react app

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

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+/**
+ * Copyright 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 ReactLifeCycle
+ */
+
+'use strict';
+
+/**
+ * This module manages the bookkeeping when a component is in the process
+ * of being mounted or being unmounted. This is used as a way to enforce
+ * invariants (or warnings) when it is not recommended to call
+ * setState/forceUpdate.
+ *
+ * currentlyMountingInstance: During the construction phase, it is not possible
+ * to trigger an update since the instance is not fully mounted yet. However, we
+ * currently allow this as a convenience for mutating the initial state.
+ *
+ * currentlyUnmountingInstance: During the unmounting phase, the instance is
+ * still mounted and can therefore schedule an update. However, this is not
+ * recommended and probably an error since it's about to be unmounted.
+ * Therefore we still want to trigger in an error for that case.
+ */
+
+var ReactLifeCycle = {
+  currentlyMountingInstance: null,
+  currentlyUnmountingInstance: null
+};
+
+module.exports = ReactLifeCycle;