Vyacheslav Egorov recently showed his useful helper tool that converts handwritten ASCII-based diagrams into images - he wrote it in Dart, adding around 450 kbytes overhead to the code that could perfectly fit in 18 kbytes of heavily commented non-minimized javascript code (or ~8 kbytes of minified code).
I thought this was a huge waste of resources and rewrote the tool to pure js, I just didn't see any reason for Dart here.
To use this in console, run
node shaky-node.js textfile imagefile.png
Please note that while this pull request is not merged, there's no way to make node-canvas use custom font, so please install the ttf font locally.
And please use the shaky.html file as a sample of in-browser use.