The main difference between the bundler using a framework like Svelte or React and those who doesn't is how and where the data is used. In the svg bundler the data is used in onRender, which is executed when new data is available. In the svelte bundler the data is used inside the svelte files (onInit) and updates when the panelupdate event is triggered (panelupdate triggers when new data is available).
Unsure how to use a template? Check out How to use a template.
Bundlers using a framework
Remember to turn Dynamic data object to true when using the bundlers below