Rename to typescript extension

client/patterns/fixed-at-corner/Cover.tsx

@@ -0,0 +1,18 @@
+import React from 'react';
+
+import Frame from '../../placeholders/Frame';
+import Triangle from '../../placeholders/Triangle';
+
+const Cover = () => {
+    return (
+        <Frame>
+            <div className="relative">
+                <div className="absolute top-0 left-0">
+                    <Triangle size={32} />
+                </div>
+            </div>
+        </Frame>
+    );
+};
+
+export default Cover;