diff --git a/js/src/@types/shims.d.ts b/js/src/@types/shims.d.ts
new file mode 100644
index 0000000..0f41354
--- /dev/null
+++ b/js/src/@types/shims.d.ts
@@ -0,0 +1,12 @@
+declare module 'flarum/common/models/Discussion' {
+  export default interface Discussion {
+    isApproved(): boolean;
+  }
+}
+
+declare module 'flarum/common/models/Post' {
+  export default interface Post {
+    isApproved(): boolean;
+    canApprove(): boolean;
+  }
+}