Uncouple from node-canvas.

node-canvas requires node gyp and its a nightmare to use with things like electron or docker. Is there a way to fully uncouple from canvas and instead have an abstraction where the user can decide?

For example, svg is a good start but if I install Trianglify I am forced to download node-canvas even if I dont want it.

Maybe some possible alternatives:

• http://joshmarinacci.github.io/node-pureimage/
• http://camanjs.com/