How do I display type previews in VSCode with PageServerData?

[theetrain]

Given this snippet

/** @type {import('./$types').PageServerData} */
export let data

When I hold CMD + hover with my cursor, I see my type interface for data, but I would like to see the full type interface for data.branch in the preview window (if it's possible).

My Branch type shows up, but I want to see the whole interface for Branch.

But in +page.svelte, when I hover data.branches I see this:

(property): branches: Branch