holds the snapshot content; a
          // mismatch means a concurrent edit, and rollback throws below rather
          // than overwrite it (CodeQL js/file-system-race is intentional here).
          const unchangedFile =
            snapshot.symlink === undefined &&
            snapshot.content !== undefined &&
            current.isFile() &&
            (await fs.readFile(snapshot.target)).equals(snapshot.content);
          if (unchangedSymlink || unchangedFile) continue;
          throw new Error(
            `Archive rollback would overwrite a concurrent change at ${snapshot.target}.`
          );
        } catch (error) {
          if ((error as NodeJS.ErrnoException).code !== 'ENOENT') throw error;
        }
      } else {
        let current;
        try {
          current = await fs.lstat(snapshot.target);
        } catch (error) {
          if (
            (error as NodeJS.ErrnoException).code === 'ENOENT' &&
            !snapshot.existed
          ) {
            continue;
          }
          throw error;
        }

View on GitHub (pinned to 6926ccb18a)

When it happens

Trigger: Thrown at src/core/archive.ts:937 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Fission-AI/OpenSpec@6926ccb18a (2026-08-25). Data as JSON: /api/errors/5cf43abdb78da5b0. Report an issue: GitHub.