cannot reassign to a class

[Janpot]

Verify canary release

• I verified that the issue exists in the latest Next.js canary release

Provide environment information

    Operating System:
      Platform: darwin
      Arch: arm64
      Version: Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:29 PDT 2022; root:xnu-8020.121.3~4/RELEASE_ARM64_T8101
    Binaries:
      Node: 16.17.0
      npm: 8.15.0
      Yarn: 1.22.19
      pnpm: 7.14.2
    Relevant packages:
      next: 13.0.4
      eslint-config-next: 13.0.3
      react: 18.2.0
      react-dom: 18.2.0

What browser are you using? (if relevant)

No response

How are you deploying your application? (if relevant)

No response

Describe the Bug

Noticed this while trying out transpilePackages on the monaco-editor package.

It contains some code That reassigns to a class, simple reproduction:

class X {}
X = {};

I believe this type of code is generated by tsc for namespaces in https://github.com/microsoft/vscode/blob/63f8550155e5ac7b83e1828002e272e6e44f50d3/src/vs/base/common/color.ts#L485. See this typescript playground example

Next.js throws an error for this code

   x cannot reassign to a class
     ,-[16:1]
  16 | class X {}
     :       |
     :       `-- class name
  17 | 
  18 | // @ts-expect-error
  19 | X = {};
     : ^
     `----

yet this is valid javascript

Expected Behavior

No error, this is valid javascript

Link to reproduction - Issues with a link to complete (but minimal) reproduction code will be addressed faster

https://codesandbox.io/s/suspicious-bell-7nonzn?file=/pages/index.js

To Reproduce

Open the code sandbox, look at the terminal

related swc-project/swc#6471

[Janpot]

Fixed in canary

[github-actions]

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.