Validate/Type check Json Structure

Currently, if a field in the Json is missing or wrongly typed, the resulting error is just a mess.

Research

There are a few possible solutions to this problem:

Using JSON Schema 👍 JSON is well known ❌ Syntax is overly complicated ❌ assumes that all fields are optional - This misses the point a bit.
Using a type checking libary for JS called typy 👍 Everyone knows how to write JS, so writing your own validator would not be hard. ❌ Could be used to inject unwanted code
Using the configuration language jsonnet instead of JSON. ❌ Can't actually validate, but provide default values. This can indirectly solve the problem. 👍 Extendable to also include preprocessing ❌ jsonnet is not very well known
Using the configuration language CUE 👍 simple to write validator 👍 Can be extended to a preprocessor ❌ No native Node.js (would need async calls to access it) ❌ No VS Code support
Using Joi Schemas to validate the json 👍 simple to write validator 👍 syntax is basic ❌ outdated. Seems like a hobby project