Modify generated enum keys

[dlohvinov]

Hi!

Is there a way to somehow modify generated enum keys except doing it in openapi schema?

I want to convert enum keys from snake_case to camelCase. Original enum values are snake_case, so I need to convert only keys.

I have an openapi v3 schema, it looks like this:

#...
components:
    schemas:
        someSchemaName:
              enum:
                  - enable_2fa
                  - export_settings
              // #...
#...

And generated enum looks like this:

export const someSchemaName = {
	enable_2fa: 'enable_2fa',
	export_settings: 'export_settings', // but i want exportSettings: 'export_settings'
} as const;

I see that I can set enum names manually orval docs in openapi file, but openapi file is generated too, so editing it is not an option.

It looks like getEnumNames doesn't support any enum keys modification configs, but maybe there is a workaround for this?.. 🤔

Btw I'm struggling to configure a flow to convert snake_case'd openapi source file to camelCase'd generated files, and it feels like pain. I use openapi-format as a workaround to change casings, but it still feels so complicated to work with it.
Maybe there are some easier ways to convert casings in orval?...

[melloware]

@AllieJonsson i don't think this is currently supported. Enum's to me should map exactly as they are in OpenAPI.

[dlohvinov]

I'll agree with @MattFromGer here: it is really complicates things to make this solution universal :(

Btw, in order to convert generated types properties (+zod, +msw) to camelCase I use 2 separate libs before orval: api-spec-converter (swagger v2 to openapi v3) -> openapi-format (convert to camelCase) -> orval. That is very complicated and overheading.

It would be really great if it would be just 1 config option.

[melloware]

PR is welcome!

[dlohvinov]

@melloware , not sure but maybe I'll be able do it :)
how do you think, how complex should the solution be?

Could it be a config property like:

output: {
    overrides: {
      namingConvention: { // or string, like 'camelCase', 'snake_case', etc.
        enum: 'pascalCase', // or others, using available options from https://www.npmjs.com/package/change-case
        // todo: might be extended for "properties", "parameters", ...
      },
    },
  },

And localized implementation of something similar to code snippet above by @MattFromGer , in core/getters/enum.ts file?

Or, should it be more complex solution?

[melloware]

i feel like Keep It Simple Stupid until you need something more complex is my motto...

[dlohvinov]

@melloware ok, thank you!
I'll try to implement it and make a PR, when will be able :)

[MattFromGer]

I would like to have this config option as well!
I'm considering migrating from openapi-generator to orval and would need to change all enums since openapi-generator has the config option enumPropertyNaming and the default even is PascalCase

[melloware]

@MattFromGer see @AllieJonsson answer you can do it now.

[MattFromGer]

@melloware see my other message. I would still plead for a config option

[melloware]

@MattFromGer @dlohvinov a PR is welcome!