Common async/await pitfalls in JavaScript and how to avoid them

Async/await simplifies asynchronous JavaScript but introduces several subtle bugs that can affect production applications. Using async callbacks inside array methods like map or forEach returns arrays of unresolved promises rather than data, requiring Promise.all to handle correctly. Sequential awaits inside loops process requests one at a time, slowing performance when parallel execution via Promise.all would be faster and more efficient. Silent catch blocks that swallow errors without logging or rethrowing make debugging significantly harder and should always include at least minimal error handling. Additional concerns include marking functions async unnecessarily, unhandled promise rejections crashing Node.js apps, and failing to cancel fetch requests using AbortController when they are no longer needed.