B2B-88: add starter kit structure and elements

packages/billing/stripe/src/services/stripe-sdk.ts

@@ -0,0 +1,22 @@
+import 'server-only';
+
+import { StripeServerEnvSchema } from '../schema/stripe-server-env.schema';
+
+const STRIPE_API_VERSION = '2025-04-30.basil';
+
+/**
+ * @description returns a Stripe instance
+ */
+export async function createStripeClient() {
+  const { default: Stripe } = await import('stripe');
+
+  // Parse the environment variables and validate them
+  const stripeServerEnv = StripeServerEnvSchema.parse({
+    secretKey: process.env.STRIPE_SECRET_KEY,
+    webhooksSecret: process.env.STRIPE_WEBHOOK_SECRET,
+  });
+
+  return new Stripe(stripeServerEnv.secretKey, {
+    apiVersion: STRIPE_API_VERSION,
+  });
+}