Perf: structuredClone runs slow compared to bun and node

[CrazyboyQCD]

OS: Windows 11
deno version: 1.46.1
bun version: 1.1.25
node version: 21.5.0
Test script:

const testArray = [{
  description: 'Random description.',
  testNumber: 123456789,
  testBoolean: true,
  testObject: {
    testString: 'test string',
    testNumber: 12345
  },
  testArray: [{
    myName: 'test name',
    myNumber: 123245
  }]
},{
  description: 'Random description.',
  testNumber: 123456789,
  testBoolean: true,
  testObject: {
    testString: 'test string',
    testNumber: 12345
  },
  testArray: [{
    myName: 'test name',
    myNumber: 123245
  }]
    }];

let testCopy = null;

testCopy = structuredClone(testArray);

Result:

hyperfine -N --warmup=100 "node test.js" "bun run test.js" "deno run test.js"

Benchmark 1: node test.js
  Time (mean ± σ):      34.6 ms ±   0.8 ms    [User: 18.9 ms, System: 14.4 ms]
  Range (min … max):    33.4 ms …  37.4 ms    87 runs

Benchmark 2: bun run test.js
  Time (mean ± σ):      43.5 ms ±   1.4 ms    [User: 18.4 ms, System: 26.3 ms]
  Range (min … max):    41.6 ms …  48.0 ms    63 runs

Benchmark 3: deno run test.js
  Time (mean ± σ):      93.5 ms ±   1.4 ms    [User: 21.7 ms, System: 18.1 ms]
  Range (min … max):    90.4 ms …  96.1 ms    31 runs

Summary
  node test.js ran
    1.26 ± 0.05 times faster than bun run test.js
    2.70 ± 0.08 times faster than deno run test.js

It seems that other 2 runtime implements it in native.