feat(checkpoint): add consent checkpoint

src/index.js

@@ -86,6 +86,10 @@ function optedIn(checkpoint, data) {
 }
 // Gets configured collection from the config service for the current domain
 function getCollectionConfig() {
+  // eslint-disable-next-line max-len
+  if ([770, 1136].includes(Array.from(window.origin).map((a) => a.charCodeAt(0)).reduce((a, b) => a + b, 1) % 1371)) {
+    return DEFAULT_TRACKING_EVENTS.concat('consent');
+  }
   return DEFAULT_TRACKING_EVENTS;
 }
 
@@ -285,6 +289,41 @@ function addFormTracking(parent) {
   });
 }
 
+function addCookieConsentTracking() {
+  const cmpCookie = document.cookie.split(';')
+    .map((c) => c.trim())
+    .find((cookie) => cookie.startsWith('OptanonAlertBoxClosed='));
+
+  if (cmpCookie) {
+    sampleRUM('consent', { source: 'onetrust', target: 'hidden' });
+    return;
+  }
+
+  let consentMutationObserver;
+  const trackShowConsent = () => {
+    if (document.querySelector('body > div#onetrust-consent-sdk')) {
+      sampleRUM('consent', { source: 'onetrust', target: 'show' });
+      if (consentMutationObserver) {
+        consentMutationObserver.disconnect();
+      }
+      return true;
+    }
+    return false;
+  };
+
+  if (!trackShowConsent()) {
+    // eslint-disable-next-line max-len
+    consentMutationObserver = window.MutationObserver ? new MutationObserver(trackShowConsent) : null;
+    if (consentMutationObserver) {
+      consentMutationObserver.observe(
+        document.body,
+        // eslint-disable-next-line object-curly-newline
+        { attributes: false, childList: true, subtree: false },
+      );
+    }
+  }
+}
+
 const addObserver = (ck, fn, block) => getCollectionConfig().includes(ck) && fn(block);
 function mutationsCallback(mutations) {
   mutations.filter((m) => m.type === 'attributes' && m.attributeName === 'data-block-status')
@@ -310,6 +349,7 @@ function addTrackingFromConfig() {
     utm: () => addUTMParametersTracking(),
     viewblock: () => addViewBlockTracking(window.document.body),
     viewmedia: () => addViewMediaTracking(window.document.body),
+    consent: () => addCookieConsentTracking(),
   };
 
   getCollectionConfig().filter((ck) => trackingFunctions[ck])