Hacker News Reader

This is supported at IDE level even in Vue 2 with Vetur (vscode), but has performance issues.

Really? I use Vue 2 with Vetur in VSCode and it does not type check templates.

You need "vetur.experimental.templateInterpolationService" set to true in settings.json, have a look here: https://vuejs.github.io/vetur/interpolation.html#generic-lan...