Just idly thinking that if one re-structured a tiddlywiki document with a separate JavaScript file (as in
index.html including tiddlywiki.js), then it might be possible for the tiddlywiki.js file to contain logic such that one could start the TiddlyWiki as a node.js web server with:node tiddlywiki.js...and then have the JavaScript sniff for the TiddlyWiki HTML document in the same directory to get at the data.