yaml: imported fields treated as type none

[triodan]

• Component:
  • VSCode Extension
• Extension version: v0.13.0
• LSP version:
• OS version and name: Windows 11

• I am on the latest stable version of the extension/LSP.
• I have searched the issues of this repo and believe that this is not a duplicate.

Issue

When a YAML file is imported and passed to a method, the receiving method treats the passed data as type none.

main.typ:

#let print_name(content) = [
  #for item in content [
    #item.name
  ]
]

#print_name(
  yaml("data.yaml")
)

data.yaml:

- name: Alice
- name: Bob

VSCode will report this error despite compilation preview being successful:

[triodan]

I figured out that this is caused due to lack of null-checking for the passed-in variables. Adding checks like this in the function resolves the issue:

#if content != none {
 ...
}

However I think the current message is not intuitive, maybe it can be replaced with something like 'content' may be of type none?