Ramda lens helper

lens-helper.js

const blankLens = R.lens(
  (x) => x,
  (x) => x
);

const handler = {
   get: function(target, name, reciever){
     const nameAsInt = parseInt(name)
     if(!isNaN(nameAsInt)){
       return createLensObject(R.compose(target, R.lensIndex(nameAsInt)))
     }else{
	   return createLensObject(R.compose(target, R.lensProp(name)))
     }
   }
}

function createLensObject(lens = blankLens){
  return new Proxy(lens, handler)
}

const L = createLensObject(blankLens)

// Access properties and indices on L to create a lens
// L.x = R.lensProp("x")
// L[0] = R.lensIndex(0)

view(L.x, {x: 7}) // = 7
over(L[0].q, x => x + 3, [{q: 4}]) // [{"q": 7}]
set(L.z.q, 5, {z: {q: 3}}) // {"z": {"q": 5}}