How to use the expo-google-sign-in.signInSilentlyAsync function in expo-google-sign-in
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expo / expo / apps / native-component-list / src / screens / GoogleSignInScreen.tsx View on Github 
_syncUserWithStateAsync = async () => {
/*
const user = await GoogleSignIn.signInSilentlyAsync();
this.setState({ user });
*/
if (await GoogleSignIn.signInSilentlyAsync()) {
const photoURL = await GoogleSignIn.getPhotoAsync(256);
const user = await GoogleSignIn.getCurrentUserAsync();
if (user) {
this.setState({
user: {
...user.toJSON() as { displayName: string, email: string },
photoURL: photoURL || user.photoURL!,
},
});
}
} else {
this.setState({ user: undefined });
}
}expo-google-sign-in
Deprecated Expo module to enable native Google authentication
