dxcfg VS eps

I think parsing YAML or JSON into typed structures is the easier way to go. I e.g. do that in Golang using a little form validation and coercion library I've written. The end result is a nested, strongly typed data structure. Here's an example: https://github.com/iris-connect/eps/blob/master/settings.go (the accompanying form validation configuration: https://github.com/iris-connect/eps/blob/master/forms/settin...)

In my experience, a lot of the validation needs to be done at runtime anyway as type checking alone won't allow you to e.g. validate if a string is a valid regular expression. Also, I think using TypeScript for configuration requires you to compile & interpret the configuration file in order to check it and obtain the data values. Not sure if I like that as it requires bundling the Typescript compiler with your program.