using yaml as standalone template

[btrem]

My editor of choice (VS Code) has good support for yaml, including validation via json schema. But it only works on yaml files, not on yaml front matter in a markdown file. I'm developing a quasi recipe website, and I can represent most of my recipes in the front matter with no markdown needed.

Can I then replace a recipe in foo.md with foo.yaml and have 11ty turn it into an html page using a nunjucks layout? I read discussion #1895 but didn't quite follow. One reply suggested that there would be some redundancy. Why would that be the case?

I tried to add a custom format to my config file eleventyConfig.addTemplateFormats("yaml"). Nothing happens with just that directive. If I also add eleventyConfig.addExtension("yaml") I get a TS error: "link.slice is not a function". Web searches for that error say .slice can only be used on a string or array. Makes sense, but I don't know how to fix it on my end.

[btrem]

The TS error was a red herring. Problem was trying to .slice an empty variable.