[JAVASCRIPT]- Bug with js client code generation: Allof and Enum Inheritance

Description

• when i try to generate a javascript client from a YAML that has this schemas format

1. an enum schema
2. a schema that uses allof and ref for that enum
   the js client generated has a class that tries to extend an enum (that is represented as a const var in the generated client). and then when i try to use the client it fails with an error
   bootstrap:27 Uncaught TypeError: Class extends value #<Object> is not a constructor or null at ./javascript-client-generated/src/model/AllOfPossibleIssueMode.js (AllOfPossibleIssueMode.js:24:1) at options.factory (react refresh:6:1) at __webpack_require__ (bootstrap:24:1) at fn (hot module replacement:62:1) at ./javascript-client-generated/src/index.js (UserApi.js:367:1) at options.factory (react refresh:6:1) at __webpack_require__ (bootstrap:24:1) at fn (hot module replacement:62:1) at ./src/App.js (logo.svg:30:1) at options.factory (react refresh:6:1)

Swagger-codegen version

using the online client generator (from swagger editor)

Swagger declaration file content or url

• easy to recreate with the pet store example and adding the following schemas (even without referencing them)

components:
  schemas:
    PossibleIssueEnum:
      title: "PossibleIssueEnum"
      enum:
      - "issue1"
      - "issue2"
      description: "An enumeration."
      
    PossibleIssue:
      title: "PossibleIssue"
      required:
      - "mode"
      type: "object"
      properties:
        mode:
          type: "string"
          allOf:
          - $ref: "#/components/schemas/PossibleIssueEnum"
          description: "possible issues.\
            \ Possible options: “issue1” / “issue2”"

Steps to reproduce

• add the following schemas to the pet store example
• generate a js client
• try to use any endpoint

Related issues/PRs

• could only find a similar JAVA issue

Start by reproducing the issue with the pet store example plus the provided PossibleIssueEnum and PossibleIssue schemas, using the JavaScript client generator. Inspect the generated AllOfPossibleIssueMode.js and related generated model output; done means the client loads and can call an endpoint without the Class extends value error.