pesapal3-sdk

A Node.js library for integrating PesaPal payment services into your applications. It provides a comprehensive, type-safe interface for payment-related operations

PesaPal API Integration

This project connects to the PesaPal API to handle payments. Here’s what it does:

• Get Tokens: Retrieves tokens needed to make secure API requests.
• Handle Payments: Listens for payment notifications from PesaPal (IPN).

Key Dependencies

The project relies on several important packages:

• For Production:
  • axios: Used to send HTTP requests.
  • axios-mock-adapter: Helps in testing by mocking requests.
  • log4js: Used for logging messages.
  • tracer: Assists with debugging.
• For Development:
  • ESLint plugins for maintaining code quality.
  • TypeScript for adding type safety.
  • Testing tools like supertest and vitest.

Logging

The application logs important information using log4js. You can find these logs in the pesapal.log file, which helps in debugging issues.

IPN Notifications

Make sure to set up your IPN URL in your PesaPal account settings so that the application can receive payment notifications.

Installation

with npm

npm install pesapal3-sdk

with yarn

yarn add pesapal3-sdk

Usage

import { initialisePesapal, Iconfig, IpayDetails } from "pesapal3-sdk";

// this credentials are from your PesaPal account, login or register here: https://pesapal.com/
const config: Iconfig = {
  PESAPAL_ENVIRONMENT: "live", // or "sandbox"
  PESAPAL_CONSUMER_KEY: "your-consumer-key",
  PESAPAL_CONSUMER_SECRET: "your-consumer-secret",
  PESAPAL_IPN_URL: "https://yourserverdomain/pesapal/ipn",
};

const paymentInstance = initialisePesapal(config);

const details: IpayDetails = {
  amount: 1000,
  currency: "USD",
  description: "This is a test payment",
  // ...other_details
};

const ordered = await paymentInstance.submitOrder(
  details,
  "ProductId",
  "description"
);

if (ordered.success) {
  console.log(ordered.response);
} else {
  console.error(ordered.error);
}

// Handle IPN callback, this is the endpoint that PesaPal will call when a payment is completed and must be registered in your PesaPal account
// for express.js
app.get("/ipn", async (req, res) => {
  const currntUrl = new URL(req.url);
  const searchParams = currntUrl.searchParams;

  const orderTrackingId = searchParams.get("OrderTrackingId") as string;
  const orderNotificationType = searchParams.get(
    "OrderNotificationType"
  ) as string;
  const orderMerchantReference = searchParams.get(
    "OrderMerchantReference"
  ) as string;

  if (!paymentInstance) {
    // choose how to handle this error
    // may be just return a response
    return res
      .status(500)
      .send({ success: false, err: "internal server error or something else" });
  }

  const response = await paymentInstance.getTransactionStatus(orderTrackingId);
  return response;
});

Documentation

Complete documentation is available on PESAPAL3.

License

pesapal3-sdk is licensed under the MIT License.