Bug: Cannot destructure property `displayName` of 'undefined' or 'null'.

[blakedietz]

When typing a lot of tags out, I seem to be getting this error for the currently released project at v1.0.1.

Cannot destructure property `displayName` of 'undefined' or 'null'.

[blakedietz]

I was noticing that incorrect entries were being left in the tree from watching typing of tags in relatively large documents ~500 lines. I'm thinking that I'll just need to debounce on file change to reduce the chance of the wrong tags being put into the tree.

[blakedietz]

The source of this is caused by tags that have a . in them.

<!--@nested-tags:some.md-->

Breaks the plugin.

[qingbyin]

I found another case can also cause this problem:
using a real tab instead of spaces before the tag keword.
For example:

---
title: Hello nested tags
tags:
	- topic  # a real tab instead of spaces
	- here/is/a/nested/example   # a real tab instead of spaces
---

Debugging is non-trivial. It will be great if the extension can complain something it can not handle...