Box demo
Proxy-backed. Inner properties forward through the box.
primitive box
message: hello
object box (transparent forwarding)
name: Ada | age: 36
array box
list: 1, 2, 3 (len: 3)
function box (callable)
hi, world
boxedMap (SvelteMap)
scores size: 2
ada: 100
ben: 80
boxedSet (SvelteSet)
tags: svelte, reactive (size: 2)
type guards
count is number: true
user is object: true
list is array: true
greet is function: true
scores is map: true