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It was possible to run arbitrary JS from inside angular expressions using the
`Object.getOwnPropertyDescriptor` method like this since commit 4ab16aaa:
''.sub.call.call(
({})["constructor"].getOwnPropertyDescriptor(''.sub.__proto__, "constructor").value,
null,
"alert(1)"
)()
Fix that by blocking access to `Object` because `Object` isn't accessible
without tricks anyway and it provides some other nasty functions.
BREAKING CHANGE:
This prevents the use of `Object` inside angular expressions.
If you need Object.keys, make it accessible in the scope.