[BUG][TYPESCRIPT] Date issue with new openapi generator cli version

[FakeGamer31]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

Hello, in my workplace a collegue changed the local jar we have from version 7.12.0 to version 7.17.0 and first everything seemed fine. Then it was noticed that the dates are not correct any more. In the generated *Apis.ts files on the requestParameters the .toISOString().substring() part were missing. I had a look through some old Issues, PR's and changelog but couldn't find a reason why this is now happening. I also tested the versions before and until 7.16 its fine.

Version 7.17.0

        const queryParameters: any = {};

        if (requestParameters['dateFrom'] != null) {
            queryParameters['date_from'] = requestParameters['dateFrom'];
        }

        if (requestParameters['dateTo'] != null) {
            queryParameters['date_to'] = requestParameters['dateTo'];
        }

        if (requestParameters['startPosition'] != null) {
            queryParameters['start_position'] = requestParameters['startPosition'];
        }

        if (requestParameters['maxResults'] != null) {
            queryParameters['max_results'] = requestParameters['maxResults'];
        }

        const headerParameters: runtime.HTTPHeaders = {};

        if (requestParameters['accept'] != null) {
            headerParameters['Accept'] = String(requestParameters['accept']);
        }


        let urlPath = `/list/data`;

Version 7.16.0

        const queryParameters: any = {};

        if (requestParameters['dateFrom'] != null) {
            queryParameters['date_from'] = (requestParameters['dateFrom'] as any).toISOString();
        }

        if (requestParameters['dateTo'] != null) {
            queryParameters['date_to'] = (requestParameters['dateTo'] as any).toISOString().substring(0,10);
        }

        if (requestParameters['startPosition'] != null) {
            queryParameters['start_position'] = requestParameters['startPosition'];
        }

        if (requestParameters['maxResults'] != null) {
            queryParameters['max_results'] = requestParameters['maxResults'];
        }

        const headerParameters: runtime.HTTPHeaders = {};

        if (requestParameters['accept'] != null) {
            headerParameters['Accept'] = String(requestParameters['accept']);
        }


        let urlPath = `/list/data`;

openapi-generator version

now: openapi-generator-cli-7.17.0.jar
before: openapi-generator-cli-7.12.0.jar

OpenAPI declaration file content or url

This is a very shorten example from our codebase

openapi: 3.0.0
info:
  contact:
    name: Test
    url: test
  description: Test API for demonstrating generator issue
  title: Test API
  version: 1.0.0
servers:
  - description: Local server
    url: http://localhost:8080/
paths:
  /list/data:
    description: List data endpoint.
    get:
      operationId: get-data-items
      parameters:
        - description: Accept header
          in: header
          name: Accept
          required: true
          schema:
            type: string
        - description: Start date
          in: query
          name: date_from
          schema:
            format: date-time
            type: string
        - description: End date
          in: query
          name: date_to
          schema:
            format: date
            type: string
        - description: Start position
          in: query
          name: start_position
          required: true
          schema:
            format: int32
            type: integer
        - description: Max results
          in: query
          name: max_results
          required: true
          schema:
            format: int32
            type: integer
      responses:
        '200':
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/Item'
                type: array
          description: Array of items
      tags:
        - Items
    summary: Get Items
components:
  parameters:
    Accept:
      description: Accept header
      in: header
      name: Accept
      required: true
      schema:
        type: string
    ContentType:
      description: Content type header
      in: header
      name: Content-Type
      required: true
      schema:
        type: string
  schemas:
    Item:
      example:
        id: 1
        name: 'Sample Item'
        status: 'ACTIVE'
        createdDate: '2000-01-23T04:56:07.000+00:00'
      properties:
        id:
          format: int64
          type: integer
        name:
          type: string
        status:
          type: string
        createdDate:
          format: date-time
          type: string
      required:
        - id
        - name
      type: object

Generation Details

Nothing much to say. We run it via package.json script, that looks like this

"gen-api": "npx @openapitools/openapi-generator-cli generate -i src/api/openapi/test_openapi.yaml -g typescript-fetch -o src/api/openapi/bundle --skip-validate-spec --additional-properties=stringEnums=true",

and we have a openapitools.json

{
  "$schema": "node_modules/@openapitools/openapi-generator-cli/config.schema.json",
  "spaces": 2,
  "generator-cli": {
    "version": "openapi-generator-cli-7.17.0",
    "storageDir": "./src/api/openapi"
  }
}

Steps to reproduce

Run the command with version 7.17 and 7.12 and check the ItemsApi.ts

Related issues/PRs

Suggest a fix