JSON.stringify() is 3x slower in jsc

bench.js

function getRandomStringWithLength(l) {
  let s = String(Math.random());
  while (true) {
    if (s.length >= l) {
      return s.substring(0, l);
    }
    s += ':' + String(Math.random());
  }
}

const obj = {};
for (let i = 0; i < 1000; i++) {
  obj[i] = getRandomStringWithLength(1000);
}
//obj should contains around 1M bytes after JSON.stringify
const str_arr = [];
const t1 = Date.now();
for (let i = 0; i < 1000; i++) {
  const s = JSON.stringify(obj);
  str_arr.push(s);
}
if (globalThis.print) {
  print(`Running JSON.stringify 1000 times cost ${Date.now() - t1}ms`);
} else {
  console.log(`Running JSON.stringify 1000 times cost ${Date.now() - t1}ms`);
}

bench.sh

#!/bin/bash
hermes=/your_working_copy/ios/Pods/hermes-engine/destroot/bin/hermes
jsc=/System/Library/Frameworks/JavaScriptCore.framework/Versions/Current/Helpers/jsc

echo "----hermes"
$hermes ./1.js

echo "----jsc"
$jsc ./1.js

echo "----node"
node ./1.js

result

$ bash bench.sh
----hermes
Running JSON.stringify 1000 times cost 7265ms
----jsc
Running JSON.stringify 1000 times cost 1612ms
----node
Running JSON.stringify 1000 times cost 2911ms

$ uname -a
Darwin C02GL0FZMD6R 22.4.0 Darwin Kernel Version 22.4.0: Mon Mar 6 21:00:17 PST 2023; root:xnu-8796.101.5~3/RELEASE_X86_64 x86_64 i386 MacBookPro16,1 Darwin

$hermes --version
Hermes release version: 0.11.0

$ node --version
v16.15.1