Wrong generated type when processing enums containing "null"

[FedeBev]

Hi there,

with swagger 2 definition like the following

field:
    type: string
    enum: ["N", "L", null]
    nullable: true

the following code is generated

"field"?: (('N') | ('L') | ()) | null;

resulting in a syntax error: SyntaxError: '=>' expected.

This could be related to #447 and #234

openapi-typescript version: 3.0.1

[gr2m]

Could you create a pull request with a failing test, and we take it from there?

[FedeBev]

Hi @gr2m,

I didn't have much time to deep dive into the project, however I've created a PR (#492) with a failing test for both V2 and V3, hopefully in the right place 😃

The PR #492 should now fix the issue

[gr2m]

Thanks! Closed via #492 👏🏼