[Question]: loading scripts/css to the canvas depending on traits

When you use canvas: { scripts: [], styles: [] } it appends only those files to the canvas of the editor, so you won't see them in your final code (editor.getHtml()). There is no kind of global list but you still can tell the component to avoid including your script

const myScript = function() {
	const el = this;
	// ...
}

editor.Components.addType('...', {
	model: {
		init() {
			this.on('change:my-trait-prop', this.onTraitPropChange);
			this.onTraitPropChange(); // do the check on init
		},

		onTraitPropChange() {
			const prop = this.get('my-trait-prop');
			
			prop ? this.set({ script: myScript }) : this.set({ script: '' });
		}
	}
})