ref is not defined when destructuring class method argument with certain browser targets

[abrenneke]

Describe the bug

When the following conditions are true:

• You are exporting a class
• It has a method with a destructured object, that has at least 2 properties
• The argument has a default value (any)

A ref variable is referenced outside the class, and the variable does not exist at that point in the code execution.

This only happens with certain targets:

• Chrome >= 46
• Chrome >= 47
• Chrome >= 48
• Chrome >= 49
• Chrome >= 50

Input code

export class F {
  a({ b, c } = undefined) {}
}

Bad output code

var _ref = ref === void 0 ? undefined : ref;
export class F {
    a(ref) {
        let b = _ref.b, c = _ref.c;
    }
}

Config

{
  "jsc": {
    "parser": {
      "syntax": "typescript",
      "tsx": false
    },
    "loose": false,
    "minify": {
      "compress": false,
      "mangle": false
    },
  },
  "module": {
    "type": "es6"
  },
  "minify": false,
  "isModule": true,
  "env": {
    "targets": "Chrome >= 50"
  }
}

Playground link (or link to the minimal reproduction)

https://play.swc.rs/?version=1.3.101-nightly-20231201.1&code=H4sIAAAAAAAAA0utKMgvKlFIzkksLlZwU6jmUlBI1KhWSNJRSFaoVbBVKM1LSU3LzEtN0VSoruWq5QIAmqfhMjAAAAA%3D&config=H4sIAAAAAAAAA2WOvQ7CMAyE9z5F5JmBBQYkWJh5iKi4JSh%2FslNEVPXdSdKmFLFY8Xfny42NEPDkFk5iTM%2B0eEmMtO6JcLRBvhOBED1yS8oH2FU1cJY6qRkLmmYFtHOMVVmYUVZ1cZvdOuMJmX%2BN2Sptr%2FE%2FuQww7j4UdSmdi%2BWCyEf4mupvazIovtXLQMPM0L42QZJ6DLkOXB%2FkDIrLWRz2JbSZPl6W03suAQAA

SWC Info output

No response

Expected behavior

Generates valid code that does not SyntaxError

Actual behavior

Generates code that is invalid to run

Version

1.3.100

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.