const useThirdPartyAuthSdk = loadable.hook(() => 'some-large-sdk')...const useUserSignIn = () => {  // 'some-large-sdk' is not loaded until this hook is ran  const thirdPartyAuthSdk = useThirdPartyAuthSdk()  const signin = React.useCallback(creds => {    if (!thirdPartyAuthSdk) throw new Error('Auth SDK used before ready')    thirdPartyAuthSdk.initiateSignin(creds)  }, [thirdPartyAuthSdk])  return {    ready: !!thirdPartyAuthSdk,    signin  }}