Variable ChangeEmailForm`Const`

ChangeEmailForm: React.FC<
    {
        currentEmail: string;
        onSubmit: (
            input: { newEmail: string; password: string },
        ) => Promise<ActionOutcome>;
        requiresPassword: boolean;
    },
> = ...

Change your sign-in email. The change lands only once the new address is confirmed, so success says where the confirmation went.