{@debug} displaying primitive values as undefined

[varholak-peter]

Minimal example

https://svelte.dev/repl/b2e23e4311244f6694ced9e116c249ca?version=3.3.0

Description

It seems that the {@debug ...} tag can't properly pull the primitive values into watcher's scope and as such, they end up being undefined, the same behavior is reflected in the console.log as part of debug where the variable is undefined as well.

However, standalone {console.log(...)} displays them correctly.

Screenshots

Environment

Chrome v74, Svelte v3.3.0

[Conduitry]

The destructuring and console.log statements are not respecting whether the variables in question have been hoisted. In this case, Svelte recognizes that let kobzol = 5; can be hoisted to the top-level scope, but this isn't reflected in the code generated for @debug.

[Rich-Harris]

I strongly approve of kobzol as a placeholder variable name