@sekolahcode/devpulse-node

Node.js SDK for DevPulse — server-side error tracking with Express/Connect middleware support.

Requirements

• Node.js ≥ 18
• A running DevPulse server

Installation

npm install @sekolahcode/devpulse-node

No external runtime dependencies — uses only Node.js built-in modules.

Quick Start

const { DevPulse } = require('@sekolahcode/devpulse-node');

DevPulse.init({
  dsn: 'https://your-devpulse-host/api/ingest/YOUR_API_KEY',
  environment: 'production',
  release: '1.0.0',
});

After init(), uncaught exceptions and unhandled promise rejections are captured automatically.

Express Integration

Mount errorHandler() after all other middleware and routes:

const express = require('express');
const { DevPulse } = require('@sekolahcode/devpulse-node');

DevPulse.init({ dsn: 'https://your-devpulse-host/api/ingest/YOUR_API_KEY' });

const app = express();

app.get('/', (req, res) => res.send('Hello'));

// Must be last — catches errors passed via next(err)
app.use(DevPulse.errorHandler());

app.listen(3000);

API

DevPulse.init(config)

Option	Default	Description
dsn	(required)	https://<host>/api/ingest/<api_key>
environment	"production"	Environment tag attached to every event
release	null	Release/version tag (e.g. "1.2.3")
enabled	true	Enable / disable the SDK globally
timeout	3000	HTTP request timeout in milliseconds
maxBreadcrumbs	20	Maximum breadcrumbs retained per event
captureUnhandled	true	Auto-capture uncaughtException and unhandledRejection
beforeSend	null	Hook to inspect/modify or drop events before sending

DevPulse.capture(error, extra?)

Manually capture an Error or any thrown value.

try {
  await riskyOperation();
} catch (err) {
  await DevPulse.capture(err, { orderId: 42 });
}

DevPulse.captureMessage(message, level?, extra?)

Capture a plain string message. level defaults to "info".

DevPulse.captureMessage('Payment gateway timeout', 'warning');

DevPulse.setUser(user) / DevPulse.clearUser()

Attach user identity to all subsequent events.

DevPulse.setUser({ id: 123, email: 'user@example.com' });

// Later, on logout:
DevPulse.clearUser();

DevPulse.addBreadcrumb(crumb)

Manually add a breadcrumb to the trail included with the next event.

DevPulse.addBreadcrumb({
  category: 'db',
  message: 'SELECT users WHERE id = ?',
  level: 'info',
});

DevPulse.errorHandler()

Returns an Express/Connect-compatible 4-argument error handler middleware. Captures the error, attaches request context (method, URL, scrubbed headers), then calls next(err) to pass the error along.

app.use(DevPulse.errorHandler());

Request headers are automatically scrubbed — authorization, cookie, set-cookie, and x-api-key are replaced with [redacted] before being sent.

beforeSend hook

Inspect or modify the payload before it is sent. Return null or false to drop the event entirely.

DevPulse.init({
  dsn: '...',
  beforeSend(event) {
    // Drop health-check noise
    if (event.request?.url?.includes('/health')) return null;
    return event;
  },
});

TypeScript

The package ships with TypeScript declarations (src/index.d.ts). No @types/ package needed.

import { DevPulse, DevPulseNodeConfig } from '@sekolahcode/devpulse-node';

const config: DevPulseNodeConfig = {
  dsn: 'https://your-devpulse-host/api/ingest/YOUR_API_KEY',
  environment: 'production',
};

DevPulse.init(config);

License

MIT — see LICENSE