Properties of e:

e.number: -2146823279
e.stack: ReferenceError: 'BadType' is not defined
   at throwException (PropertyValidation.js:65:9)
   at bar (PropertyValidation.js:85:5)
   at foo (PropertyValidation.js:90:5)
   at Global code (PropertyValidation.js:93:1)


Deleting e.stack ...

e.stack after delete:
undefined
Properties of e:

e.number: -2146823279
e.stack: ReferenceError: 'BadType' is not defined
   at throwException (PropertyValidation.js:74:9)
   at bar (PropertyValidation.js:85:5)
   at foo (PropertyValidation.js:90:5)
   at Global code (PropertyValidation.js:93:1)


Updating e.stack ...

e.stack after update:
foo

Object.preventExtensions test:
true
true
true
true