Use Lo-Dash merge without modifying underlying object

Question

How can I use lodash _.merge(obj, source) without obj being modified? I just want a return of the value that merge computes,but I want to keep my original object intact.

I assume this question applies to most lodash functions, but I haven't found a solution so far.

Answer 1

Simply provide an empty object as the target (merge supports more than one source value):

var result = _.merge({}, obj, source);