Wrong dead code elimination with variable named Infinity

[nicolo-ribaudo]

Describe the bug

The identifier Infinity might refer to a local variable whose value is not ∞, but SWC assumes that it's always ∞.

Input code

{
  let Infinity = 3;
  if (Infinity > 4) console.log(3)
}

Config

{
  "minify": true,
  "jsc": {
    "minify": {
      "compress": {
        "dead_code": true
      }
    },
    "parser": {
      "syntax": "typescript"
    },
    "target": "es2022"
  }
}

Playground link

https://play.swc.rs/?version=1.3.70&code=H4sIAAAAAAAAA6vmUlDISS1R8MxLy8zLLKlUsFUwtgaKZaYpaMDF7BRMNBWS8%2FOK83NS9XLy0zWMNblqAbTYNkc6AAAA&config=H4sIAAAAAAAAA1WMMQ6AIAxFd09BmB0Mo5cxBKrBRCVtTSSGu1vEAaf2v9%2B%2Bu1NKb2EPc9KjYjyhL2QlJ%2FGWta1rFuKOLSIQNUyoB%2Bsnd3j4TF%2BT35n7KosWCbCVUdrZXkI0pwjkMETWvx%2B2uACXCyAzGFPa3OUHviUI6bwAAAA%3D

Expected behavior

The generated code should either be empty, or still have the if check before console.log. The console.log statement should not be executed.

Actual behavior

The generated code is

console.log(3);

Version

1.3.70

Additional context

No response

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.