When to switch themes/plugins to `.gjs`?

[RGJ (Richard - Communiteq)]

@pfaffman

They wanted to add a couple of other kinds of blocks

But…

@Discourse

You can also use other Ember components as blocks, you just need to use the correct name. For example, core includes a signup-cta Ember component, and you can use it in the sidebar as is. Note that you can’t use components that expect a set of parameters, but you can build your own Ember component in a separate theme and reference it just by its name in the sidebar’s blocks setting.