Run results for: structuredClone vs _.cloneDeep vs JSON vs rfdc

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0

Browser: Firefox 128

Operating system: Linux

Device Platform: Desktop

Date tested: 9 months ago

Test name	Executions per second
JSON	5.1 Ops/sec
Lodash	1.5 Ops/sec
rfdc	7.9 Ops/sec
Native	2.8 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->
<script>
window.module = {};
</script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>
<script src='https://unpkg.com/rfdc@1.4.1/index.js'></script>
<script>
window.rfdc = module.exports;
</script>

Script Preparation code:

var clone = rfdc()
function generateDeterministicTree(depth = 8, breadth = 6) {
  function createLevel(level) {
    if (level >= depth) {
      // На листьях — детерминированное значение (например, строка с номером)
      return `leaf_${level}`;
    }
    if (level % 2 === 0) { // Чётный — объект
      const obj = {};
      for (let i = 0; i < breadth; i++) {
        obj[`key_${level}_${i}`] = createLevel(level + 1);
      }
      return obj;
    } else { // Нечётный — массив
      const arr = [];
      for (let i = 0; i < breadth; i++) {
        arr.push(createLevel(level + 1));
      }
      return arr;
    }
  }
  return createLevel(0);
}

// Пример использования:
var data = generateDeterministicTree(8, 6);

Tests:

JSON
JSON.parse(JSON.stringify(data))
Lodash
_.cloneDeep(data)
rfdc
clone(data)
Native
structuredClone(data)

Run results for: structuredClone vs _.cloneDeep vs JSON vs rfdc

JSON

Lodash

rfdc

Native