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lodash map vs. vanilla map
(version: 0)
Comparing performance of:
lodash map vs vanilla map
Created:
6 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>
Tests:
lodash map
const arr = ['1', 'two', 'thr33']; _.map(arr, i => `${i.length} letters`);
vanilla map
const arr = ['1', 'two', 'thr33']; arr.map(i => `${i.length} letters`);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
lodash map
vanilla map
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Browser/OS:
Chrome 130 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=567998" width="100%" height="500px"></iframe>
vanilla map
13.0M/s
lodash map
3.7M/s
View exact numbers
Test name
Executions per second
✓
vanilla map
13,045,360 Ops/sec
lodash map
3,728,109 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explain what's being tested, compared, and considered in this JavaScript microbenchmark. **Benchmark Overview** The benchmark compares two approaches to achieving a specific result: 1. **Lodash `map`**: Using the `_` object from the Lodash library, which provides utility functions for functional programming. 2. **Vanilla `map`**: The built-in `map()` method of JavaScript arrays. **Options Compared** In this case, we're comparing two options with slightly different implementations: * Lodash's `map` function, which uses a closure to iterate over the array and apply the provided callback function. * Vanilla's `map()` method, which also iterates over the array using closures but is more lightweight and doesn't include additional utility functions. **Pros and Cons** Here are some pros and cons of each approach: Lodash `map`: Pros: * More flexible and powerful, with access to Lodash's vast library of utility functions. * May be faster in cases where the callback function requires multiple iterations or complex logic. Cons: * Introduces an additional dependency (the Lodash library), which may not be suitable for all environments. * Adds overhead due to the presence of a separate `_` object and its dependencies. Vanilla `map`: Pros: * Lightweight and minimalist, with only the bare essentials required to perform the mapping operation. * No additional dependencies or overhead, making it more suitable for resource-constrained environments. Cons: * May be slower in cases where complex logic is required within the callback function. * Less flexible than Lodash's `map` due to its limited utility functions. **Library and Syntax** In this benchmark, we're using the following library: * Lodash (version 4.17.5): A popular JavaScript library providing functional programming utilities, including the `map()` method. The syntax used is standard JavaScript, with no special features or syntax being tested. **Alternatives** If you'd like to consider alternative approaches, here are a few options: 1. **Other libraries**: You could test other utility libraries like Moment.js (for string manipulation) or a custom implementation using `forEach()` and string concatenation. 2. **Native functions**: You might want to compare the performance of native functions like `String.prototype.repeat()` or `Array.prototype.reduce()`, which can be used for similar tasks. 3. **In-place modifications**: Consider testing whether modifying the original array in-place is faster than creating a new array with the mapped values. Keep in mind that these alternatives would require additional setup and configuration to ensure accurate results. I hope this explanation helps you understand what's being tested in this JavaScript microbenchmark!
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