[seer]

I wonder if it has an intermediary step that concerts the template to AST?

I like my tools to have as much types generated from context as possible (types from OpenApi, from graphql or from sql queries) and was looking to build a tool like that for handlebars. Idea being that it would tell you which types the template variables used so you could avoid stupid errors at compile time.

It seamed handlebars could provide an AST, but it was kinda hard to used so I scrapped the effort.

Maybe this would be more condusive?

[emilos]

Having a type system wasn't really the goal here (there's enough great tools that handle that), but there's plenty of options that could work for you, if you're willing to build it. Some quick ideas:

1. You could add a jsdoc comment per component, let your tool read it and treat it as the source of truth 2. The template is just a js file, so you could parse it, get the params of the fn and try to deduce the types based on the usage 3. You could use typescript and export types 4. Serialize/normalize data before passing to the templating engine