Izmjenjena struktura, dodan backand

web/node_modules/react-dom/lib/ReactDOMNullInputValuePropHook.js

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+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ */
+
+'use strict';
+
+var ReactComponentTreeHook = require('react/lib/ReactComponentTreeHook');
+
+var warning = require('fbjs/lib/warning');
+
+var didWarnValueNull = false;
+
+function handleElement(debugID, element) {
+  if (element == null) {
+    return;
+  }
+  if (element.type !== 'input' && element.type !== 'textarea' && element.type !== 'select') {
+    return;
+  }
+  if (element.props != null && element.props.value === null && !didWarnValueNull) {
+    process.env.NODE_ENV !== 'production' ? warning(false, '`value` prop on `%s` should not be null. ' + 'Consider using the empty string to clear the component or `undefined` ' + 'for uncontrolled components.%s', element.type, ReactComponentTreeHook.getStackAddendumByID(debugID)) : void 0;
+
+    didWarnValueNull = true;
+  }
+}
+
+var ReactDOMNullInputValuePropHook = {
+  onBeforeMountComponent: function (debugID, element) {
+    handleElement(debugID, element);
+  },
+  onBeforeUpdateComponent: function (debugID, element) {
+    handleElement(debugID, element);
+  }
+};
+
+module.exports = ReactDOMNullInputValuePropHook;