OneTrial with Firebase Auth

html
<script src="https://onetrial.dev/v1.js" data-key="YOUR_PUBLIC_KEY" async></script>

js
// Signup form (browser): include the token in your POST
const token = await OneTrial.getToken();      // window.OneTrial is set by the snippet
OneTrial.markSubmit();                        // records time-to-submit
formData.append('visitorToken', token);

ts
// Cloud Function (beforeUserCreated blocking function) or your backend after createUserWithEmailAndPassword
const userId = user.uid; const email = user.email!;
const res = await fetch('https://onetrial.dev/api/v1/decisions', {
  method: 'POST',
  headers: { Authorization: `Bearer ${process.env.ONETRIAL_API_KEY}`, 'Content-Type': 'application/json' },
  body: JSON.stringify({ visitorToken, email, ip, userId }),
});
const d = await res.json();
if (d.decision === 'deny') return showPaidPlanOrSupport();
if (d.decision === 'challenge') return redirect(d.challengeUrl); // trial unlocks on the challenge.completed webhook
createTrial(userId);