This class does not work in a Node.js environment.

param

The reCAPTCHA container parameter. Thishas different meaning depending on whether the reCAPTCHA is hidden orvisible. For a visible reCAPTCHA the container must be empty. If a stringis used, it has to correspond to an element ID. The corresponding elementmust also must be in the DOM at the time of initialization.

param

The optional reCAPTCHA parameters. Check thereCAPTCHA docs for a comprehensive list. All parameters are acceptedexcept for the sitekey. Firebase Auth backend provisions a reCAPTCHA foreach project and will configure this upon rendering. For an invisiblereCAPTCHA, a size key must have the value 'invisible'.

param

The corresponding Firebase app. If none isprovided, the default Firebase App instance is used. A Firebase Appinstance must be initialized with an API key, otherwise an error will bethrown.