When working with async and await, it is important to follow best practices to keep your code clean, readable, and reliable. The most essential guideline is to always handle errors properly. Since await pauses the execution of an async function until the awaited Promise settles, any rejected Promise will throw an error that must be caught. To prevent your program from crashing or behaving unpredictably, wrap your await statements in a try/catch block. This ensures you can handle errors gracefully and provide meaningful feedback or fallback logic.

Structuring your async functions is also crucial:

• Keep your functions focused;
• Avoid deeply nesting async calls;
• When you have multiple async operations that do not depend on each other, you can start them simultaneously and then await their results;
• This can improve performance and keep your code tidy.

Another important best practice is to avoid mixing .then or .catch with await inside the same function. Mixing these styles can make your code harder to read and maintain, and may lead to subtle bugs. Instead, choose one style—preferably async/await—for consistency.