Dependency Updates

Bump dependencies across a project (or multiple projects), fix breaking API changes, verify tests pass, and open PRs — all concurrently.

Workflow

runPipeline(
  listOutdatedDeps.then(
    iterate().map(
      withResource({
        create: createUpdateBranch,
        action: bumpDependency.then(
          tryCatch(
            (throwError) => runTests.unwrapOr(throwError).drop()
              .then(typeCheck.unwrapOr(throwError).drop()),
            diagnoseBreakage.then(applyFix),
          ),
        ).then(createPR),
        dispose: cleanupBranch,
      }),
    ).collect(),
  ),
);

Stages

1. List outdated deps — query the package manager for available updates.
2. For each dependency — process concurrently in isolated branches:
   • Bump — update the dependency version.
   • Test and type-check — run the test suite and type checker. If either fails, diagnose and fix.
   • Open PR — create a pull request with the update.
3. Cleanup — withResource ensures the branch is cleaned up even if the update fails.

Key points

• Each dependency update runs in its own branch via withResource, so updates don't interfere.
• tryCatch catches test/type-check failures and routes to a diagnosis step rather than aborting.
• The diagnosis agent sees only the failure output — it doesn't know about other dependency updates.
• Combine with the babysitting PRs workflow to monitor the resulting PRs through CI and review.