diff --git a/projects/demo/src/typings.d.ts b/projects/demo/src/typings.d.ts
index 0bd7443e529a..e3253eab6369 100644
--- a/projects/demo/src/typings.d.ts
+++ b/projects/demo/src/typings.d.ts
@@ -16,3 +16,21 @@ declare module '*?raw' {
 
     export = result;
 }
+
+declare module '*.md' {
+    const result: string;
+
+    export = result;
+}
+
+declare module '*.less' {
+    const result: string;
+
+    export = result;
+}
+
+declare module '*.ts?raw' {
+    const result: string;
+
+    export = result;
+}