@paykernel/integration-express

Thin Express adapter for @paykernel/integration-http. Node-only.

import express from "express";
import { expressRawJson, expressWebhook } from "@paykernel/integration-express";

const app = express();
app.post("/webhooks/stripe", expressRawJson(), expressWebhook({
  gateway: "stripe", client, engine, handler,
}));
app.post("/payments", express.json(), (req, res) => { ... });

• expressRawJson() is express.raw({ type: "application/json" }) — use only on webhook routes. type-is handles ; charset=utf-8 automatically (no custom type function needed).
• Gateway-aware object-body: if req.body is already a parsed object, tap/moyasar/paymob (object-HMAC gateways, see integration-http/src/process.ts:130) serialize via JSON.stringify and forward as rawBody; string-HMAC gateways (stripe, paypal, myfatoorah, etc.) fail-closed with 400 { error: "invalid_webhook" } without calling the client (re-serialization would not be byte-identical).
• Uses req.headers and req.query string values. Handles Buffer/string/Uint8Array bodies (preserves Buffer.isBuffer guard).