How do I use try-catch in TypeScript?

How do I use try-catch in TypeScript?

In TypeScript, you can use try-catch to handle errors gracefully. Here's a basic example:

try {
    // Code that may throw an error
    let result = riskyFunction();
} catch (error) {
    // Handle the error
    console.error('An error occurred:', error);
}

Can you explain what happens in the catch block?

Sure! The catch block executes if an error is thrown in the try block. You can access the error object to understand what went wrong.

Is it possible to catch specific types of errors?

Yes, you can check the type of the error in the catch block and handle it accordingly. For example:

catch (error) {
    if (error instanceof TypeError) {
        // Handle TypeError
    } else {
        // Handle other types of errors
    }
}

What if I want to use finally with try-catch?

You can add a finally block that will execute after the try and catch blocks, regardless of whether an error occurred. Here's how:

try {
    // Code that may throw an error
} catch (error) {
    // Handle the error
} finally {
    // Code that runs after try/catch
}