Stripe Checkout with Next.js & TypeScript

Included functionality

• Stripe Checkout [Check stripe-end branch]
  • Custom Amount Donation with redirect to Stripe Checkout:
    • Server Component: app/stripe-checkout/page.tsx
    • Server Action: app/actions/stripe.ts
    • Checkout Session 'success' page fetches the Checkout Session object from Stripe: stripe-checkout/result/page.tsx
• Stripe Elements [Check master branch]
  • Custom Amount Donation with Stripe Payment Element & PaymentIntents:
    • Server Component: app/stripe-with-elements/page.tsx
    • Server Action: app/actions/stripe.ts
    • Payment Intent 'success' page (via returl_url) fetches the Payment Intent object from Stripe: stripe-with-elements/result/page.tsx
• Webhook handling for post-payment events
  • Route Handler: app/api/webhooks/route.ts

Required configuration

Copy the .env.local.example file into a file named .env.local in the root directory of this project:

cp .env.local.example .env.local

You will need a Stripe account (register) to run this sample. Go to the Stripe developer dashboard to find your API keys and replace them in the .env.local file.

NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=<replace-with-your-publishable-key>
STRIPE_SECRET_KEY=<replace-with-your-secret-key>

Now install the dependencies and start the development server.

npm install
npm run dev
# or
yarn
yarn dev

Forward webhooks to your local dev server

First install the CLI and link your Stripe account.

Next, start the webhook forwarding:

stripe listen --forward-to localhost:3000/api/webhooks

The CLI will print a webhook secret key to the console. Set STRIPE_WEBHOOK_SECRET to this value in your .env.local file.

Setting up a live webhook endpoint

After deploying, copy the deployment URL with the webhook path (https://your-url.vercel.app/api/webhooks) and create a live webhook endpoint in your Stripe dashboard.

Once created, you can click to reveal your webhook's signing secret. Copy the webhook secret (whsec_***) and add it as a new environment variable in your Vercel Dashboard:

• Select your newly created project.
• Navigate to the Settings tab.
• In the general settings scroll to the "Environment Variables" section.

After adding an environment variable you will need to rebuild your project for it to become within your code. Within your project Dashboard, navigate to the "Deployments" tab, select the most recent deployment, click the overflow menu button (next to the "Visit" button) and select "Redeploy".