How to integrate paypal in react native

I am trying to integrate paypal in my react native app. I tried the REST API method as per the paypal docs directly in the app (RN frontend) and its working. Below is the code

Button component

let baseUrl = 'https://api-m.sandbox.paypal.com';........<ButtonComp      onPress={onPressPaypal}      disabled={false}      btnStyle={{backgroundColor: '#0f4fa3', marginVertical: 16}}      text="PayPal"      isLoading={isLoading}    />

on press function

const onPressPaypal = async () => {    setLoading(true);    try {      const token = await paypalApi.generateToken();      const res = await paypalApi.createOrder(token);      setAccessToken(token);      setLoading(false);      if (!!res?.links) {        const findUrl = res.links.find(data => data?.rel == 'approve');        setPaypalUrl(findUrl.href);      }    } catch (error) {      console.log('error', error);      setLoading(false);    }  };

But instead this direct implementation in the frontend, I need to setup a node/express backend and create endpoints and consume those endpoints in the frontend (react native app). Is it possible ? or I need to directly use the paypal api in frontend ? Is there any npm packages for this implementation ?

I see there is one package called react-native-paypal but its not maintained