Dates should merge

[will123195]

For example:

$ node
> require('deepmerge')({a:new Date()}, {a:new Date()})
{ a: {} }

Expected behavior:

$ node
> require('deepmerge')({a:new Date()}, {a:new Date()})
{ a: Mon Apr 11 2016 19:25:29 GMT-0400 (EDT) }

[neopostmodern]

You can fix this by changing these lines to:

            if (Object.prototype.toString.call(src[key]).includes("Date")) {
                dst[key] = src[key];
            } else if (typeof src[key] !== 'object' || !src[key]) {
                dst[key] = src[key];
            }
            else {
                if (!target[key]) {
                    dst[key] = src[key];
                } else {
                    dst[key] = deepmerge(target[key], src[key]);
                }
            }

(I don't bother to write a PR because the package seems pretty abandoned.)

EDIT: If you don't need deepmerge specifically you should of course simply _.merge!

[KyleAMathews]

@neopostmodern this package isn't abandoned, it's waiting for someone like you to maintain it! ;-) Just sign up at #25 and I'll make you a collaborator + give you the release bit for NPM.