Null types are not handled

[rveciana]

I'm using FastAPI 100, that creates OpenAPI version 3.1 as an output.

I want an object with arrays with elements of a type or null, such as:

data: dict[str, list[float|None] | list[int|None]]

Before, the None was ignored when generating the OpenAPI file, but now, the generated file looks like:

"additionalProperties": 
              "anyOf": [
                {
                  "items": {
                    "anyOf": [{ "type": "number" }, { "type": "null" }]
                  },
                  "type": "array"
                },
                {
                  "items": {
                    "anyOf": [{ "type": "integer" }, { "type": "null" }]
                  },
                  "type": "array"
                }]}

Then, openapi-typescript-gen creates wrong types like this:

data: Record<string,> 

instead of:

    data: Record<string, (Array<number|null> | Array<string|null>)>;

Looking at the code, I can't see the place where openapi-typescript-gen processes the type null.