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import {analyticsCode, anonymizeIp} from '@params';
let dataLayer;
function isDoNotTrackEnabled() {
if (typeof window === 'undefined') {
return false;
}
const {doNotTrack, navigator} = window;
// Do Not Track Settings across browsers
const dnt = (doNotTrack || navigator.doNotTrack || navigator.msDoNotTrack);
if (!dnt) {
return false;
}
return dnt === true ||
dnt === 1 ||
dnt === 'yes' ||
(typeof dnt === 'string' && dnt.charAt(0) === '1');
}
function gtag() {
dataLayer.push(arguments);
}
/**
* Function that tracks a click on an outbound link in Analytics.
*
* This function takes a valid URL string as an argument, optional
* 'isBlank' argument, and uses that URL string as the event label.
*
* Setting the transport method to 'beacon' lets the hit be sent using
* navigator.sendBeacon() in browser that support it. The navigator.sendBeacon()
* method asynchronously sends an HTTP POST request containing a small amount of
* data to a web server.
*/
function trackOutboundLink(url, isBlank = false) {
gtag('event', 'click', {
'event_label': url,
'event_category': 'outbound',
'transport_type': 'beacon',
'event_callback': () => {
if (!isBlank) {
document.location = url;
}
}
});
}
function trackInternalEvent(label, category) {
gtag('event', 'click', {
'event_label': label,
'event_category': category
});
}
function onClickCallback(event) {
const element = event.target;
const className = element.getAttribute('class');
// Track menu show
if (className === 'sidebar-toggle') {
trackInternalEvent('Sidebar Toggle', 'navigation');
}
// Track feeds click
if (className === 'menu-feeds-item') {
const feedType = element.dataset.feedType;
trackInternalEvent(`Get ${feedType}`, 'feed');
return;
}
// Track only external URLs.
if ((element.tagName !== 'A') || (element.host === window.location.host)) {
return;
}
// Track outbound link click
trackOutboundLink(
event.target,
event.target.getAttribute('target') !== '_blank'
);
}
if (isDoNotTrackEnabled()) {
// Skip analytics for users with Do Not Track enabled
console.info('[TRACKING]: Respecting DNT with respect to analytics...'); // eslint-disable-line no-console
} else {
// Known DNT values not set, so we will assume it's off.
if (analyticsCode) {
(function () {
// New Google Site Tag (gtag.js) tagging/analytics framework
// See: https://developers.google.com/gtagjs
const baseUrl = 'https://www.googletagmanager.com';
const params = new URLSearchParams({
id: analyticsCode
});
let script = document.createElement('script');
script.src = baseUrl + '/gtag/js?' + params.toString();
script.type = 'text/javascript';
script.async = true;
document.getElementsByTagName('head')[0].appendChild(script);
}());
dataLayer = window.dataLayer = window.dataLayer || [];
gtag('js', new Date());
const month = 30 * 24 * 60 * 60; // 30 days, in seconds
// Setup the project analytics code and send a pageview
gtag('config', analyticsCode, {
'anonymize_ip': anonymizeIp,
'cookie_expires': month
});
gtag('set', {
'cookie_flags': 'SameSite=None;Secure'
});
// Outbound link tracking.
document.addEventListener('click', onClickCallback, false);
}
}
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