Wrong header start position?

[harupy]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and discussions and couldn’t find anything (or linked relevant results below)

Affected package

eslint-plugin-unused-imports

Steps to reproduce

I'm not sure if this is a bug. Related to sweepline/eslint-plugin-unused-imports#115.

import React from 'react';

# Hello World

1. Create a file example.mdx with an unused import followed by a markdown heading
2. Configure ESLint with eslint-plugin-mdx and eslint-plugin-unused-imports
3. Run eslint example.mdx --fix
4. The # character is removed

Actual behavior

The # character is removed

Expected behavior

The # character is not removed

Runtime

No response

Package manager

No response

Operating system

No response

Build and bundle tools

No response

[harupy]

After some investigation, I found a JsxTest the parser generates has a start value pointing H (in Hello), not #. Is this intentional? This leads to eslint-plugin-unused-imports stripping # when the header follows an unused imports (e.g., import React from 'react'; in the example).