Benchmark: jfsdgdgg - MeasureThat.net

Tests:

Object.getOwnPropertyDescriptors
const obj = { a: "one", b: "two", c: "three" }; const last = Object.create( null ); Object.freeze( Object.create( last, Object.getOwnPropertyDescriptors( obj ) ) );
Object.assign
const obj = { a: "one", b: "two", c: "three" }; const last = Object.create( null ); Object.freeze( Object.assign( Object.create( last ), obj ) );

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.getOwnPropertyDescriptors
Object.assign

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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I'll break down the provided benchmarking data for you.

**Benchmark Overview**

MeasureThat.net is a platform that allows users to create and run JavaScript microbenchmarks. The benchmark in question consists of two test cases: `Object.getOwnPropertyDescriptors` and `Object.assign`. These tests aim to measure the performance differences between these two methods of creating objects with specific properties.

**Options Compared**

The two options being compared are:

1. **`Object.create()`**: This method creates a new object based on an existing object, inheriting its properties. The `last` object is used as the prototype for the new object.
2. **`Object.assign()`**: This method copies the properties of one or more source objects to a target object.

**Pros and Cons**

*   **`Object.create()`**:
    *   Pros:
        +   More concise syntax
        +   Easier to understand, especially when working with inheritance hierarchies
    *   Cons:
        +   Can be slower due to the overhead of creating a new object and setting its prototype
        +   May not work well with complex inheritance scenarios
*   **`Object.assign()`**:
    +   Pros:
        -   More flexible syntax, allowing for multiple source objects to be combined
        -   Works well with complex inheritance scenarios
    *   Cons:
        +   Can be slower due to the overhead of creating a new object and copying its properties
        +   May have performance issues if the number of properties being copied is extremely large

**Library Usage**

In both test cases, the `Object.create()` method is used in combination with `Object.getOwnPropertyDescriptors()`. The `Object.create()` method creates an empty object, which is then extended using the `Object.getOwnPropertyDescriptors()` method to copy the properties from the original object. This approach allows for a more explicit way of creating objects with specific properties.

**Special JavaScript Features or Syntax**

In this benchmark, no special JavaScript features or syntax are used beyond the standard methods and properties of the ECMAScript language specification.

**Other Alternatives**

If you were to rewrite these tests using alternative approaches, some options could include:

*   Using `Object.new()` instead of `Object.create()`: While `Object.create()` is a more concise way to create objects with inheritance hierarchies, `Object.new()` can provide similar results and may be faster in some cases.
*   Using a library like Lodash's `assignIn` method: If you want to avoid the overhead of creating new objects and copying properties, using a library like Lodash can simplify your code and improve performance.

However, for this specific benchmark, it seems that `Object.create()` is being used to create an object with a prototype chain that mirrors the original object's inheritance hierarchy. The use of `Object.create()` in combination with `Object.getOwnPropertyDescriptors()` allows for a more explicit way of creating objects with specific properties, which makes the test results accurate and reliable.

Overall, understanding these benchmarks requires knowledge of JavaScript object creation methods, inheritance hierarchies, and performance considerations when working with complex data structures.

Related benchmarks:

jfsdgdgg (version: 0)

Comparing performance of: Object.getOwnPropertyDescriptors vs Object.assign

Created: 5 years ago by: Guest

Jump to the latest result

Object.getOwnPropertyDescriptors

Object.assign

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):