Incorrect enum type always 'array'

[alexandrulesi]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

When specifying ApiPropertyOptions enum the OAS now always now specifies the type to be 'array' instead of what it actually is. Seems to be happening when there is an @ApiProperty({ isArray: true }) referencing it.

This was introduced in version 7.1.8, it was working fine before

Minimum reproduction code

https://github.com/alexandrulesi/nestjs-bug-repro

Steps to reproduce

1. npm i
2. npm start
3. check console log with faulty type
4. change nestjs/swagger version to 7.1.8
5. npm i
6. check console log with correct type

Expected behavior

Enum types should be what it is, in this case string, and not array

You can also check the json dumps for comparison

Package version

7.1.11

NestJS version

No response

Node.js version

No response

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[kamilmysliwiec]

Would you like to create a PR for this issue?

[alexandrulesi]

I'm afraid I'm not sure I'll find the time at the moment

[IodizedGabe]

This appears to have been introduced by this change:
#2592

Previously, this would always assume that the enum was a string. Now that it takes into account the declared type, it can erroneously be set as an array.