Run results for: js-yaml vs yaml-js vs yaml

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 26

Operating system: iOS 18.7

Device Platform: Mobile

Date tested: 8 months ago

Benchmark engine: Benchmark.js

js-yaml

1.1M/s

yaml-js

741K/s

yaml

741K/s

View exact numbers

Test name	Executions per second
✓ js-yaml	1,110,628 Ops/sec
yaml-js	741,233 Ops/sec
yaml	740,584 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/yamljs/0.3.0/yaml.min.js"></script>
<script>window.YAML1 = YAML</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/js-yaml/3.12.0/js-yaml.min.js"></script>
<script src="https://eemeli.org/yaml-playground/yaml.browser.js"></script>
<script>window.YAML2 = YAML</script>

Script Preparation code:

var yamlString = 'key1: val1\nkey2: 7';

Tests:

yaml-js
var dummy = YAML1.parse(yamlString);
js-yaml
var dummy = jsyaml.safeLoad(yamlString);
yaml
var dummy = YAML2.parse(yamlString)