Describe the bug

When trying to assign AxiosError.cause to unknown I get the following error, which does not happen with a normal Error class.

TS2739: Type  {}  is missing the following properties from type  Error :  name, message 

To Reproduce

Passing in ErrorOptions to a helper function we can recreate the issue. Currently I will need to add // @ts-ignore to get around this issue.

Code snippet

export const setCauseError = (
  error: AxiosError,
  options?: ErrorOptions
): Error => {
  if (options?.cause) {
    error.cause = options.cause
  }
  return error
}

Expected behavior

No TS error should be emitted to my IDE/type checking.

Axios Version

1.5.0

Adapter Version

n/a

Browser

n/a

Browser Version

n/a

Node.js Version

18.16.0

OS

macOS 13.5.1

Additional Library Versions

typescript 5.1.6

Additional context/Screenshots

With Error:

With unknown: