fix(removeWidget): check for widgets.length on next tick (#2831)

Author: Maxime Janton

src/lib/InstantSearch.js

@@ -193,10 +193,16 @@ Usage: instantsearch({
       }
     });
 
-    // no need to trigger a search if we don't have any widgets left
-    if (this.widgets.length > 0) {
-      this.helper.search();
-    }
+    // If there's multiple call to `removeWidget()` let's wait until they are all made
+    // and then check for widgets.length & make a search on next tick
+    //
+    // This solves an issue where you unmount a page and removing widget by widget
+    setTimeout(() => {
+      // no need to trigger a search if we don't have any widgets left
+      if (this.widgets.length > 0) {
+        this.helper.search();
+      }
+    }, 0);
   }
 
   /**