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A HOC proposal for injecting tracking of events.
import React from 'react';
import withTracking from 'withTracking';
export class MyLink extends React.Component {
static propTypes = {
text: PropTypes.string,
href: PropTypes.string,
track: PropTypes.func,
onClick() {
render() {
return <a href={this.props.href} onclick={this.onClick}>{this.props.text}</a>
export default withTracking(MyLink);
function trackEvent(eventName, businessId, countryName) {
// Build and send XHR event to Amplitude
import { connect } from 'react-redux';
import trackEvent from 'track';
// HOC: Wraps a component and injects a `track` prop for callback.
export default function withTracking(WrappedComponent) {
const Tracker = class extends React.Component {
track(eventName) {
// Gracefully handle things if the store doesn't exist.
// This could happen if we're testing a React tree without using redux or a mockStore in the test.
const businessId = ?'businessId') : undefined;
const countryName = ?'countryName') : undefined;
// Defer to the "trackEvent" for actually sending the event.
trackEvent(eventName, businessId, countryName);
render() {
return <WrappedComponent track={this.track} {...this.props} />;
return connect()(Tracker);
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