React / Next.js

The Databuddy React SDK provides a component for script injection and hooks for custom event tracking. Works with React 18+, Next.js 13+, and other React-based frameworks.

Package: @databuddy/sdk | Import: @databuddy/sdk/react

Installation

bun add @databuddy/sdk

Quick Start

Add the Databuddy component to your root layout:

import { Databuddy } from "@databuddy/sdk/react";

export default function RootLayout({ children }: { children: React.ReactNode }) {
return (
  <html lang="en">
    <body>
      <Databuddy
        clientId={process.env.NEXT_PUBLIC_DATABUDDY_CLIENT_ID!}
        trackWebVitals
        trackErrors
      />
      {children}
    </body>
  </html>
);
}

Databuddy Component

The Databuddy component injects the tracking script and configures analytics. It renders nothing to the DOM.

Props

Prop	Type	Default	Description
`clientId`	`string`	Auto-detected	Your client ID (auto-detects from `NEXT_PUBLIC_DATABUDDY_CLIENT_ID`)
`disabled`	`boolean`	`false`	Disable all tracking
`debug`	`boolean`	`false`	Enable debug logging

Tracking Features

Prop	Default	Description
`trackPerformance`	`true`	Page load times and navigation timing
`trackWebVitals`	`false`	Core Web Vitals (LCP, FID, CLS, TTFB)
`trackErrors`	`false`	JavaScript errors and unhandled rejections
`trackOutgoingLinks`	`false`	Clicks on external links
`trackInteractions`	`false`	Button clicks and form submissions
`trackAttributes`	`false`	Elements with `data-track` attributes
`trackHashChanges`	`false`	Hash changes in the URL

Batching & Performance

Prop	Default	Description
`enableBatching`	`true`	Group events into batches
`batchSize`	`10`	Events per batch (1-50)
`batchTimeout`	`5000`	Batch timeout in ms
`samplingRate`	`1.0`	Event sampling rate (0.0-1.0)

Privacy

Prop	Type	Description
`skipPatterns`	`string[]`	Skip tracking on matching paths
`maskPatterns`	`string[]`	Mask sensitive URL segments

Full Example

import { Databuddy } from "@databuddy/sdk/react";

export default function RootLayout({ children }: { children: React.ReactNode }) {
return (
  <html lang="en">
    <body>
      <Databuddy
        clientId={process.env.NEXT_PUBLIC_DATABUDDY_CLIENT_ID!}
        trackWebVitals
        trackErrors
        trackOutgoingLinks
        enableBatching
        batchSize={20}
        disabled={process.env.NODE_ENV === "development"}
        skipPatterns={["/admin/**", "/internal/*"]}
        maskPatterns={["/users/*", "/orders/**"]}
      />
      {children}
    </body>
  </html>
);
}

Tracking Events

Import tracker helpers to track custom events:

import { track } from "@databuddy/sdk";

function SignupButton() {
const handleClick = () => {
  track("signup_clicked", {
    source: "header",
    plan: "pro"
  });
};

return <button onClick={handleClick}>Sign Up</button>;
}

Common Patterns

import { track, trackError } from "@databuddy/sdk";

// E-commerce
track("product_viewed", {
product_id: "P12345",
category: "Electronics",
price: 299.99
});

track("purchase_completed", {
order_id: "ORD-789",
revenue: 299.99,
currency: "USD"
});

// Feature usage
track("feature_used", {
feature: "export_data",
user_tier: "premium"
});

// Error tracking
try {
await riskyOperation();
} catch (error) {
trackError(error.message, {
  stack: error.stack,
  context: "checkout_flow"
});
}

Environment Setup

NEXT_PUBLIC_DATABUDDY_CLIENT_ID=your-client-id-here

The component auto-detects the client ID from this environment variable.

Pages Router

For Next.js Pages Router, add to _app.tsx:

import { Databuddy } from "@databuddy/sdk/react";
import type { AppProps } from "next/app";

export default function App({ Component, pageProps }: AppProps) {
return (
  <>
    <Databuddy
      clientId={process.env.NEXT_PUBLIC_DATABUDDY_CLIENT_ID!}
      trackWebVitals
    />
    <Component {...pageProps} />
  </>
);
}

Development Mode

Disable tracking during development:

<Databuddy
clientId={process.env.NEXT_PUBLIC_DATABUDDY_CLIENT_ID!}
disabled={process.env.NODE_ENV === "development"}
/>

Data Attributes

Enable automatic tracking of elements with data-track attributes:

<Databuddy
clientId={process.env.NEXT_PUBLIC_DATABUDDY_CLIENT_ID!}
trackAttributes
/>

{/* Automatically tracks button_click event */}
<button data-track="signup_clicked" data-plan="premium">
Sign Up
</button>

Tracker Helpers

track, flush, getAnonymousId, and more helper functions

Feature Flags

Control feature rollouts with FlagsProvider and hooks

Configuration

Complete configuration reference