const fetchData = async () => {
  const response = await fetch('/api');
  return response.json();
};

def calculate_total(items):
    return sum(item.price
      for item in items
      if item.is_active)

const App = () => {
  const [count, setCount] = useState(0);
  return (
    <Button onClick={() => setCount(c => c + 1)} />
  );
};

app.post('/api/users', async (req, res) => {
  const user = await User.create(req.body);
  res.status(201).json(user);
});

interface User {
  id: number;
  name: string;
  email: string;
}

const getUser = async (id: number): Promise<User> => {
  return api.get(`/users/${id}`);
};

FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3000
CMD ["npm", "start"]

@RestController
public class UserController {
    @GetMapping("/users/{id}")
    public User getUser(@PathVariable Long id) {
        return userService.findById(id);
    }
}