Iterate through object properties and output their types

Get object properties used

var keys = {};
lo.forEach(OBJECT, (item) => {
  lo.forEach(item, (value, key) => {
    if (!keys[key]) {
      keys[key] = {};
    }
    var type = typeof value;
    // differentiate Array from Object
    type = (type == "object") ? (value instanceof Array ? "array" : "object") : type;
    // capitalize
    type = type[0].toUpperCase() + type.slice(1);
    keys[key][type] = true;
  });
});
lo.forEach(keys, (bool, key) => {
  keys[key] = Object.keys(bool).join(' | ');
  console.log(key + ': ' + keys[key]);
});