Benchmark: Javascript destructuring assignment

Tests:

Extract one of methods
const module = () => { const func = (a, b) => { return a + b } const func2 = (a, b) => { return a + b } const func3 = (a, b) => { return a + b } return { func, func2, func3 } } const { func } = module() console.log(func(4, 5))
Has only one method
const module = () => { const func = (a, b) => { return a + b } return { func } } const { func } = module() console.log(func(4, 5))
Use one method
const func = (a, b) => { return a + b } console.log(func(4, 5))
Return one of many methods
const module = () => { const func = (a, b) => { return a + b } const func2 = (a, b) => { return a + b } const func3 = (a, b) => { return a + b } return { func } } const { func } = module() console.log(func(4, 5))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Extract one of methods
Has only one method
Use one method
Return one of many methods

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases.

**Benchmark Definition:**
The benchmark is designed to measure the performance of JavaScript destructuring assignment, specifically in extracting or returning functions from an object.

**Script Preparation Code:**
The code prepares a module that exports an object with multiple functions. The `module()` function returns this object, which can be destructured into individual variables using the spread operator (`...`).

**Html Preparation Code:**
There is no HTML preparation code provided, suggesting that the benchmark only measures the execution time of JavaScript code.

**Individual Test Cases:**

1. **Extract one of methods**: This test case extracts a single function from the exported object and logs its result.
2. **Has only one method**: This test case checks if the exported object has only one function by verifying that there is only one `func` property in the returned object.
3. **Use one method**: This test case uses the extracted function to perform an operation (logging a value) and measures the execution time.
4. **Return one of many methods**: This test case extracts multiple functions from the exported object, but only logs the result of using one of them.

**Library:**
There is no explicit library mentioned in the benchmark definition or test cases. However, it's likely that the `const module = () => { ... }` syntax and the use of destructuring assignment (`{ ... }`) are part of the ECMAScript standard, which is implemented by most JavaScript engines.

**Special JS Features/Syntax:**
This benchmark uses several modern JavaScript features:

* Arrow functions (`(a, b) => { ... }`)
* Destructuring assignment (`const { func } = module()`)
* Spread operator (`...`)

These features are widely supported by modern JavaScript engines, including Chrome 110.

**Pros and Cons of Different Approaches:**

1. **Extract one of methods**: This approach is straightforward but may incur overhead due to the repeated function lookups.
2. **Has only one method**: This approach can be faster if the exported object always has exactly one function property, as it avoids unnecessary function lookups.
3. **Use one method**: This approach is likely to be slower than extracting a single function because it involves calling multiple functions and logging their results.
4. **Return one of many methods**: This approach extracts multiple functions but logs only the result of using one of them. It may be faster than the other approaches if the extracted functions have similar execution times.

**Other Considerations:**

* The benchmark is likely running in a headless browser environment (e.g., Chrome) to measure JavaScript engine performance.
* The use of `const` and arrow functions suggests that the benchmark is written in modern JavaScript syntax.
* The benchmark definition is simple, which may make it less representative of real-world scenarios.

**Alternatives:**

If you're looking for alternative benchmarks or testing frameworks, consider:

1. **Benchmark.js**: A popular JavaScript benchmarking framework that supports various test cases and environments.
2. **JSPerf**: A web-based benchmarking platform that allows users to create and run JavaScript tests in a headless browser environment.
3. **V8 Perf**: A set of benchmarking tools developed by the Chrome team, which includes a script runner for testing JavaScript performance.

Related benchmarks:

Javascript destructuring assignment (version: 0)

Comparing performance of: Extract one of methods vs Has only one method vs Use one method vs Return one of many methods

Created: 3 years ago by: Registered User

Jump to the latest result

Extract one of methods

Has only one method

Use one method

Return one of many methods

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):