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zustand_typed_counter_store_with_actions_and_selectors.ts
typescriptA basic counter application demonstrating state creation, typed hooks, and actio
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zustand_typed_counter_store_with_actions_and_selectors.ts
1import { create } from 'zustand'
2
3interface BearState {
4 bears: number
5 increasePopulation: () => void
6 removeAllBears: () => void
7 updateBears: (newBears: number) => void
8}
9
10const useBearStore = create<BearState>()((set) => ({
11 bears: 0,
12 increasePopulation: () => set((state) => ({ bears: state.bears + 1 })),
13 removeAllBears: () => set({ bears: 0 }),
14 updateBears: (newBears) => set({ bears: newBears }),
15}))
16
17function BearCounter() {
18 const bears = useBearStore((state) => state.bears)
19 return <h1>{bears} around here...</h1>
20}
21
22function Controls() {
23 const increasePopulation = useBearStore((state) => state.increasePopulation)
24 return <button onClick={increasePopulation}>one up</button>
25}