remove-unused-components doesn't remove recursive schemas

[joatkh]

Describe the bug

Using remove-unused-components decorator leave some schemas unused by operations but that are recursive.

To Reproduce
Steps to reproduce the behavior:

1. Given this redocly.yaml file

decorators:
  remove-unused-components:
    type: remove-unused-components
    
apis:
  test:
    root: test.json

2. And this OpenAPI file(s)

{
    "openapi": "3.1.0",
    "components": {
      "schemas": {
        "iwontbedrop": {
          "properties": {
            "Myprop": {
              "items": {
                "anyOf": [
                  {
                    "$ref": "#/components/schemas/iwontbedrop"
                  }
                ]
              },
              "type": "array"
            }
          },
          "type": "object"
        },
        "iwillbedrop": {
          "properties": {
            "name": {
              "title": "Name",
              "type": "string"
            }
          },
          "type": "object"
        }
     }
  }
}

3. Run this command redocly bundle

Expected behavior

The schema iwontbedrop being recursive is not drop even if not used outside of it's scope. So the expectation would be to have both iwontbedrop and iwillbedrop to be dropped

Logs

bundling .../test.json...
openapi: 3.1.0
components:
  schemas:
    iwontbedrop:
      properties:
        Myprop:
          items:
            anyOf:
              - $ref: '#/components/schemas/iwontbedrop'
          type: array
      type: object
📦 Created a bundle for .../test.json at stdout 13ms.
🧹 Removed 1 unused components.

OpenAPI description

Using version 3.1

Redocly Version(s)

1.25.8

Node.js Version(s)

22.4.0

OS, environment

MacOS Sonoma + Ubuntu

[tatomyr]

I confirm this is a bug. Thanks for reporting it!
Interesting enough, if you replace the current ref pointer with "#/components/schemas/iwillbedrop", both components will be removed.

[felipesanchezc88]

Thanks for reporting it, it took me a while to figure out what was happening. I will leave it like that and wait for the fix!