A Stage acts as a convenience tool to hoist a canvas and begin drawing however it's not fundamental.

The Stage helps manage loading and looping of draw functions Extend with your own custom functionality and run the go() method:

class MainStage extends Stage {
    // canvas = document.getElementById('playspace');
    canvas = 'playspace'
}

stage = MainStage.go({
    loop: true
})

This will execute the canvas name. It provides some free tools:

1. mount() and draw(ctx) functions
2. load capture events
3. size locking and auto resizing
4. optional request frame loop
5. builtin measurement tools; center and dimensions