Composition API: a Quick overVue
summary
Claims that Vue 3’s Composition API is purely additive and that it makes feature reuse explicit by extracting logic into composable functions are demonstrated by building a small Cats app, creating useSearch and useSorting modules, wiring them with ref and computed, passing callbacks and computed refs into composables, and using setup to return values for templates where refs auto‑unwrap. The demo runs after a few live‑coding fixes, showing composition solves mixin and scoped‑slot limitations while requiring setup returns are explicit.
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