Unsupported node type "TsConstAssertion" at "config.api.bodyParser".

[typeofweb]

Verify canary release

• [X] 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 22.1.0: Sun Oct  9 20:15:09 PDT 2022; root:xnu-8792.41.9~2/RELEASE_ARM64_T6000
    Binaries:
      Node: 18.10.0
      npm: 8.19.2
      Yarn: 1.22.18
      pnpm: 7.14.0
    Relevant packages:
      next: 13.0.0
      eslint-config-next: 13.0.0
      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

When config object is exported from an API route using TypeScript, an error is thrown.

Route:

export const config = {
  api: {
    bodyParser: false as const,
  },
};

export default function handler(req, res) {
  res.status(200).json({ name: 'John Doe' })
}

Error:

warn  - Next.js can't recognize the exported `config` field in route "/pages/api/hello":
Unsupported node type "TsConstAssertion" at "config.api.bodyParser".
The default config will be used instead.
Read More - https://nextjs.org/docs/messages/invalid-page-config

Expected Behavior

No errors.

Link to reproduction

https://github.com/mmiszy/typescript-next-bug

To Reproduce

Run npm run dev and observe the error.