Run results for: JSON.parse() vs. js-yaml 4.1.0 vs. yaml 2.3.1

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

JSON.parse()

1.9M/s

js-yaml

372K/s

yaml

54K/s

View exact numbers

Test name	Executions per second
✓ JSON.parse()	1,910,000 Ops/sec
js-yaml	371,638 Ops/sec
yaml	54,353 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/4.1.0/js-yaml.min.js"></script>
<script type="module">
import yaml from "https://cdn.skypack.dev/pin/yaml@v2.3.1-T7Nbcyc9CBdWzao77zGJ/mode=imports,min/optimized/yaml.js";
window.yaml = yaml;
</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.load(yamlString);
yaml
var dummy = yaml.parse(yamlString)

Run results for: JSON.parse() vs. js-yaml 4.1.0 vs. yaml 2.3.1

Compare popular yaml parsers with native JSON parser

JSON.parse()

js-yaml

yaml