What is top-level await in JavaScript?
Using await at the top level of an ES module (not inside an async function). Available in ES2022. Useful for initializing modules with async operations. In CommonJS or older environments, wrap in an async function.
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More FAQs in async/await Best Practices in JavaScript
Always handle errors with try/catch, use Promise.all for parallel operations, for...of for sequential, never await in forEach, limit concurrency for large sets, use Promise.allSettled for partial failure, do not fire and forget, and prefer async/await over .then chains.
Use try/catch around the await calls. If any await rejects, the catch block runs with the rejection reason. try/catch also catches thrown errors inside the try block.
Prefer async/await. It is more readable (looks synchronous), has better stack traces (easier debugging), and works well with loops (for...of with await). Use .then chains only for complex chaining or when async/await is not available.
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