Grab all the data nodes of an Object

flatten.js

var assign = require('object-assign');

// Get all the data nodes of an object
function flatten(obj) {
    return Object.keys(obj).reduce(function (prev, key) {

        return isObject(obj[key])
            ? assign(prev, flatten(obj[key]))
            : (prev[key] = obj[key], prev);

    }, {});
}

function isObject(obj) {
  return Object.prototype.toString.call(obj) == '[object Object]';
}

var flat3 = flatten({ val1: 1, level2: { val2: 2 } });
var flat4 = flatten({
    val1: 1,
    level2: {
        val2: 2
    },
    level3: {
        nested: {
            val3: 3
        }
    },
    level4: {
        nested: {
            nested: {
                val4: 4
            }
        }
    }
});

console.log(flat3); //=> { val1: 1, val2: 2 }
console.log(flat4); //=> { val1: 1, val2: 2, val3: 3, val4: 4 }