JS - deep map function

Question

Underscore.js has a very useful map function.

_.map([1, 2, 3], function(num){ return num * 3; });
=> [3, 6, 9]
_.map({one: 1, two: 2, three: 3         


        

Answer 1

Here's a Lodash solution using transform

function deepMap(obj, iterator, context) {
    return _.transform(obj, function(result, val, key) {
        result[key] = _.isObject(val) /*&& !_.isDate(val)*/ ?
                            deepMap(val, iterator, context) :
                            iterator.call(context, val, key, obj);
    });
}

_.mixin({
   deepMap: deepMap
});