Benchmark: test for object.assign helper

Tests:

spread operator
const first = {Blah: 1}; const second = {Hello: 'world'}; const result = {...first, ...second};
helper method
const UpdateObject = (obj, ...args) => { let result = Object.assign({}, obj); for(let i = 0; i < args.length; i++){ result = InternalUpdateObject(result, args[i]); } }; const InternalUpdateObject = (obj, arg) => { return Object.assign({}, obj, arg); }; const first = {Blah: 1}; const second = {Hello: 'world'}; const result = UpdateObject(first, second);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread operator
helper method

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is designed to test the performance of JavaScript objects assignment methods, specifically:

1. The spread operator (`...`): This feature allows you to expand an array or object into multiple arguments for a function, or merge two arrays/object into one.
2. A custom helper method (`UpdateObject`) that uses `Object.assign()` to update an object with additional properties.

**Options Compared**

The benchmark compares the performance of three options:

1. **Spread Operator**: Using the spread operator (`...`) to merge objects.
2. **Helper Method (UpdateObject)**: A custom function that uses `Object.assign()` to update an object with additional properties.
3. **No Helper Method**: No additional method is used, and the object is updated directly using `Object.assign()`.

**Pros and Cons of Each Approach**

1. **Spread Operator**:
	* Pros: More concise and expressive syntax, reduces boilerplate code.
	* Cons: May be slower due to function call overhead, as it involves creating a new array or object.
2. **Helper Method (UpdateObject)**:
	* Pros: Can provide more control over the update process, allows for more complex updates.
	* Cons: Adds additional function overhead, may be slower due to method call and parameter passing.
3. **No Helper Method**:
	* Pros: Avoids function call overhead and can be faster.
	* Cons: Less expressive syntax, requires more boilerplate code.

**Library/Functionality Used**

In the `UpdateObject` benchmark definition, a custom helper function is defined using `const InternalUpdateObject = (obj, arg) => { ... }`. This function uses `Object.assign()` to update an object with additional properties. The `InternalUpdateObject` function is then used within the `UpdateObject` function.

**Special JS Feature/Syntax**

There is no special JavaScript feature or syntax mentioned in this benchmark. However, it's worth noting that the spread operator (`...`) was introduced in ECMAScript 2015 (ES6).

**Alternatives**

Other alternatives for updating objects include:

* Using `Object.assign()` directly without a helper function.
* Using libraries like Lodash's `assign` method.
* Using functional programming approaches, such as using `reduce()` or `forEach()` to update the object.

These alternatives may offer different trade-offs in terms of performance, readability, and maintainability.

Related benchmarks:

test for object.assign helper (version: 0)

Comparing performance of: spread operator vs helper method

Created: 7 years ago by: Registered User

Jump to the latest result

spread operator

helper method

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):