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restructure __internals to shave bytes; add react tests (#82)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| import { TemporalState, temporal } from 'zundo'; | ||
| import { StoreApi, useStore, create } from 'zustand'; | ||
|
|
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| interface MyState { | ||
| bears: number; | ||
| increment: () => void; | ||
| decrement: () => void; | ||
| } | ||
|
|
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| const useMyStore = create( | ||
| temporal<MyState>((set) => ({ | ||
| bears: 0, | ||
| increment: () => set((state) => ({ bears: state.bears + 1 })), | ||
| decrement: () => set((state) => ({ bears: state.bears - 1 })), | ||
| })), | ||
| ); | ||
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| type ExtractState<S> = S extends { | ||
| getState: () => infer T; | ||
| } ? T : never; | ||
| type ReadonlyStoreApi<T> = Pick<StoreApi<T>, 'getState' | 'subscribe'>; | ||
| type WithReact<S extends ReadonlyStoreApi<unknown>> = S & { | ||
| getServerState?: () => ExtractState<S>; | ||
| }; | ||
|
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| const useTemporalStore = <S extends WithReact<StoreApi<TemporalState<MyState>>>, U>( | ||
| selector: (state: ExtractState<S>) => U, | ||
| equality?: (a: U, b: U) => boolean, | ||
| ): U => { | ||
| const state = useStore(useMyStore.temporal as any, selector, equality); | ||
| return state | ||
| } | ||
|
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| const HistoryBar = () => { | ||
| const futureStates = useTemporalStore((state) => state.futureStates); | ||
| const pastStates = useTemporalStore((state) => state.pastStates); | ||
| return ( | ||
| <div> | ||
| past states: {JSON.stringify(pastStates)} | ||
| <br /> | ||
| future states: {JSON.stringify(futureStates)} | ||
| <br /> | ||
| </div> | ||
| ); | ||
| }; | ||
|
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| const UndoBar = () => { | ||
| const { undo, redo } = useTemporalStore((state) => ({ | ||
| undo: state.undo, | ||
| redo: state.redo, | ||
| })); | ||
| return ( | ||
| <div> | ||
| <button onClick={() => undo()}>undo</button> | ||
| <button onClick={() => redo()}>redo</button> | ||
| </div> | ||
| ); | ||
| }; | ||
|
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| const StateBar = () => { | ||
| const store = useMyStore(); | ||
| const { bears, increment, decrement } = store; | ||
| return ( | ||
| <div> | ||
| current state: {JSON.stringify(store)} | ||
| <br /> | ||
| <br /> | ||
| bears: {bears} | ||
| <br /> | ||
| <button onClick={increment}>increment</button> | ||
| <button onClick={decrement}>decrement</button> | ||
| </div> | ||
| ); | ||
| }; | ||
|
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| const App = () => { | ||
| return ( | ||
| <div> | ||
| <h1> | ||
| {' '} | ||
| <span role="img" aria-label="bear"> | ||
| 🐻 | ||
| </span>{' '} | ||
| <span role="img" aria-label="recycle"> | ||
| ♻️ | ||
| </span>{' '} | ||
| Zundo! | ||
| </h1> | ||
| <StateBar /> | ||
| <br /> | ||
| <UndoBar /> | ||
| <HistoryBar /> | ||
| </div> | ||
| ); | ||
| }; | ||
|
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||
| export default App; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,8 @@ | ||
| { | ||
| "extends": "tsconfig/nextjs.json", | ||
| "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"], | ||
| "exclude": ["node_modules"] | ||
| "exclude": ["node_modules"], | ||
| "compilerOptions": { | ||
| "jsx": "react-jsx" | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| import { describe, it, expect } from 'vitest'; | ||
| import React from 'react'; | ||
| import { fireEvent, render, screen } from '@testing-library/react'; | ||
| import Reactive from '../../../apps/web/pages/reactive'; | ||
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| describe('React Re-renders when state changes', () => { | ||
| it('it', () => { | ||
| const { queryByLabelText, getByLabelText, queryByText, getByText } = render( | ||
| <Reactive />, | ||
| ); | ||
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| expect(queryByText(/bears: 0/i)).toBeTruthy(); | ||
| expect(queryByText(/increment/i)).toBeTruthy(); | ||
| expect(queryByText(/past states: \[\]/i)).toBeTruthy(); | ||
| expect(queryByText(/future states: \[\]/i)).toBeTruthy(); | ||
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| const incrementButton = getByText(/increment/i); | ||
| fireEvent.click(incrementButton); | ||
| fireEvent.click(incrementButton); | ||
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| expect(queryByText(/bears: 2/i)).toBeTruthy(); | ||
| expect(queryByText(/past states: \[{"bears":0},{"bears":1}\]/i)).toBeTruthy(); | ||
| expect(queryByText(/future states: \[\]/i)).toBeTruthy(); | ||
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| expect(queryByText(/undo/i, { | ||
| selector: 'button', | ||
| })).toBeTruthy(); | ||
|
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| const undoButton = getByText(/undo/i, { | ||
| selector: 'button', | ||
| }); | ||
|
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| fireEvent.click(undoButton); | ||
| fireEvent.click(undoButton); | ||
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| expect(queryByText(/bears: 0/i)).toBeTruthy(); | ||
| expect(queryByText(/past states: \[\]/i)).toBeTruthy(); | ||
| expect(queryByText(/future states: \[{"bears":2},{"bears":1}\]/i)).toBeTruthy(); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| import { expect, afterEach } from 'vitest'; | ||
| import { cleanup } from '@testing-library/react'; | ||
| import matchers from '@testing-library/jest-dom/matchers'; | ||
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| // extends Vitest's expect method with methods from react-testing-library | ||
| expect.extend(matchers); | ||
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| // runs a cleanup after each test case (e.g. clearing jsdom) | ||
| afterEach(() => { | ||
| cleanup(); | ||
| }); |
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