Difference between Babel and SWC compilation

[Kahor]

Describe the bug

Export functions only generate the getter for said function in transpiled SWC code, which is different than what is output by Babel, this is an issue for us as we are using the jasmine spyOn method which is not compatible with the SWC compiled code (see expected behavior)

Input code

export function getSelectorByName(
    selectorName,
) {
    return selectorName;
}

Config

{
  "jsc": {
    "parser": {
      "syntax": "typescript",
      "tsx": false
    },
    "target": "es5",
    "loose": false,
    "minify": {
      "compress": false,
      "mangle": false
    }
  },
  "module": {
    "type": "commonjs"
  },
  "minify": false,
  "isModule": true
}

Playground link (or link to the minimal reproduction)

https://play.swc.rs/?version=1.3.100&code=H4sIAAAAAAAAA0utKMgvKlFIK81LLsnMz1NITy0JTs1JTS7JL3Kq9EvMTdXgUgCCYqgYSESHS1OhGixalFpSWpSHImnNVQsAzfJPSVMAAAA%3D&config=H4sIAAAAAAAAA1WPSw7DMAhE9z6FxbrbbnqHHsJySeTIPwGRakW5e%2B3UTpsdzAw82JTWsLCFh95qWZtsiJHOvipcoph3VUBKRrbkssBtuMLNmoxnPKT964AYmlHaFPK9x8GnxDjiXQsuuqn8A20KmZD5GmxRE2ePV5zqSAjptR5mf6Qd2%2FB1W0hxYfglB%2FHcDo6fY1xoRbV%2FALu7P%2BkZAQAA

SWC Info output

Operating System:
    Platform: darwin
    Arch: x64
    Machine Type: x86_64
    Version: Darwin Kernel Version 23.3.0: Wed Dec 20 21:28:58 PST 2023; root:xnu-10002.81.5~7/RELEASE_X86_64
    CPU: (12 cores)
        Models: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz

Binaries:
    Node: 20.11.0
    npm: 10.2.4
    Yarn: N/A
    pnpm: N/A

Relevant Packages:
    @swc/core: 1.4.2
    @swc/helpers: 0.5.6
    @swc/types: 0.1.5
    

SWC Config:
    output: N/A
    .swcrc path: N/A

Next.js info:
    output: N/A

Expected behavior

Babel return the following transpiled code.

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getSelectorByName = getSelectorByName;
function getSelectorByName(selectorName) {
  return selectorName;
}

Which is working fine with jasmine SpyOn method:
spyOn(<moduleName>, "getSelectorByName")
which is not the code with the SWC transpile code which return the following error:
getSelectorByName is not declared writable or has no setter

Actual behavior

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
Object.defineProperty(exports, "getSelectorByName", {
    enumerable: true,
    get: function() {
        return getSelectorByName;
    }
});
function getSelectorByName(selectorName) {
    return selectorName;
}

Version

1.3.100

Additional context

No response

[kdy1]

#7435

[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.