[Type/vue3.5]: Destructure prop allow assign wrong types

[RayGuo-ergou]

Vue - Official extension or vue-tsc version

2.1.6

VSCode version

none

Vue version

3.5.12

TypeScript version

5.6.2

System Info

No response

package.json dependencies

No response

Steps to reproduce

interface Props {
  amount?: number;
}
const { amount = '1'} = defineProps<Props>();

What is expected?

When assigning string to number it should type mismatch error.

What is actually happening?

It accepts the wrong type value and then infers the type of amount to number|"1"|undefined

Link to minimal reproduction

https://play.vuejs.org/#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

Any additional comments?

It seems will not render tho, but no typescript error.

[KazariEX]

I think it's a limitation of TS.

[RayGuo-ergou]

Right forgot it's type casting.