Benchmark: Error handling in async await vs old way

Tests:

async await
const c = async () => { let temp = 3 throw temp } const b = async () => { let temp = 2 return temp } const a = async () => { let temp = 1 temp = await b().catch(e => { throw e }) temp = await c().catch(e => { throw e }) return temp } a().catch(e => {})
old way
const c = () => { let temp = 3 throw temp } const b = () => { let temp = 2 return temp } const a = () => { let temp = 1 try { temp = b() } catch (e) { throw e } try { temp = c() } catch (e) { throw e } return temp } try { a() } catch (e) { }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
async await
old way

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested, compared, and the pros/cons of each approach.

**Benchmark Definition**

The benchmark compares two approaches to handle errors in asynchronous code:

1. **Async/Await**: This is a modern JavaScript feature that allows writing asynchronous code that's easier to read and maintain.
2. **Old Way (Try-Catch)**: This is the traditional way of handling errors in JavaScript, using try-catch blocks.

**Options Compared**

The benchmark compares the performance of:

* **Using `async/await` with `catch`**: In this approach, the error is caught and re-thrown within the same scope.
* **Using `try/catch` blocks**: In this approach, the error is caught and re-thrown in a separate scope.

**Pros and Cons**

### Async/Await with Catch

Pros:

* Easier to read and maintain than traditional try-catch blocks
* Reduces boilerplate code

Cons:

* Can lead to nested scopes and complex error handling if not used carefully
* May not be suitable for all use cases, such as when errors need to be handled in a separate scope

### Try-Catch Blocks

Pros:

* Allows for more control over error handling and scope separation
* Suitable for use cases where errors need to be handled in a separate scope

Cons:

* More verbose than async/await with catch
* Can lead to complex code if not used carefully

**Library Used**

None mentioned in the provided JSON. However, it's worth noting that some JavaScript engines or libraries might provide additional features or optimizations for error handling.

**Special JS Feature/Syntax**

No special features or syntax are mentioned in the provided JSON. The benchmark focuses on comparing two common approaches to error handling.

**Alternative Approaches**

Other alternatives for error handling in JavaScript include:

* **Promises**: Instead of using `async/await`, developers can use promise chaining and `.catch()` methods.
* **Error Handling Libraries**: Some libraries, like Error boundaries or error handling frameworks, provide additional features and optimizations for error handling.

Keep in mind that these alternative approaches might not be as straightforward to implement as async/await with catch or traditional try-catch blocks.

Related benchmarks:

Error handling in async await vs old way (version: 0)

Comparing performance of: async await vs old way

Created: 2 years ago by: Guest

Jump to the latest result

async await

old way

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):