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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.2

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

JSON.parse()

13.6M/s

js-yaml

947K/s

yaml

135K/s

View exact numbers

Test name	Executions per second
✓ JSON.parse()	13,610,606 Ops/sec
js-yaml	946,818 Ops/sec
yaml	135,147 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