Create userscript.js

src/addons/addons/paint-rounded-rect-seperate/userscript.js

@@ -0,0 +1,19 @@
+export default async function ({ addon }) {
+    // Wait until the paint editor is loaded
+    await addon.tab.traps.getPaper();
+    
+    const updateToolbar = (enabled) => {
+        ReduxStore.dispatch({
+            type: 'scratch-paint/addon-util/TOGGLE_ROUNDED_RECT_MODE',
+            enabled: enabled
+        });
+    };
+
+    updateToolbar(true);
+    addon.self.addEventListener("disabled", () => {
+        updateToolbar(false);
+    });
+    addon.self.addEventListener("reenabled", () => {
+        updateToolbar(true);
+    });
+}