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Update slices-pattern.md #2046

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Sep 12, 2023
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Update slices-pattern.md #2046

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f21ed48
Update slices-pattern.md
dbritto-dev Sep 11, 2023
d963642
Update typescript.md
dbritto-dev Sep 11, 2023
acea8bc
Fix format
dbritto-dev Sep 11, 2023
496df54
Update typescript.md
dbritto-dev Sep 12, 2023
4b1ce37
Update typescript.md
dbritto-dev Sep 12, 2023
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9 changes: 3 additions & 6 deletions docs/guides/slices-pattern.md
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Original file line number Diff line number Diff line change
Expand Up @@ -67,13 +67,10 @@ export default App
You can update multiple stores, at the same time, in a single function.

```js
import { createBearSlice } from './bearSlice'
import { createFishSlice } from './fishSlice'

export const createBearFishSlice = (set) => ({
export const createBearFishSlice = (set, get) => ({
addBearAndFish: () => {
createBearSlice(set).addBear()
createFishSlice(set).addFish()
get().addBear()
get().addFish()
},
})
```
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34 changes: 29 additions & 5 deletions docs/guides/typescript.md
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Expand Up @@ -367,6 +367,17 @@ interface BearSlice {
addBear: () => void
eatFish: () => void
}

interface FishSlice {
fishes: number
addFish: () => void
}

interface SharedSlice {
addBoth: () => void
getBoth: () => void
}

const createBearSlice: StateCreator<
BearSlice & FishSlice,
[],
Expand All @@ -378,10 +389,6 @@ const createBearSlice: StateCreator<
eatFish: () => set((state) => ({ fishes: state.fishes - 1 })),
})

interface FishSlice {
fishes: number
addFish: () => void
}
const createFishSlice: StateCreator<
BearSlice & FishSlice,
[],
Expand All @@ -392,9 +399,26 @@ const createFishSlice: StateCreator<
addFish: () => set((state) => ({ fishes: state.fishes + 1 })),
})

const useBoundStore = create<BearSlice & FishSlice>()((...a) => ({
const createSharedSlice: StateCreator<
BearSlice & FishSlice,
[],
[],
SharedSlice
> = (set, get) => ({
addBoth: () => {
// you can reuse previous methods
get().addBear()
get().addFish()
// or do them from scratch
// set((state) => ({ bears: state.bears + 1, fishes: state.fishes + 1 })
},
getBoth: () => get().bears + get().fishes,
})

const useBoundStore = create<BearSlice & FishSlice & SharedSlice>()((...a) => ({
...createBearSlice(...a),
...createFishSlice(...a),
...createSharedSlice(...a),
}))
```

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