What is safe method to perform `Object.assign` when using AngularJS?

Question

Basically I would like to perform Object.assign to get copy of my data, without anything that AngularJS attached in the past, it attaches now, or may attach in future versions.

Sure I can delete such property as $$hashKey after assignment but this approach is totally fragile, on the other hand I could manually construct the object with fields I want but this on the other hand is tiresome (and also fragile if I change definition of my source object).

Is there something solid in between?

Answer 1

There are no other properties as $$hashKey, it is one of a kind.

All of Angular object helpers are aware of this property and remove it at the end of the operation. angular.extend is a direct Angular counterpart of Object.assign and should be used instead.