[Bug]: missing quotation mark when use asciiOnly format in rspack 0.4.0-canary

[9aoy]

System Info

System:
OS: macOS 12.5.1
CPU: (10) arm64 Apple M1 Pro
Memory: 92.39 MB / 32.00 GB
Shell: 5.8.1 - /bin/zsh
Binaries:
Node: 18.18.2 - /usr/local/bin/node
Yarn: 1.22.19 - /usr/local/bin/yarn
npm: 9.8.1 - /usr/local/bin/npm
pnpm: 7.29.1 - /usr/local/bin/pnpm
Browsers:
Chrome: 119.0.6045.159
Safari: 15.6.1
npmPackages:
@rspack/cli: 0.4.0-canary-d45e3e0-20231128075052 => 0.4.0-canary-d45e3e0-20231128075052
@rspack/core: 0.4.0-canary-d45e3e0-20231128075052 => 0.4.0-canary-d45e3e0-20231128075052

Details

charset format error:

input code:

window.b = {
  Д: "A",
  Å: "A",
  Ð: "D",
  Þ: "o",
  å: "a",
  ð: "d",
  þ: "o",
  𝒩: "a",
};

expect output:

window.b = {
    "\u0414": "A",
    "\xc5": "A",
    "\xd0": "D",
    "\xde": "o",
    "\xe5": "a",
    "\xf0": "d",
    "\xfe": "o",
    "\uD835\uDCA9": "a"
};

actually:

window.b = {
    "\u0414": "A",
    "\xc5": "A",
    "\xd0": "D",
    "\xde": "o",
    "\xe5": "a",
    "\xf0": "d",
    "\xfe": "o",
    \uD835\uDCA9: "a" // missing quotation mark
};

Reproduce link

https://github.com/9aoy/rspack-issue-reproduce/tree/main/rspack-charset

Reproduce Steps

1. pnpm install
2. pnpm build
3. open dist/main.js