JavaScript: Create an anonymous user
Creates a new anonymous user.
- Returns an anonymous user
 
- It is recommended to set up captcha for anonymous sign-ins to prevent abuse. You can pass in the captcha token in the 
options param. 
Parameters
Examples
Create an anonymous user
const { data, error } = await supabase.auth.signInAnonymously({
  options: {
    captchaToken
  }
});
Create an anonymous user with custom user metadata
const { data, error } = await supabase.auth.signInAnonymously({
  options: {
    data
  }
})