I have this idea that I could use node.js and standalone interchangeably by converting back and forth between forms.
To convert a standalone TW I used the --savewikifolder command. I was surprised/worried how slow the resulting node.js version worked.
When I saved back to the standalone, I was even more surprised that my wiki file size had increased 10 fold!
So, it turns out that when you use --savewikifolder, it automatically imports as embeded tiddlers everything in your external files directory. It does not do any mapping to your existing _canonical_uri tiddlers.
I guess my main comment is that this is not documented, and somewhat unexpected. To make it useful, you would have to spend a great deal of time remapping your existing links to the new tiddlers. But if you’re converting back and forth, this would not be practical.
Now that I know it is happening, I can just delete the tiddlers to prevent bloating. It seems like it would be better if there was a switch to turn off this behaviour, but maybe not enough of us use this command to matter.