🐛 Désactive les cookies pour les iframes sur Safari Mobile

Relatif à #893.

source/Tracker.ts

@@ -7,7 +7,9 @@ declare global {
 	}
 }
 
-type PushArgs = ['trackPageView'] | ['trackEvent', ...Array<string | number>]
+type TrackingAction = 'trackPageView' | 'trackEvent' | 'disableCookies'
+
+type PushArgs = [TrackingAction, ...Array<string | number>]
 type PushType = (args: PushArgs) => void
 
 const ua = window.navigator.userAgent
@@ -22,18 +24,15 @@ export default class Tracker {
 	previousPath: string | undefined
 
 	constructor(
-		pushFunction: PushType = args => {
-			// There is an issue with the way Safari handle cookies in iframe, cf.
-			// https://gist.github.com/iansltx/18caf551baaa60b79206. We could probably
-			// do better but for now we don't track action of iOs Safari user in
-			// iFrame -- to avoid errors in the number of visitors in our stats.
-			if (!(iOSSafari && inIframe)) {
-				window._paq.push(args)
-			}
-		}
+		pushFunction: PushType = args => (window?._paq ?? []).push(args)
 	) {
-		if (typeof window !== 'undefined') window._paq = window._paq || []
 		this.push = debounce(200, pushFunction) as PushType
+		// There is an issue with the way Safari handle cookies in iframe, cf.
+		// https://gist.github.com/iansltx/18caf551baaa60b79206.
+		// TODO : We don't need to disable cookies if a cookie is already set
+		if (iOSSafari && inIframe) {
+			pushFunction(['disableCookies'])
+		}
 	}
 
 	connectToHistory(history: History) {