strip removes functions from objects

[ikovic]

If you use JSON.stringify and JSON.parse, any function references existing in source object will not remain in the output object. If that was the original intention, I'd suggest adding unit tests with a few cases which would document the correct behavior. If not, then I'd use Object.assign:

strip: function(object) {
  return Object.assign({}, object);
}

If IE support is needed, instead of that line of code I'd use the polyfill presented here.