Create composer.json

composer.json

@@ -0,0 +1,12 @@
+{
+  "name": "xiaoxiaobai5724/flarum-theme-switch",
+  "type": "flarum-extension",
+  "require": { "flarum/core": "^1.0" },
+  "autoload": { "psr-4": { "Demo\\ThemeSwitcher\\": "src/" } },
+  "extra": {
+    "flarum-extension": {
+      "title": "Theme Switcher",
+      "icon": { "name": "fas fa-palette", "backgroundColor": "#673ab7", "color": "#fff" }
+    }
+  }
+}