Benchmark: Bable vs Native - MeasureThat.net

Script Preparation code:

"use strict";

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

Tests:

Babel
var x = {}; x = _extends({}, x, { y: 1 });
Native
var x = {}; x.y = 1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Babel
Native

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 measures the performance difference between two JavaScript implementations: Babel (a transpiler) and Native JavaScript (the actual engine that runs JavaScript in modern browsers).

**Test Cases**

There are only two test cases:

1. **Babel**: The first test case uses Babel to run a simple JavaScript code snippet:
```javascript
var x = {};
x = _extends({}, x, {
  y: 1
});
```
This code defines an object `x` with an initial empty property, and then extends it with another object containing the key-value pair `{y: 1}`.

2. **Native**: The second test case uses Native JavaScript to run the same code snippet:
```javascript
var x = {};
x.y = 1;
```
This code defines an object `x` with a single property `y` and assigns it a value of `1`.

**What's being tested**

In both cases, the benchmark measures how long it takes for each implementation to execute the code snippet.

However, there's a subtle difference: in Babel's case, the `_extends` function is called explicitly, while in Native JavaScript, the syntax `{y: 1}` is used to assign the value directly. This difference might affect the performance of the two implementations.

**Options compared**

In this benchmark, we have two main options being compared:

A. **Babel**: The Babel implementation uses a transpiler to convert the source code into native JavaScript bytecode that can be executed by the browser's engine.
B. **Native**: The Native implementation runs the code directly in the browser's engine without any additional processing.

**Pros and Cons**

Here are some pros and cons of each approach:

A. **Babel**

Pros:

* Easier to maintain and update: Babel allows developers to write their code once and transpile it into multiple environments (e.g., Web, Node.js, etc.) with minimal changes.
* More compatible: Babel can handle older JavaScript versions and syntaxes that are not natively supported by modern browsers.

Cons:

* Slower execution: The transpilation process might introduce overhead, which could affect performance in some cases.
* Additional dependencies: Babel requires an extra dependency (the `@babel/core` library) to run.

B. **Native**

Pros:

* Faster execution: Native code can execute directly without the need for transpilation or additional processing.
* Better performance: Since the code runs natively, it's more likely to benefit from optimizations and caching mechanisms used by modern browsers.

Cons:

* More difficult to maintain: The syntax `x.y = 1` is specific to certain JavaScript engines (e.g., V8 in Chrome) and might break if updated.
* Less compatible: Native code might not work across different environments or versions of the browser.

**Library**

In this benchmark, no external library is used beyond the `_extends` function provided by Babel. The `@babel/core` library is used to transpile the JavaScript code in Babel's case, but it's not explicitly mentioned as part of the benchmark.

**Special JS feature or syntax**

There are some special features and syntaxes at play here:

* **Object assignment**: In both cases, the object assignment syntax `x = {}` and `x.y = 1` is used to initialize and update the properties of the `x` object.
* ** `_extends` function**: Babel uses a custom `_extends` function to merge objects, which might affect performance compared to the native object assignment syntax.

I hope this explanation helps! Let me know if you have any further questions.

Related benchmarks:

Bable vs Native (version: 0)

Comparing performance of: Babel vs Native

Created: 9 years ago by: Guest

Jump to the latest result

Babel

Native

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):