Relative paths in $ref to external files are not resolved correctly

[kazukinagata]

Description

When referencing split files with the same name located in different directories using relative paths, the issue arises at this line, where URLs are treated as duplicates. As a result, the correct type definitions are not generated.

Do you have plans to fix this issue? If not, I would be happy to submit a PR includes the necessary fixes and tests.

Thank you for this amazing library!

samples/nested-relative-refs/
├── index.yaml
├── models
│   ├── metadata.yaml
│   └── user.yaml
└── requests
    ├── metadata.yaml
    └── user.yaml

# samples/nested/relative-refs/models/user.yaml
title: User
description: User model
type: object
xml:
  name: User
properties:
  name:
    type: string
  metadata:
    $ref: './metadata.yaml'
required:
  - name
  - metadata

# samples/nested/relative-refs/requests/user.yaml
title: UserRequest
description: User request
type: object
xml:
  name: UserRequest
properties:
  name:
    type: string
  metadata:
    $ref: './metadata.yaml'

Environment

• Package version: v0.24.0
• OS:
  • Linux
  • Windows
  • macOS
• Node.js version: 18.20.4
• npm version: 10.7.0

Additional context

[kazukinagata]

Should we just move on?