[typescript-fetch] result does not compile in typescript 4.7.3

Q&A (please complete the following information)

• OS: [Windows10]
• Browser: [Firefox]
• Version: [102.0.1]
• Method of installation: [npm]
• Swagger-Editor version: [4.3.0]
• Swagger/OpenAPI version: [OpenAPI 3.0.0]

• Visual Studio Code version[1.70.1]
• nodejs version[16.13.2]
• npm version[8.1.4]
• swagger-codegen [3.0.35]
• Typescript version [4.7.3]

Content & configuration

Example Swagger/OpenAPI definition:

openapi: 3.0.0
info:
  version: 2022.2.2
  title: a title
  description: a description
servers:
  - url: https://some_url.com
paths:
  /api/x/y:
    post:
      tags:
        - hallo
      description: hallo
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/a'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/a'
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/a'
components:
  schemas:
    a:
      type: object
      required:
        - parameters
      properties:
        parameters:
          type: array
          items:
            type: object
            required:
              - name
            properties:
              name:
                type: string
          minItems: 1

Describe the bug you're encountering

The code produced by typescript-fetch does not compile (Typescript check fails) with the following errors:
"Property 'configuration' has no initializer and is not definitely assigned in the constructor."
"Property 'name' has no initializer and is not definitely assigned in the constructor."
"The operand of a 'delete' operator must be optional."

To make it compile, I had to change the following:

In class BaseAPI :
protected configuration: Configuration; is replaced by
protected configuration?: Configuration;

in class RequiredError:
name: "RequiredError" is replaced by
name= "RequiredError"

in classes *ApiFetchParamCreator :
delete localVarUrlObj.search; is replaced by
localVarUrlObj.search=null;

To reproduce...

Steps to reproduce the behavior:

1. open node_modules/swagger-editor-dist/index.html
2. load the open api definition provided here
3. press Generate-Client/typescript-fetch
4. add the generated code to a nodejs project

Expected behavior

The generated code does not exhibit errors (typescript check does not fail)

Inspect the typescript-fetch templates behind BaseAPI, RequiredError, and *ApiFetchParamCreator; first reproduce generation with the supplied OpenAPI definition and TypeScript 4.7.3. Done means the generated client passes TypeScript checking without the reported initializer or delete-operator errors.