Question: Optional values

[MichaelHirn]

Hey @derbenoo, thanks for making this repo.

I was wondering if the following behavior is expected and if it can be changed.

Situation

@Configurable({ })
class Config extends BaseConfig<Config> {
  requiredValue: string
  optionalValue?: string
}

console.log(new Config({config: { requiredValue: 'abc' } }))
console.log(new Config({config: { requiredValue: 'abc', optionalValue: 'def' } }))

Expected Behavior

I expected console to print the following

Config { requiredValue: 'abc' }
Config { requiredValue: 'abc', optionalValue: 'def' }

Actual Behavior

But it actually prints this

Config { }
Config { }

I had to provide "dummy" default values in class Config { ... } to get the expected behavior, but it seems a bit strange that I have to change the class to this to get it to work as expected.

// this leads to the expected behavior
@Configurable({ })
class Config extends BaseConfig<Config> {
  requiredValue: string = ''
  optionalValue?: string = undefined
}

Can you advice if this is the desired behavior?