angular.copy from AngularJS 1.x is quadratic-slow on large objects, especially in IE.
JSON.parse for simple objects or
_.deepClone for objects with
Date objects or cyclic references. Actually, if you don’t clone objects of more than 1000 nodes, this shouldn’t bother you.
How I bumped into it
The other day I faced with a need to deeply clone an object from the redux store and since we’re using angular I initially thought about angular.copy, but then I…