Lazy Clone using Proxy

README.txt

Just created! Very limitted usage.

TODO: 
 - `enumerate`
 - `ownKeys`
 - `has`

lazyclone.js

function isObject(obj) {
  var type = typeof obj;
  return type === 'object' && !!obj;
}

function lazyClone(source) {
  function seltBelt(source) {
    var clone = {};

    return new Proxy(source, {
      get: function (target, prop) {
        if (prop === '__isProxy') return true;

        if (clone[prop]) return clone[prop];

        var accessedProperty = target[prop];

        if (isObject(accessedProperty) && !accessedProperty.__isProxy) {
          return seltBelt(accessedProperty);
        } else {
          return accessedProperty
        }
      },
      set: function (target, prop, value) {
        return clone[prop] = value;
      },
    });
  }
  
  return seltBelt(source);
}

// Usage
var FOC = {f:1,o:1,c:1};
var abitComplexObject = [{x: [1,2],y: FOC}, false, [1,2, {n: 1}]]
var CLONE = lazyClone(abitComplexObject);


CLONE[0].y.f = 20
console.log(FOC.f !== CLONE[0].y.f) // true