chore: convert to TypeScript

extensions/statistics/js/tsconfig.json

@@ -0,0 +1,16 @@
+{
+  // Use Flarum's tsconfig as a starting point
+  "extends": "flarum-tsconfig",
+  // This will match all .ts, .tsx, .d.ts, .js, .jsx files in your `src` folder
+  // and also tells your Typescript server to read core's global typings for
+  // access to `dayjs` and `$` in the global namespace.
+  "include": ["src/**/*", "../vendor/flarum/core/js/dist-typings/@types/**/*", "@types/**/*"],
+  "compilerOptions": {
+    // This will output typings to `dist-typings`
+    "declarationDir": "./dist-typings",
+    "baseUrl": ".",
+    "paths": {
+      "flarum/*": ["../vendor/flarum/core/js/dist-typings/*"]
+    }
+  }
+}