What is the difference between async and sync in TypeScript?

What is the difference between async and sync in TypeScript?

In TypeScript, 'sync' refers to synchronous code execution, where tasks are completed one after another. 'Async' allows tasks to run concurrently, improving performance by not blocking the main thread.

Can you give me an example of async code in TypeScript?

Sure! Here's a simple example:

async function fetchData() {
    const response = await fetch('https://api.example.com/data');
    const data = await response.json();
    return data;
}

This function fetches data asynchronously without blocking the execution of other code.

What are the benefits of using async over sync?

Using async allows for better performance, especially in I/O operations, as it prevents the application from freezing while waiting for tasks to complete. It also improves user experience by keeping the UI responsive.

Are there any downsides to using async?

Yes, async code can be more complex to manage, especially with error handling and debugging. It may also lead to callback hell if not structured properly.