Benchmark: JSON.parse() vs. js-yaml@3.13.1

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/3.13.1/js-yaml.min.js"></script>

Script Preparation code:

var jsonString = '{"key1": "val1", "key2": 7}';
var yamlString = 'key1: val1\nkey2: 7';

Tests:

JSON.parse()
var dummy = JSON.parse(jsonString);
js-yaml
var dummy = jsyaml.safeLoad(yamlString);
js-yaml normal load
var dummy = jsyaml.load(yamlString);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.parse()
js-yaml
js-yaml normal load

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36

Browser/OS: Chrome 85 on Mac OS X 10.15.6

View result in a separate tab

Test name	Executions per second
JSON.parse()	997210.1 Ops/sec
js-yaml	307538.7 Ops/sec
js-yaml normal load	306343.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what is being tested.

**Benchmark Definition**

The benchmark measures the performance of two approaches: `JSON.parse()` and `js-yaml`. The goal is to parse two different string formats into JavaScript objects.

**Options Compared**

There are three options being compared:

1. **`JSON.parse()`**: This approach uses the built-in JavaScript function `JSON.parse()` to convert a JSON-formatted string into a JavaScript object.
2. **`js-yaml` (Safe Load)**: This approach uses the `js-yaml` library, specifically the `safeLoad()` function, to parse a YAML-formatted string into a JavaScript object.
3. **`js-yaml` (Normal Load)**: This approach also uses the `js-yaml` library, but instead of `safeLoad()`, it uses the `load()` function.

**Pros and Cons**

* **`JSON.parse()`**:
	+ Pros: Fast, widely supported, and easy to use.
	+ Cons: Limited to JSON format only, may not be suitable for all types of data.
* **`js-yaml` (Safe Load)**:
	+ Pros: Allows parsing YAML-formatted strings, can handle more complex data structures.
	+ Cons: Requires the `js-yaml` library, which may add overhead.
* **`js-yaml` (Normal Load)**:
	+ Pros: Similar to Safe Load, but allows for more flexibility in handling errors.
	+ Cons: May have slightly slower performance due to the added functionality.

**Library and Purpose**

The `js-yaml` library is a popular JavaScript implementation of the YAML data serialization format. Its primary purpose is to provide a convenient way to parse and generate YAML-formatted strings into JavaScript objects. The library offers two main functions:

* `safeLoad()`: Parses a YAML-formatted string while ensuring that it conforms to the YAML 1.2 standard.
* `load()`: Similar to `safeLoad()`, but allows for more flexibility in handling errors.

**Special JS Feature/Syntax**

There is no specific JavaScript feature or syntax being tested in this benchmark.

**Other Considerations**

When choosing between these approaches, consider the type of data you're working with and your performance requirements. If you need to work with JSON-formatted strings only, `JSON.parse()` may be a good choice. If you need to parse YAML-formatted strings or handle more complex data structures, `js-yaml` might be a better option.

**Alternatives**

If you don't want to use the `js-yaml` library, there are other alternatives available:

* **YAML.js**: A lightweight JavaScript implementation of the YAML format.
* **yaml-parser**: A fast and efficient YAML parser for Node.js.
* **ajson**: A JSON/YAML hybrid parser that can handle both formats.

Keep in mind that these alternatives may have different trade-offs in terms of performance, features, and complexity.

Related benchmarks:

JSON.parse() vs. [email protected] (version: 0)

Comparing performance of: JSON.parse() vs js-yaml vs js-yaml normal load

Created: 4 years ago by: Guest

Jump to the latest result

JSON.parse()

js-yaml

js-yaml normal load

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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