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Lodash merge vs native spread
(version: 0)
Comparing performance of:
Lodash merge vs Native
Created:
4 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
Tests:
Lodash merge
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = _.merge(a, b);
Native
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = {...a,...b};
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Lodash merge
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):
I'd be happy to help you understand the benchmark and its test cases. **What is being tested?** MeasureThat.net is testing two approaches for merging two objects in JavaScript: using the `lodash.merge` function and using the native spread operator (`...`). The goal of this benchmark is to compare the performance of these two methods on a small set of test cases. **Options compared:** The two options being compared are: 1. **Lodash merge**: This uses the `_.merge()` function from the Lodash library, which recursively merges two objects. 2. **Native spread operator**: This uses the spread operator (`...`) to merge two objects. **Pros and cons of each approach:** 1. **Lodash merge**: * Pros: + Well-tested and stable library with a large user base. + Handles complex merging scenarios, such as nested objects. * Cons: + Adds an external dependency (Lodash) to the benchmark, which may not be desirable for all users. + May incur additional overhead due to function call and library loading. 2. **Native spread operator**: * Pros: + Lightweight and efficient, as it only requires a simple operation. + Does not add any external dependencies or overhead. * Cons: + Only supports merging two objects of the same type (both objects). + May not handle complex merging scenarios, such as nested objects. **Library used:** The `lodash.merge` function is part of the Lodash library. Lodash is a popular utility library for JavaScript that provides a wide range of functions and methods for tasks like array manipulation, string manipulation, and object manipulation. **Special JS feature or syntax:** There are no special JavaScript features or syntax being tested in this benchmark. The test cases only involve basic object merging using the `lodash.merge` function and the native spread operator. **Other alternatives:** If you need to merge objects frequently, other alternatives to Lodash's `merge` function include: * The `Object.assign()` method (native) * The `_.merge()` functions from other JavaScript libraries (e.g., underscore.js, moment.js) However, it's worth noting that the native spread operator is becoming increasingly popular and efficient in modern JavaScript environments. I hope this explanation helps! Let me know if you have any further questions.
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