Worked on the CKS-Systems/manifest repository to address a build system issue affecting ECMAScript Module (ESM) output. Focused on JavaScript development, the work involved correcting the ESM build process to ensure that generated artifacts matched expectations across different environments. This fix improved compatibility for downstream consumers and reduced unexpected build-time issues, supporting more reliable deployments. The update included a patch-level version bump to maintain clear versioning hygiene and traceability. By concentrating on build systems and JavaScript, the contribution enhanced reproducibility and reliability in the release process, even though no new features were added during the period under review.