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+---
+name: Svelte State Rune
+description: A uses a state rune with WXT's storage to enable clean subscriptions in Svelte (and TS) as well as persisting state.
+---
+
+```sh
+npm install
+npm run dev
+```
+
+Demonstrates how the browser.storage API allows different parts of the extension share state and reflect activity on the current page.
+
+- The page fires a "counter:updated" event every second.
+- The Content Script handles these events by pushing the event payload into session storage.
+- The CounterState class watches the store and updates its reactive state property on change
+- App.svelte reflects the value of `counterState.state`
+
+Open dev tools or the extension service worker logs, click the extension's action icon and watch the events being fired by the active page update the counter.
+
+When closing and re-opening the Popup, the state is persisted.
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+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Document</title>
+  </head>
+  <body>
+    <h1>Emit events</h1>
+
+    <script>
+      let counter = 0;
+      setInterval(() => {
+        document.dispatchEvent(
+          new CustomEvent("counter:updated", {
+            detail: {
+              counter: counter++,
+            },
+          })
+        );
+      }, 1000);
+    </script>
+  </body>
+</html>