[nav_timing] client-side timing as an extension

ext/nav_timing/info.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shimmie2;
+
+class NavTimingInfo extends ExtensionInfo
+{
+    public const KEY = "nav_timing";
+
+    public string $key = self::KEY;
+    public string $name = "Nav Timing";
+    public array $authors = self::SHISH_AUTHOR;
+    public string $license = self::LICENSE_GPLV2;
+    public string $description = "Log navigation timing data";
+}

ext/nav_timing/init.js

@@ -0,0 +1,6 @@
+const observer = new PerformanceObserver((list) => {
+    list.getEntries().forEach((entry) => {
+        shm_log("timing", {"v": 2, ...entry.toJSON()});
+    });
+});
+observer.observe({ entryTypes: ["navigation"] });