GitHub - aearly/icepick: Utilities for treating frozen JavaScript objects as persistent immutable collectionsObject.freeze() is a quick and easy way to get immutable collections in plain JavaScript. If you recursively freeze an object hierarchy, you have a nice structure you can pass around without fear of mutation. The problem is that if you want to modify properties inside this hierarchical collection, you have to return a new copy with the properties changed. A quick and dirty way to do this is to jus
