Vue version

3.2.25

Link to minimal reproduction

https://sfc.vuejs.org/#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

Steps to reproduce

You only need TS environment support

What is expected?

I want the data type of e to be number

What is actually happening?

Actually it's any

System Info

No response

Any additional comments?

No response

You need to tell typescript the type of the parameter. That's just how it works. Adn it unrelated to Vue.