Feature Request: Make node skipping configurable in Table of Contents

[AndrewIngram]

Description

In the table of contents extension, anchor nodes are skipped if they don't have any text content:

https://github.com/ueberdosis/tiptap/blob/develop/packages/extension-table-of-contents/src/plugin.ts#L25-L27

if (!anchorTypes.includes(node.type.name) || node.textContent.length === 0) {
  return
}

For the one of the node types I'm using, the label isn't part of the textContent, but rather stored in an additional attribute -- but this means that until I add some actual content, the node is missing from the outline -- even if it has an appropriate label.

If it were possible to pass in a callback that's used instead of the textContent check (it'd default to the same logic), i'd be able to work around this limitation.

Use Case

I have custom node times that I want to appear in the outline regardless of whether they have any content or not.

Type

New feature