Benchmark: lodash notNull test

lodash notNull test (version: 0)

lodash speed test against native js

Comparing performance of: lodash is null test for nullVar vs native is null test for nullVar vs lodash is not null test for nullVar vs native is not null test for nullVar vs lodash is null test for notNullVar vs native is null test for notNullVar vs lodash is not null test for notNullVar vs native is not null test for notNullVar

Created: 7 years ago by: Registered User

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HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var nullVar = null;
var notNullVar = 'I am not null';

Tests:

lodash is null test for nullVar
_.isNull(nullVar)
native is null test for nullVar
nullVar === null
lodash is not null test for nullVar
!_.isNull(nullVar)
native is not null test for nullVar
nullVar !== null
lodash is null test for notNullVar
_.isNull(notNullVar)
native is null test for notNullVar
notNullVar === null
lodash is not null test for notNullVar
!_.isNull(notNullVar)
native is not null test for notNullVar
notNullVar !== null

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash is null test for nullVar
native is null test for nullVar
lodash is not null test for nullVar
native is not null test for nullVar
lodash is null test for notNullVar
native is null test for notNullVar
lodash is not null test for notNullVar
native is not null test for notNullVar

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided benchmark compares the performance of JavaScript's native equality checks (`null === null`, `null !== null`) with those using the popular utility library, Lodash (`_.isNull(null)`, `_.isNull(notNullVar)`). The tests are designed to measure the speed difference between these two approaches.

**Native Equality Checks**

The native equality checks use the following syntax:

- `a == b` (strict inequality)
- `a === b` (strict equality)

These checks are implemented in JavaScript's engine and are relatively fast. However, they have some limitations:

Pros:

* Built-in, no additional dependencies required
* Typically faster than library-based implementations

Cons:

* Can be slower for certain use cases due to engine optimizations
* May not work as expected with certain data types or edge cases

**Lodash Implementation**

The Lodash implementation uses the following syntax:

- `_.isNull(a)` (checks if a value is null)

This checks are implemented in JavaScript and require the inclusion of the Lodash library. They have some advantages over native equality checks:

Pros:

* Typically faster than native equality checks for certain use cases
* More flexible and robust, handling edge cases and data types better

Cons:

* Requires additional dependencies (Lodash)
* May introduce overhead due to function calls and object lookups

**Test Case Analysis**

The benchmark includes eight test cases, each comparing a native equality check with its Lodash equivalent. The tests are designed to cover different scenarios:

- `_.isNull(null)` vs `null === null`
- `_.isNull(notNullVar)` vs `notNullVar === null`

For example, the first test case measures the speed of checking if `null` is equal to itself using both methods.

**Benchmark Result Analysis**

The provided benchmark result shows the execution per second for each test case. The top three results are:

1. `native is not null test for notNullVar`: 4297838 executions/second
2. `lodash is not null test for notNullVar`: 4470288 executions/second
3. `native is not null test for nullVar`: 4389705 executions/second

The results indicate that, in this specific scenario, the Lodash implementation outperforms the native equality checks by a small margin. However, it's essential to note that these results may vary depending on the specific use case and environment.

**Alternatives**

Other alternatives to benchmark JavaScript performance include:

* **V8 Benchmark Suite**: A collection of benchmarks for V8's JavaScript engine
* **JSHint**: A popular tool for linting and testing JavaScript code, also includes some performance-related tests
* **JavaScriptPerf**: A JavaScript benchmarking library that allows users to run their own custom benchmarks

Keep in mind that the choice of benchmarking tool or library depends on your specific requirements and goals.

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