TelemetryDeck React

A library for using TelemetryDeck in your React app.

Installation

npm install -S @typedigital/telemetrydeck-react

Setup

To set up this library, simply create a TelemetryDeck instance with the factory createrTelemetryDeck and pass it to the TelemetryDeckProvider, which should sit relatively high up in your component tree. You'll need a TelemetryDeck account and an app to be able to use this libary.

import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { TelemetryDeckProvider, createTelemetryDeck } from '@typedigital/telemetrydeck-react';
import { Dashboard } from './Dashboard';

const td = createTelemetryDeck({app: process.env.APP_ID, user: 'anonymous'});

const App = () => {

  return (
    <div>
      <TelemetryDeckProvider telemetryDeck={td}>
        <Dashboard />
      </TelemetryDeckProvider>
    </div>
  );
};

ReactDOM.render(<App />, document.getElementById('root'));

Basic usage

To send signals, use the useTelemetryDeck hook and destructure the various methods that can be used to modify the instance or send signals to TelemetryDeck. For more information, see the TelemetryDeck documentation.

import * as React from 'react';
import { useTelemetryDeck } from '@typedigital/telemetrydeck-react';


function Dashboard() {

  const { signal } = useTelemetryDeck();

  const clickHandler = async () => {
    const res = await signal('click', { event: 'button-click', target: 'Call to Action' })
    console.log(res); // the response of the TelemetryDeck API
  }

  // If you want to track if a user saw a certain page or component just use an effect
  React.useEffect(() => {
    (async () => {
      const { pathname } = window.location;
      await signal('pageview', { component: 'dashboard', path: pathname });
    })();
  }, [])

  return (
    <React.Fragment>
      <h1>My Dashboard</h1>
      <button onClick={async () => await clickHandler()}>
        Click me
      </button>
    </React.Fragment>
  )
}

export {
  Dashboard
}

React Native & Expo Support

telemetrydeck-react also supports React Native or Expo. If no global implementation is available because you are not on the web, TelemetryDeck needs a subtle implementation which can be either injected by extending `globalThis or added to the TelemetryDeck instance.

In the React Native context, a TextEncoder is also needed for it to work properly.

If you are developing an Expo project, you should install the following dependencies in addition to this library.

npm i -S expo-crypto text-encoding

Monkey-Patching crypto and TextEncoder

To patch the functionalities, a file named globals.js should be created first. The following code should be added to this file. This code extends the global object for the React Native Context with the TextEncoder and the crypto.subtle.digest function, which converts a message to a hash.

// globals.js

import * as Crypto from 'expo-crypto';

globalThis.crypto = {
    subtle: {
        digest: (algorithm, message) => Crypto.digest(algorithm, message)
    }
}
global.TextEncoder = require('text-encoding').TextEncoder;

Finally, the created file should be imported into the index.js or any other root file for the bundler.

// index.js

import { registerRootComponent } from 'expo';
import './globals.js';
import App from './App';

registerRootComponent(App);

Feedback & Contributions

We appreciate any feedback. Pull requests, ideas for new features and bug reports are very welcome.

License

MIT

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