re-enabling goatcounter

layouts/partials/footer.html

@@ -161,7 +161,7 @@
 
 <!-- goatcounter JS -->
 
-{{/*  <script>
+<script>
 // GoatCounter: https://www.goatcounter.com
 // This file is released under the ISC license: https://opensource.org/licenses/ISC
 ;(function() {
@@ -313,7 +313,24 @@
 		var url = goatcounter.url(vars)
 		if (!url)
 			return warn('not counting because path callback returned null')
-		navigator.sendBeacon(url)
+
+		if (!navigator.sendBeacon(url)) {
+			// This mostly fails due to being blocked by CSP; try again with an
+			// image-based fallback.
+			var img = document.createElement('img')
+			img.src = url
+			img.style.position = 'absolute'  // Affect layout less.
+			img.style.bottom = '0px'
+			img.style.width = '1px'
+			img.style.height = '1px'
+			img.loading = 'eager'
+			img.setAttribute('alt', '')
+			img.setAttribute('aria-hidden', 'true')
+
+			var rm = function() { if (img && img.parentNode) img.parentNode.removeChild(img) }
+			img.addEventListener('load', rm, false)
+			document.body.appendChild(img)
+		}
 	}
 
 	// Get a query parameter.
@@ -418,4 +435,4 @@
 				goatcounter.bind_events()
 		})
 })();
-</script>  */}}
+</script>