Internal directories/per-route lib folders?

[mavdotj]

I was thinking of a special folder type called Internal Directories which are basically lib folders that can only be accessed by the route and children of the route its in.
This basically explains everything and you may make a comment to ask any questions you have.

src/routes/
    thing1/
        -lib/
            importantlib.ts
       +page.svelte
       +page.server.ts (imports importantlib ✅)
    thing2/
        +page.svelte
        +page.server.ts (attempts to import importantlib, but errors 🚫)
    blog/
        -lib/
            BlogComponent.svelte (cannot import anything outside of this folder or the parent -lib folder)
        [slug]/
            +page.svelte (imports BlogComponent ✅)
            +page.server.ts (imports auth ✅)
    -lib/
        auth.ts (cannot import anything outside of this folder)
       +page.svelte (not actually a page, but a component)
    [x+2d]lib/
        +page.svelte (page that shows up at /-lib)
    +page.svelte (imports ./-lib/auth.ts ✅)