[Bug report] Page.title is not type guarded

[Mister-Hope]

Description

---
title: 1
---

---
title: {}

There will be noob users who set titles like this, and page.title (with string type) will have other types, and this may break the application.

Unless we set page.title: unknown , we should guard the types of it.

Reproduction

Not needed

Used Package Manager

npm

System Info

.

[meteorlxy]

It's too verbose to use Record<string, unknown> for all frontmatter properties. We'd better assume that user use it correctly.

BTW, does title: 1 result in number or string?

[Mister-Hope]

number, so that's why I want this. No trim, replace or other functions are on numbers, so an errror will be thrown while it bypass typescript checks.

I agree it's fine for us not to check other properties, but title is an important one, and it's extracted just into page object (so you realize this is important)

I alrady met 10+ reports about setting title to a non-syring value by mistake and got error