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Access to Proxy vs Object (version: 4)
(version: 0)
Comparing performance of: Object access vs Proxy access vs Proxy with get handler access
Comparing performance of:
Object access vs Proxy access vs Proxy with get handler access
Created:
2 years ago
by:
Guest
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Script Preparation code:
object = { value: 'data' }; proxy = new Proxy(object, {}) proxyWithHandler = new Proxy(object, { get(target, prop, receiver) { return Reflect.get(target, prop, receiver) } })
Tests:
Object access
object.value;
Proxy access
proxy.value
Proxy with get handler access
proxyWithHandler.value
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Object access
Proxy access
Proxy with get handler access
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the explanation. **Benchmark Overview** The provided JSON represents a JavaScript microbenchmarking test case on MeasureThat.net, which compares the performance of accessing an object using three different methods: 1. **Object access**: Directly accessing the `value` property of the `object`. 2. **Proxy access**: Accessing the `value` property through a proxy object created using the `Proxy` constructor. 3. **Proxy with get handler access**: Accessing the `value` property through a proxy object created using the `Proxy` constructor, but with a custom getter handler. **Options Comparison** The benchmark compares the performance of these three methods because: * In some situations, using a proxy object can be more efficient than direct object access. This is especially true when working with large datasets or complex objects. * Proxies provide a way to control how properties are accessed and computed, which can be useful in certain scenarios. **Pros and Cons** Here's a brief overview of the pros and cons of each approach: 1. **Object Access**: * Pros: Simple and intuitive; no additional overhead. * Cons: May incur performance penalties for large or complex objects. 2. **Proxy Access**: * Pros: Can provide better performance for certain use cases, especially when dealing with large datasets. * Cons: Requires creating a proxy object, which can introduce additional overhead. 3. **Proxy with Get Handler Access**: * Pros: Allows customizing the behavior of property access, which can be useful in specific scenarios. * Cons: Introduces additional complexity and potential performance overhead due to the custom getter handler. **Library and Purpose** In this benchmark, the `Reflect` library is used implicitly through the `Reflect.get()` function called within the proxy's getter handler. `Reflect` provides a set of functions that allow you to access and manipulate objects in a way that is not possible with traditional JavaScript methods. **Special JS Feature or Syntax** This benchmark does not explicitly use any special JavaScript features or syntax beyond what is standard in modern JavaScript (ECMAScript 2022). However, it relies on the `Proxy` constructor and its getter handler feature, which was introduced in ECMAScript 2015.
Related benchmarks:
Access to Proxy vs Object - without reflect
Access to Proxy without Reflect, vs Object
Proxy.get(prop) vs obj[prop]
Access to Proxy vs Object vs Getters fixed
Access to Proxy vs Object no Reflect
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