diff --git a/packages/react-devtools-shared/src/hydration.js b/packages/react-devtools-shared/src/hydration.js
index 23cb0a68fd9b..2815be0f2d22 100644
--- a/packages/react-devtools-shared/src/hydration.js
+++ b/packages/react-devtools-shared/src/hydration.js
@@ -222,6 +222,7 @@ export function dehydrate(
         ),
       );
 
+    case 'html_all_collection':
     case 'typed_array':
     case 'iterator':
       isPathAllowedCheck = isPathAllowed(path);
diff --git a/packages/react-devtools-shared/src/utils.js b/packages/react-devtools-shared/src/utils.js
index 419aaac0c3dd..87f845105b52 100644
--- a/packages/react-devtools-shared/src/utils.js
+++ b/packages/react-devtools-shared/src/utils.js
@@ -372,6 +372,7 @@ export type DataType =
   | 'data_view'
   | 'date'
   | 'function'
+  | 'html_all_collection'
   | 'html_element'
   | 'infinity'
   | 'iterator'
@@ -438,14 +439,26 @@ export function getDataType(data: Object): DataType {
         return 'iterator';
       } else if (data.constructor && data.constructor.name === 'RegExp') {
         return 'regexp';
-      } else if (Object.prototype.toString.call(data) === '[object Date]') {
-        return 'date';
+      } else {
+        const toStringValue = Object.prototype.toString.call(data);
+        if (toStringValue === '[object Date]') {
+          return 'date';
+        } else if (toStringValue === '[object HTMLAllCollection]') {
+          return 'html_all_collection';
+        }
       }
       return 'object';
     case 'string':
       return 'string';
     case 'symbol':
       return 'symbol';
+    case 'undefined':
+      if (
+        Object.prototype.toString.call(data) === '[object HTMLAllCollection]'
+      ) {
+        return 'html_all_collection';
+      }
+      return 'undefined';
     default:
       return 'unknown';
   }