Circular reference error in type definitions if subclasses appear before baseclass in schema.

[martitv]

We have the following schema components in our swagger.json file:

"Gjennomforing_4_3": {
        "type": "object",
        "allOf": [
          {
            "$ref": "#/components/schemas/Tvangsprotokoll"
          }
        ],
        "additionalProperties": false
      },
"Gjennomforing_4_4": {
        "type": "object",
        "allOf": [
          {
            "$ref": "#/components/schemas/Tvangsprotokoll"
          }
        ],
        "properties": {
          "administrertLegemiddel": {
            "type": "string",
            "nullable": true
          },
          "administrertDose": {
            "type": "string",
            "nullable": true
          },
          "administrasjonsform": {
            "type": "string",
            "nullable": true
          }
        },
        "additionalProperties": false
      },
"Gjennomforing_4_8": {
        "type": "object",
        "allOf": [
          {
            "$ref": "#/components/schemas/Tvangsprotokoll"
          }
        ],
        "properties": {
          "endringUnderGjForing": {
            "$ref": "#/components/schemas/VolvenKodeverkValue9272"
          },
          "beskrivelseAvGjForing": {
            "type": "string",
            "nullable": true
          },
          "endretTidspunkt": {
            "type": "string",
            "format": "date-time",
            "nullable": true
          }
        },
        "additionalProperties": false
      },
"Tvangsprotokoll": {
        "required": [
          "$type"
        ],
        "type": "object",
        "properties": {
          "$type": {
            "type": "string"
          },
          "id": {
            "type": "string",
            "format": "uuid"
          },
          "vedtakId": {
            "type": "string",
            "format": "uuid"
          },
          "pasientId": {
            "type": "string",
            "format": "uuid"
          },
          "fagligAnsvarlig": {
            "$ref": "#/components/schemas/Ansvarlig"
          },
          "startTidspunkt": {
            "type": "string",
            "format": "date-time",
            "nullable": true
          },
          "avsluttetTidspunkt": {
            "type": "string",
            "format": "date-time",
            "nullable": true
          },
          "merknad": {
            "type": "string",
            "nullable": true
          },
          "lopenummer": {
            "type": "integer",
            "format": "int32",
            "nullable": true
          }
        },
        "additionalProperties": false,
        "discriminator": {
          "propertyName": "$type",
          "mapping": {
            "Gjennomforing_4_3": "#/components/schemas/Gjennomforing_4_3",
            "Gjennomforing_4_4": "#/components/schemas/Gjennomforing_4_4",
            "Gjennomforing_4_8": "#/components/schemas/Gjennomforing_4_8"
          }
        }
      },

After running codegen on this schema the output is the following for the 3 subclasses (Gjennomforing_4_3, Gjennomforing_4_4, Gjennomforing_4_8) of Tvangsprotokoll:

Here the subclasses are extending Tvangsprotokoll instead of the BaseTvangsprotokoll class.

We believe this is a bug with the order they are parsed in. As the Base class come after the subclasses in the schema.components list. Everything worked fine when we renamed Tvangsprotokoll to Gjennomforing

[andymac4182]

Seems to be similar issue to https://github.com/acacode/swagger-typescript-api/issues/564