json.mapOf()?

[prabirshrestha]

Is there a equivalent for json.arrayOf but for observable maps instead of arrays?

[Roger]

I'm using this

  const jsonObservableMap = (mapData) => {
    // extends observable map, so json-mobx know how to serialize it
    const map = observable.map(mapData)
    Object.defineProperties(map, {
      json: {
        get: () => map.toJS(),
        set: data => map.replace(data)
      }
    })
    return map
  }

Like this

  class SomeClass {
    @json @observable attrs = jsonObservableMap()
  }

[danielearwicker]

That looks just about perfect to me.

[prabirshrestha]

@danielearwicker would love to have this in the json-mobx so npm install just work.

[danielearwicker]

I could look at this or accept PRs. I would need it to be typescript aware though. Also note that the built-in array support allows for:

json.arrayOf(MyClass)

where MyClass is the type of the array elements, so on deserialisation we can construct the right type of objects.

So it would be good to have:

json.mapOf(MyClass)

which would define a map of string-to-MyClass.