Resource Finalization & Shutdown
Close every owned task, descriptor, permit, process, buffer, iterator, and orphan during normal completion, failure, cancellation, and service shutdown. This bundle repairs finalization ordering across async producers and finite runtime resources without masking the first error. Use it when an application stops accepting work but hangs, loses buffered output, leaks handles, or leaves work alive after shutdown reports success.
Works with every agent that reads SKILL.md — Claude Code, Cursor, Codex CLI, Gemini CLI, GitHub Copilot, Windsurf, OpenClaw, and more.
One payment, lifetime access. 8 skills unlock instantly in your library.
What's included
8 skills
Repair async-generator cleanup leaks after early break, return, throw, timeout, cancellation, or pending-next races.
Repair zombie children, kill-without-wait paths, double wait races, orphaned descendants, blocked subprocess pipes, and shutdown hangs.
Repair file descriptor and handle leaks from files, streams, watchers, pipes, subprocesses, early returns, retries, errors, and cancellations.
Repair semaphore permit leaks and over-release bugs across exceptions, cancellation, timeouts, task submission, and shutdown.
Repair thread-pool starvation from nested waits, callback affinity, fan-out, or shutdown competition without adding capacity.
Repair missing flushes, ignored finalization errors, close-order inversions, premature success, and buffered output lost before it reaches the intended sink.
Repair apps that lose jobs, events, or writes when containers restart, deployments roll, or processes receive termination signals.
Safely detect, verify, quarantine, and clean up orphaned cloud resources after failed provisioning, deletions, or database drift.
See it in action
Repair Async Generator Cleanup Bugs
Example session with this skill installed
Our TypeScript service wraps a broker subscription in two async-generator adapters. Breaking from for-await closes the outer generator, but the inner subscription keeps receiving messages and its heartbeat timer survives. A pending next() can also resolve after cancellation and publish one more value. Repair locally with a fake subscription and controlled promises. Preserve message order, buffer size, retry behavior, and timeout values; do not connect to the broker.
- Read your context and instructions
- Compiled the repair async generator
Cleanup leak found. The adapter forwards next but not return, so breaking from for-await leaves the source producer and subscription alive. The repair forwards all terminal operations, makes finalization single-owner, cancels the pending read, preserves the original error, and verifies that no value or resource survives termination.
How to use
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