<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
const arr = [[{ name: 'bort' }, { name: 'dort' }, { name: 'bort' }, { name: 'dort' }], [{ name: 'bort' }, { name: 'dort' }, { name: 'bort' }, { name: 'dort' }]];
_.flatten(arr);
const arr = [[{ name: 'bort' }, { name: 'dort' }, { name: 'bort' }, { name: 'dort' }], [{ name: 'bort' }, { name: 'dort' }, { name: 'bort' }, { name: 'dort' }]];
arr.flat();
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Lodash with objects | |
Native flat with objects |
Test name | Executions per second |
---|---|
Lodash with objects | 4689173.5 Ops/sec |
Native flat with objects | 828872.4 Ops/sec |
Let's dive into the explanation.
Benchmark Definition JSON
The provided JSON represents a JavaScript benchmark test case for measuring the performance of two approaches: using Lodash's flatten()
function and native flat()
method with nested objects.
Options Compared
Two options are compared in this benchmark:
flatten()
function: This is a utility function from the popular JavaScript library Lodash that flattens an array (or any other iterable) into a one-dimensional array.flat()
method: This is a native JavaScript method introduced in ECMAScript 2019 (ES2020) that can be used to flatten arrays.Pros and Cons of Each Approach
Here are the pros and cons of each approach:
flatten()
function:flat()
method:Library Used
In this benchmark, Lodash is used as a third-party library. The flatten()
function is a key part of Lodash's utility belt, providing a simple way to flatten arrays into one-dimensional arrays.
Special JavaScript Feature or Syntax
No special JavaScript features or syntax are mentioned in the provided benchmark definition or test cases. However, it's worth noting that ES2020 introduced several new features and methods, including flat()
and other array-related improvements.
Other Alternatives
If you're interested in exploring alternative approaches to flatten arrays, some other options include:
flatMap()
or reduce()