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hooks mutations article - TodoProvider
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| export const TodoContext = createContext(); | |
| export const TodoProvider = ({ children }) => { | |
| const [apiResponse, setApiResponse] = useState(undefined); | |
| const [draftTodos, setTodoList] = useState(); | |
| useEffect(() => { | |
| const fetchTodos = async () => { | |
| const res = await fetch("./todos.json"); | |
| const response = await res.json(); | |
| setApiResponse(response); | |
| }; | |
| fetchTodos(); | |
| }, []); | |
| // Transforming the data, use of useCallback looks odd here... | |
| // We'll get to that! | |
| const existingTodos = useCallback(() => { | |
| const todoMap = new Map(); | |
| apiResponse?.todos.forEach((todo) => { | |
| todoMap.set(todo.id, todo); | |
| }); | |
| return todoMap; | |
| }, [apiResponse]); | |
| return return ( | |
| <TodoContext.Provider value={{ | |
| /* code coming soon */ | |
| }}> | |
| {children} | |
| </TodoContext.Provider> | |
| } |
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