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_.merge vs Object.assign
(version: 0)
Benchmark.js
Comparing performance of:
Lodash vs Native
Created:
8 years ago
by:
Guest
Go to the latest result
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
var obj1 = { adalet: false } var obj2 = { barış: false } var obj3 = { özgürlük: false }
Tests:
Lodash
_.merge({}, obj1, obj2, obj3)
Native
Object.assign({}, obj1, obj2, obj3)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Lodash
Native
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36
Browser/OS:
Yandex Browser 25 on Mac OS X 10.15.7
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=617276" width="100%" height="500px"></iframe>
Native
22.1M/s
Lodash
5.6M/s
View exact numbers
Test name
Executions per second
✓
Native
22,073,984 Ops/sec
Lodash
5,577,792 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark. **Benchmark Overview** The benchmark compares two approaches for merging objects: Lodash's `_merge` function and the native `Object.assign` method. **Options Compared** The test cases compare: 1. **Lodash's `_merge` function**: A utility function from the popular JavaScript library Lodash that merges multiple objects into a single object. 2. **Native `Object.assign` method**: A built-in JavaScript method for merging two or more objects into a new object. **Pros and Cons** Here are some pros and cons of each approach: * **Lodash's `_merge` function**: + Pros: - Can handle nested objects with ease. - Can be customized to use specific merge strategies (e.g., merging multiple properties, handling undefined values). + Cons: - Adds an external dependency on the Lodash library, which may introduce overhead. * **Native `Object.assign` method**: + Pros: - Built-in and widely supported across browsers and Node.js environments. - Faster execution time compared to Lodash's `_merge` function (although not always significant). + Cons: - Can be slower for complex object merges due to the need to create a new object with all the properties from each input object. **Other Considerations** * **Library Usage**: The benchmark uses Lodash, which is a popular utility library for JavaScript. This choice may introduce some overhead due to the additional dependency. * **Browser Support**: Both approaches are supported by most modern browsers, but it's essential to ensure compatibility with older browsers if necessary. * **Performance**: The execution time of each approach can vary depending on the size and complexity of the input objects. **Individual Test Cases** The individual test cases measure the performance of each approach: 1. `_merge` function: `_.merge({}, obj1, obj2, obj3)` This test case uses Lodash's `_merge` function to merge three simple objects (`obj1`, `obj2`, and `obj3`) into a single object. 2. Native `Object.assign` method: `Object.assign({}, obj1, obj2, obj3)` This test case uses the native `Object.assign` method to achieve the same result as Lodash's `_merge` function. **Conclusion** The MeasureThat.net benchmark provides valuable insights into the performance differences between using an external library (Lodash) and a built-in JavaScript method (Object.assign). Understanding these trade-offs can help developers make informed decisions when working with object merges in their projects.
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