> really curious how importing works and all.
So was I, so this is what I determined, on top of the official docs.[1]
On deno run of a script, it will download referenced imports and put them into a cache directory with a hash of the name. On a UNIX-like, this seems to be in ~/.cache/deno/deps (there's also a ~/.cache/deno/gen for the TS to JS stuff). Subsequent runs do not seem to download the scripts, but instead use the cached hashed versions. There's probably a way to blow out or overwrite the cache with newer download with a deno command, but I'm not sure what it is.
Compiling bundled the cached dependencies, so they aren't downloaded on run. Importing from local files is also possible, as noted in the docs I linked.
I'm happy to be corrected to supplemented on any of that info, I would rather know the actual way it works than persist in a slightly wrong assumption. :)
1: https://deno.land/manual@v1.11.5/examples/import_export
