Unquoted numeric enum values generate numeric enums though the schema type is string

[hon2a]

openapi-typescript version

7.10.1

Node.js version

24.11.0

OS + version

macOS 26.2 (25C56)

Description

When a schema is defined as

SomeSchema:
  type: string
  enum: [ 1 ]

and "true enum" generation is turned on, it produces the following:

export enum SomeSchema {
  Value1 = 1
}

i.e. the value is numeric, though it's defined as string in the schema. Server then returns (valid) string values and numeric equality checks on the client (matching the API type) fail.

Reproduction

Already clearly defined in description.

Expected result

Already clearly defined in description.

Required

• My OpenAPI schema is valid and passes the Redocly validator (npx @redocly/cli@latest lint)

Extra

• I’m willing to open a PR (see CONTRIBUTING.md)

[hon2a]

Actually, the schema does not pass Redocly validator. Apparently, we had a misconfigured pipeline.

[duncanbeevers]

We super-appreciate your checking the document against the validator, and leaving this info for others who may encounter this issue in the future!
Thanks for being transparent and sharing your experiences in the open like this. It makes the open source ecosystem better for everyone.