Async storage of todos

todo.service.ts

import AsyncStorage from "@react-native-async-storage/async-storage";

export interface Todo {
  task: string;
  completed: boolean;
}

class TodoService {
  // Return all todos asynchronously. Returns a Promise
  async getAll(): Promise<Array<Todo>> {
    const keys = await AsyncStorage.getAllKeys();
    const jsonTodos = await AsyncStorage.multiGet(keys);
    // For all stored todos, parse value (index = 1) into a object
    return jsonTodos.map((item) => JSON.parse(item[1]));
  }
  
  // ...
}