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docs: add Typing Component Slots section to TypeScript guide - #3479
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Description of Problem
The TypeScript with Composition API guide documents typing props and emits, but not slots.
defineSlots()is only covered in the API reference.Forwarding slot props in a recursive component (
<slot v-bind="slotProps" />) also gives TS7022 ('slotProps' implicitly has type 'any'), and the docs don't explain how to fix it.Proposed Solution
Add a "Typing Component Slots" section to
guide/typescript/composition-api.md:defineSlots()usage, linking to the API referencedefineSlots()fixes the TS7022 errorAdditional Information
I checked both examples with
vue-tsc(Vue 3.5, TypeScript 5.9). WithoutdefineSlots()the recursive example reports TS7022; with it, it type-checks.Closes #3475
Part of #2371