Unable to find factory method for Kiota.Builder.CodeDOM.CodeUnionType for `oneOf` and `allOf` schema

[zoeyzuo-se]

Hi I'm using VSCode extension to generate Typescript SDK from an OpenAPI Spec file but having the following error. I believe it's related to the schema contains allOf or oneOf in it. I tried different scenarios that when the schema hierarchy doesn't contain one of them then the generator works fine without any error.

Error message

OpenAPI Spec file

openapi: 3.0.0
info:
  title: Mock API
  version: '1.0.0'
  description: Mock API to reproduce issue with kiota generator
paths:
  /mystuff:
    get:
      operationId: mystuff_get
      responses:
        '200':
          description: The request has succeeded.
          headers:
            schema:
              required: true
              schema:
                type: string
          content:
            application/json:
              schema:
                type: object
                properties:
                  results:
                    $ref: '#/components/schemas/ParentSchema'
                required:
                  - results
                x-typespec-name: (anonymous model)

components:
  schemas:
    ParentSchema:
      type: object
      properties:
        name:
          type: string
        firstChild:
          allOf:
            - $ref: '#/components/schemas/NormalChild'
        secondChild:
          $ref: '#/components/schemas/ChildCOntainsOneOf'
      required:
        - name
        - firstChild
        - secondChild
    NormalChild:
      type: object
      properties:
        key:
          type: string
      required:
        - key
    ChildCOntainsOneOf:
      discriminator:
        propertyName: schemaType
      oneOf:
        - $ref: '#/components/schemas/RandomSchema_1'
        - $ref: '#/components/schemas/RandomSchema_2'
    RandomSchema_1:
      type: object
      properties:
        schemaType:
          type: string
          enum:
            - absolute
        key:
          type: integer
      required:
        - key
    RandomSchema_2:
      type: object
      properties:
        schemaType:
          type: string
          enum:
            - relative
        key:
          type: integer
        index:
          type: integer
      required:
        - index
        - key
servers:
  - url: https://example.com
    description: Single server endpoint
    variables: {}

Steps to reproduce:

1. In VSCode extension, run > Kiota OpenAPI Explorer and choose this file
2. Put in the parameters required
3. An error will show up in the bottom right corner

• Also can be reproduced by running Kiota CLI: kiota generate -l typescript -d gh-issue.yml -c Client -o ./client

Note

The error doesn't show up when generating the SDK in Python.

Any help would be appreciated. :)

[baywet]

Hey @zoeyzuo-se, This is expected, composed types serialization hasn't been implemented yet in TypeScript. But this is being worked on right now #1812 and the hope is that it'll be available with the next minor version of kiota. Closing as duplicated.

[zoeyzuo-se]

Hi @baywet

Thanks for the reply. May I ask is there an ETA for the next minor version?

[baywet]

Early September