added migrations for instant delivery

node_modules/react-router/lib/locations/HistoryLocation.js

@@ -0,0 +1,86 @@
+'use strict';
+
+var LocationActions = require('../actions/LocationActions');
+var History = require('../History');
+
+var _listeners = [];
+var _isListening = false;
+
+function notifyChange(type) {
+  var change = {
+    path: HistoryLocation.getCurrentPath(),
+    type: type
+  };
+
+  _listeners.forEach(function (listener) {
+    listener.call(HistoryLocation, change);
+  });
+}
+
+function onPopState(event) {
+  if (event.state === undefined) {
+    return;
+  } // Ignore extraneous popstate events in WebKit.
+
+  notifyChange(LocationActions.POP);
+}
+
+/**
+ * A Location that uses HTML5 history.
+ */
+var HistoryLocation = {
+
+  addChangeListener: function addChangeListener(listener) {
+    _listeners.push(listener);
+
+    if (!_isListening) {
+      if (window.addEventListener) {
+        window.addEventListener('popstate', onPopState, false);
+      } else {
+        window.attachEvent('onpopstate', onPopState);
+      }
+
+      _isListening = true;
+    }
+  },
+
+  removeChangeListener: function removeChangeListener(listener) {
+    _listeners = _listeners.filter(function (l) {
+      return l !== listener;
+    });
+
+    if (_listeners.length === 0) {
+      if (window.addEventListener) {
+        window.removeEventListener('popstate', onPopState, false);
+      } else {
+        window.removeEvent('onpopstate', onPopState);
+      }
+
+      _isListening = false;
+    }
+  },
+
+  push: function push(path) {
+    window.history.pushState({ path: path }, '', path);
+    History.length += 1;
+    notifyChange(LocationActions.PUSH);
+  },
+
+  replace: function replace(path) {
+    window.history.replaceState({ path: path }, '', path);
+    notifyChange(LocationActions.REPLACE);
+  },
+
+  pop: History.back,
+
+  getCurrentPath: function getCurrentPath() {
+    return decodeURI(window.location.pathname + window.location.search);
+  },
+
+  toString: function toString() {
+    return '<HistoryLocation>';
+  }
+
+};
+
+module.exports = HistoryLocation;