How to deeply map object keys with JavaScript (lodash)?

Question

https://lodash.com/docs#mapKeys

Is it possible to map an Object\'s keys deeply using Lodash? If not, is there another library providing this functionality (if grouped wi

Answer 1

I've add a small improvement from Chris Jones's answer.

Following code fix some unintended results of Array elements.

_.mixin({
  deeply: function (map) {
    var deeplyArray = function (obj, fn) {
      return obj.map(function(x) {
        return _.isPlainObject(x) ? _.deeply(map)(x, fn) : x;
      })
    }

    return function (obj, fn) {
      if (_.isArray(obj)) {
        return deeplyArray(obj, fn);
      }

      return map(_.mapValues(obj, function (v) {
        return _.isPlainObject(v) ? _.deeply(map)(v, fn) : _.isArray(v) ? 
          deeplyArray(v, fn) : v;
      }), fn);
    }
  },
});