fix: avoid caching pageviews data (cotes2020#1849)

_javascript/pwa/sw.js

@@ -3,11 +3,23 @@ import { baseurl } from '../../_config.yml';
 importScripts(`${baseurl}/assets/js/data/swconf.js`);
 
 const purge = swconf.purge;
+const interceptor = swconf.interceptor;
 
 function verifyUrl(url) {
-  const requestPath = new URL(url).pathname;
+  const requestUrl = new URL(url);
+  const requestPath = requestUrl.pathname;
 
-  for (const path of swconf.denyPaths) {
+  if (!requestUrl.protocol.startsWith('http')) {
+    return false;
+  }
+
+  for (const prefix of interceptor.urlPrefixes) {
+    if (requestUrl.href.startsWith(prefix)) {
+      return false;
+    }
+  }
+
+  for (const path of interceptor.paths) {
     if (requestPath.startsWith(path)) {
       return false;
     }

assets/js/data/swconf.js

@@ -22,14 +22,24 @@ const swconf = {
       {% endfor %}
     ],
 
-    {%- comment -%} The request url with below path will not be cached. {%- endcomment -%}
-    denyPaths: [
-      {% for path in site.pwa.cache.deny_paths %}
-        {% unless path == empty %}
-          '{{ path | relative_url }}'{%- unless forloop.last -%},{%- endunless -%}
-        {% endunless  %}
-      {% endfor %}
-    ],
+    interceptor: {
+      {%- comment -%} URLs containing the following paths will not be cached. {%- endcomment -%}
+      paths: [
+        {% for path in site.pwa.cache.deny_paths %}
+          {% unless path == empty %}
+            '{{ path | relative_url }}'{%- unless forloop.last -%},{%- endunless -%}
+          {% endunless  %}
+        {% endfor %}
+      ],
+
+      {%- comment -%} URLs containing the following prefixes will not be cached. {%- endcomment -%}
+      urlPrefixes: [
+        {% if site.analytics.goatcounter.id != nil and site.pageviews.provider == 'goatcounter' %}
+          'https://{{ site.analytics.goatcounter.id }}.goatcounter.com/counter/'
+        {% endif %}
+      ]
+    },
+
     purge: false
   {% else %}
     purge: true