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Breaking change in 3.2.42 - immediate multiple watcher oldValue is undefined #7070

KaelWD opened this issue Nov 9, 2022 · 1 comment


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KaelWD commented Nov 9, 2022

Vue version


Link to minimal reproduction

Steps to reproduce

Open devtools

What is expected?

'a' is logged

What is actually happening?

TypeError: undefined is not iterable (cannot read property Symbol(Symbol.iterator))

System Info

No response

Any additional comments?


Typescript still says oldVal is [undefined, undefined]

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2 participants