chore: add trailingComma

test/dom.ts

@@ -5,28 +5,28 @@ function mockHTMLElementOffset() {
     offsetParent: {
       get() {
         return this.parentNode || {};
-      }
+      },
     },
     offsetLeft: {
       get() {
         return parseFloat(window.getComputedStyle(this).marginLeft) || 0;
-      }
+      },
     },
     offsetTop: {
       get() {
         return parseFloat(window.getComputedStyle(this).marginTop) || 0;
-      }
+      },
     },
     offsetHeight: {
       get() {
         return parseFloat(window.getComputedStyle(this).height) || 0;
-      }
+      },
     },
     offsetWidth: {
       get() {
         return parseFloat(window.getComputedStyle(this).width) || 0;
-      }
-    }
+      },
+    },
   });
 }