[BUG][TYPESCRIPT][AXIOS] Request parameter named "configuration" collides in typescript-axios generation

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• 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?
  • Actual output: Invalid API client code, generated with TypeScript errors because of colliding variable names and will not run
  • Expected output: Valid API client code
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

When an endpoint parameter has the name "configuration," this breaks the generated code for the typescript-axios generator because the name collides with the configuration object used in the base API.

Here are just a few other parameter names that would cause similar issues (this is not an exhaustive list, but these are the most common words).

• options
• index
• baseOptions
• basePath

Here's a full example repository, and a pull request just to show the typescript errors from the generated code:

• https://github.com/hiddenist/example-openapi-generation
• https://github.com/hiddenist/example-openapi-generation/pull/1

openapi-generator version

OpenAPI declaration file content or url

{
  "openapi": "3.0.1",
  "info": {
    "title": "Example API",
    "version": "v1"
  },
  "paths": {
    "/api/config": {
      "post": {
        "operationId": "UpdateConfig",
        "parameters": [
          {
            "name": "configuration",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Success"
          }
        }
      }
    }
  }
}

Generation Details

openapitools.json:

{
  "$schema": "./node_modules/@openapitools/openapi-generator-cli/config.schema.json",
  "spaces": 2,
  "generator-cli": {
    "version": "7.2.0",
    "generators": {
      "api": {
        "generatorName": "typescript-axios",
        "glob": "./openapi.json",
        "output": "./src"
      }
    }
  }
}

Steps to reproduce

1. Generate with the above openapi generator config and spec

See example repo/PR: https://github.com/hiddenist/example-openapi-generation/pull/1/files

Related issues/PRs

• https://github.com/OpenAPITools/openapi-generator/issues/17068

Suggest a fix

Ideally, the generated function parameter names should avoid colliding with a restricted list of tokens that are used in the generated code. That, or the generated code should be updated to namespace its variables with something to make it unlikely to collide.

I have a workaround that I've been using in my own codebase for a while where I grep out every instance of "configuration" in my json spec before generating, and replace it again within strings in the built out paths, but this isn't ideal. I can't change the API itself in this case since there are other consumers that need the API to stay the same.

Start with openapi.json and openapitools.json in the linked example repository, then generate the typescript-axios client using generator version 7.2.0. Inspect the generated code for collisions between endpoint parameters and the base API configuration variables; done means the example generates valid TypeScript without collisions while preserving the API parameter name.