About ReferenceErrors: In 1v99 you could write foo,12 where foo was undefined - and nothing would happen. Now you get a ReferenceError. It won't be stopping anything from working, it just helps to find bugs earlier. typeof still works as you'd expect.
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I'm not sure I understand what you mean?
About ReferenceErrors: In 1v99 you could write
foo,12
where foo was undefined - and nothing would happen. Now you get a ReferenceError. It won't be stopping anything from working, it just helps to find bugs earlier.typeof
still works as you'd expect.