Hashing does not work with ES5 classes that use getters that refer to internal class instances

[Charles-Can]

When calling a hash on a class instance that has a getter the calls another a method on another internal class there is an error. confused yet?

See example here: https://stackblitz.com/edit/typescript-yqkcuo

Expected

hash(es5InstanceWithGetter) returns a hash

Actual

cannot call [some property] on undefined