Benchmark: lodash map vs Object.keys map vs Object.values

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var value = {a: 30310, b: 100303, c: 3040494};

Tests:

lodash.map
_.map(value, (v) => v)
native
Object.keys(value).map((v) => v)
Object.values
Object.values(value)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash.map
native
Object.values

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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Let's break down the provided benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Overview**

The test compares three approaches:

1. `_.map` (Lodash)
2. `Object.keys.map` (Native JavaScript)
3. `Object.values` (Native JavaScript)

All tests use a predefined value object (`value`) that contains multiple properties with different values.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for various tasks, such as array manipulation, string processing, and more. In this benchmark, `_.map` is used to create a new array by applying a transformation function to each element of the original value object.

**Native JavaScript Options**

The two native JavaScript options are:

1. **`Object.keys.map`**: This option uses the `map()` method on an array created from `Object.keys()`, which returns an array of property names from the `value` object.
2. **`Object.values`**: This option directly accesses the values of the `value` object using `Object.values()`.

**Pros and Cons**

Here are some pros and cons for each approach:

* **_.map (Lodash)**:
	+ Pros: Convenient and readable syntax, handles nested objects out of the box.
	+ Cons: Requires Lodash library, which may introduce additional overhead.
* **`Object.keys.map` (Native JavaScript)**:
	+ Pros: Faster than `_.map`, as it avoids the overhead of a function call.
	+ Cons: More verbose and less readable syntax, requires manual handling of nested objects.
* **`Object.values` (Native JavaScript)**:
	+ Pros: Fastest option, as it directly accesses the values without any additional processing.
	+ Cons: Only works for simple objects with no nested properties; can be slower than `_.map` due to object lookup.

**Other Considerations**

When evaluating these options, consider the following:

* If you need a more concise and readable syntax, `.map` (Lodash) might be a better choice.
* If you're working with large datasets or performance-critical code, `Object.values` might be the best option.
* If you need to handle nested objects, either approach can work, but `_.map` is often a more convenient and readable solution.

**Alternatives**

If you don't want to use Lodash, you could also consider using other utility libraries like:

* ES6's built-in array methods (`map()`, `forEach()`)
* Other JavaScript libraries like Underscore.js or Ramda

Alternatively, if you prefer not to use a library at all, you can implement the same functionality manually using `forEach()` or `for...of` loops.

Keep in mind that this benchmark is specific to comparing these three options on Chrome 96 running on macOS. Results may vary across different browsers, platforms, and versions.

Related benchmarks:

lodash map vs Object.keys map vs Object.values (version: 0)

lodash map vs Object.keys map vs Object.values

Comparing performance of: lodash.map vs native vs Object.values

Created: 4 years ago by: Guest

Jump to the latest result

lodash.map

native

Object.values

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):