webauthn
signIn()
signIn<P>(
   provider?, 
   options?, 
authorizationParams?): Promise<P extends RedirectableProviderType ? SignInResponse | undefined : undefined>Initiate a signin flow or send the user to the signin page listing all possible providers. Handles CSRF protection.
Type parameters
| Type parameter | Value | 
|---|---|
| Pextendsundefined|RedirectableProviderType | undefined | 
Parameters
| Parameter | Type | 
|---|---|
| provider? | LiteralUnion<PextendsRedirectableProviderType? BuiltInProviderType | P :BuiltInProviderType> | 
| options? | SignInOptions | 
| authorizationParams? | SignInAuthorizationParams | 
Returns
Promise<P extends RedirectableProviderType ? SignInResponse | undefined : undefined>