Clean up resources in a finally block

Clean up resources in a finally block | BeforeMerge Rules | BeforeMerge

Why this matters

If cleanup lives in the try body, an error thrown before it runs leaks the resource. A finally block runs on every exit — return, throw, or normal completion — guaranteeing release.

// Bad — connection leaks if work() throws
const conn = await pool.connect();
await work(conn);
conn.release();
 
// Good — always released
const conn = await pool.connect();
try {
  await work(conn);
} finally {
  conn.release();
}

Why This Matters

Related Rules

Catch this automatically on every PR

Why this matters