Binding doc frontmatter in component frontmatter

[ManUtopiK]

Version

module: 3.0.2
nuxt: last

Reproduction

Link:

• Stackblitz
• GitHub reproduction

What is expected?

I want to bind value of the frontmatter doc in the frontmatter component.

---
title: The title
---

::alert
---
type:
  - :nested: title
:type2: title
---
slot
::

What is actually happening?

First, it works only for root keys, not for nested keys. You can see the result on the repro.
The value of the key :type2 is well replaced by The title, but not the :nested value.

Second, there are 2 problems when we compile the AST to markdown :

1. The binded root key :type2 is replaced by type2.
2. The binded nested key :nested is single quoted to ':nested'. Starting a key with : is valid in Yaml, it should not be quoted.

For the first problem, it seems it comes from this line, but if I comment this line, :type2 become single quoted.

Steps to reproduce

Launch vitest on my fork.

Additional information

Checklist

• I have tested with the latest Nuxt version and the issue still occurs
• I have tested with the latest module version and the issue still occurs
• I have searched the issue tracker and this issue hasn't been reported yet

Steps to reproduce

What is expected?

1. Permit binding nested value.
2. Keep : of root bind value.
3. Don't use single quote as it's valid with Yaml.

What is actually happening?

[Atinux]

Sorry about this @ManUtopiK

Would you feel like trying to open a PR to fix that?

[ManUtopiK]

The quote problem seems coming from js-yaml. I opened an issue for this.
For the nested key, I'll take a look when I have some free time...