Benchmark: Proxy vs Proxy + Reflect + direct

Script Preparation code:

var object = {
	type: "mytype",
  	size: 34,
  	data: [1,2,3,4,5,76,8,8,9,9,90,0,0,0],
  	max: function() { return Math.max(...this.data);},
  	min: function() { return Math.min(...this.data);},
  	getData: function() { return this.data; }
}

var proxy = new Proxy(object, {
	get: (t, prop) => prop === "getData"
  		? () => t.data
  		: prop in t 
  		? t[prop] 
  		: () => "unknown"
});

var reflect = new Proxy(object, {
	get: (t, prop, receiver) => prop === "getData"
  		? () => t.data
  		: prop in t 
  		? Reflect.get(t, prop, receiver)
  		: () => "unknown"
});

Tests:

dierct
object.min(); object.max(); object.getData();
proxy
proxy.min(); proxy.max(); proxy.getData();
proxy + reflect
reflect.min(); reflect.max(); reflect.getData();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
dierct
proxy
proxy + reflect

Fastest: N/A

Slowest: N/A

Latest run results:

No previous 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 what is being tested in the provided benchmark.

The benchmark compares three approaches to access and manipulate data on an object:

1. **Direct Access**: This approach uses the dot notation (e.g., `object.getData()`) or bracket notation (e.g., `object['getData']`) to directly access the methods and properties of the object.
2. **Proxy**: A proxy is a new object that wraps around the original object, intercepting and modifying requests to its own properties. In this case, the proxy is created using the `Proxy` constructor and defines a getter function for the `getData` property. When accessing `proxy.getData()`, the getter function returns the actual value of `object.data`.
3. **Proxy + Reflect**: This approach combines the proxy mechanism with the Reflect API, which provides additional methods for manipulating objects. The reflect version of the proxy uses `Reflect.get` to retrieve the value of the `getData` property.

**Pros and Cons:**

* **Direct Access**:
	+ Pros: Simple, intuitive, and widely supported.
	+ Cons: May not provide any benefits in terms of performance or security when accessing simple properties, and can be vulnerable to object mutation attacks if the property is not properly protected.
* **Proxy**:
	+ Pros: Provides a more secure way to access an object's properties by intercepting requests and returning sanitized values. Can also help prevent object mutations by ensuring that changes are propagated through the proxy.
	+ Cons: May introduce additional overhead due to the creation of a new object, which can be a performance bottleneck for large datasets or complex objects. Additionally, some browsers may not support proxies natively, requiring polyfills or workarounds.
* **Proxy + Reflect**:
	+ Pros: Combines the benefits of both approaches by leveraging the proxy mechanism and providing additional features from the Reflect API (e.g., `Reflect.get`). This can lead to more efficient and robust access patterns.
	+ Cons: Adds complexity and may require more careful consideration when setting up and using the proxy, as well as any necessary polyfills or workarounds.

**Library Usage:**

* The benchmark uses the `Proxy` constructor, which is a built-in JavaScript object. It does not rely on any external libraries beyond what is implicitly required by JavaScript itself.
* No other libraries are mentioned in the provided code snippets.

**Special JS Features or Syntax:**

The benchmark takes advantage of some advanced JavaScript features:

* **Proxy**: The `Proxy` constructor and its getter functions are used to create a proxy object that intercepts requests to specific properties. This requires understanding of how proxies work in JavaScript.
* **Reflect API**: The `Reflect.get` method is used in the proxy + reflect approach, which provides additional functionality for manipulating objects. This requires familiarity with the Reflect API and its features.

**Alternatives:**

If you're looking for alternatives to this benchmark, consider exploring other approaches to access and manipulate data on objects, such as:

* **ES6 Proxy Polyfills**: For browsers that do not natively support proxies, using polyfills like `proxy-polyfill` can provide similar functionality.
* **Object Wrappers**: Instead of creating a proxy object, you could use a third-party library or implement an object wrapper to intercept and modify requests to specific properties.

Related benchmarks:

Proxy vs Proxy + Reflect + direct (version: 0)

Comparing performance of: dierct vs proxy vs proxy + reflect

Created: 6 years ago by: Guest

Jump to the latest result

dierct

proxy

proxy + reflect

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):