JS: Array-like data structure to array

index.js

function obj2arr(obj) {
  var arr = []
  function flatten (subobj, isRoot) {
    var result = {}

    Object.keys(subobj).forEach(key => {
      if (typeof subobj[key] === 'object') {
        flatten(subobj[key], false)
      } else {
        result[key] = subobj[key]
      }
    })

    if (!isRoot) {
      arr.push(result)
    }
  }
  flatten(obj, true)
  return arr
}

obj2arr(
  {
    justin: {
      lastname: "lazaro",
      age: 10
    },
    eon: {
      lastname: "musk",
      age: 20,
      jeffy: {
        lastname: "musdsadask",
        age: 19
      }
    }
  }
)