react app

react-app/node_modules/react/lib/findDOMNode.js

@@ -0,0 +1,69 @@
+/**
+ * Copyright 2013-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule findDOMNode
+ * @typechecks static-only
+ */
+
+'use strict';
+
+var ReactCurrentOwner = require("./ReactCurrentOwner");
+var ReactInstanceMap = require("./ReactInstanceMap");
+var ReactMount = require("./ReactMount");
+
+var invariant = require("./invariant");
+var isNode = require("./isNode");
+var warning = require("./warning");
+
+/**
+ * Returns the DOM node rendered by this element.
+ *
+ * @param {ReactComponent|DOMElement} componentOrElement
+ * @return {DOMElement} The root node of this element.
+ */
+function findDOMNode(componentOrElement) {
+  if ("production" !== process.env.NODE_ENV) {
+    var owner = ReactCurrentOwner.current;
+    if (owner !== null) {
+      ("production" !== process.env.NODE_ENV ? warning(
+        owner._warnedAboutRefsInRender,
+        '%s is accessing getDOMNode or findDOMNode inside its render(). ' +
+        'render() should be a pure function of props and state. It should ' +
+        'never access something that requires stale data from the previous ' +
+        'render, such as refs. Move this logic to componentDidMount and ' +
+        'componentDidUpdate instead.',
+        owner.getName() || 'A component'
+      ) : null);
+      owner._warnedAboutRefsInRender = true;
+    }
+  }
+  if (componentOrElement == null) {
+    return null;
+  }
+  if (isNode(componentOrElement)) {
+    return componentOrElement;
+  }
+  if (ReactInstanceMap.has(componentOrElement)) {
+    return ReactMount.getNodeFromInstance(componentOrElement);
+  }
+  ("production" !== process.env.NODE_ENV ? invariant(
+    componentOrElement.render == null ||
+    typeof componentOrElement.render !== 'function',
+    'Component (with keys: %s) contains `render` method ' +
+    'but is not mounted in the DOM',
+    Object.keys(componentOrElement)
+  ) : invariant(componentOrElement.render == null ||
+  typeof componentOrElement.render !== 'function'));
+  ("production" !== process.env.NODE_ENV ? invariant(
+    false,
+    'Element appears to be neither ReactComponent nor DOMNode (keys: %s)',
+    Object.keys(componentOrElement)
+  ) : invariant(false));
+}
+
+module.exports = findDOMNode;