added migrations for instant delivery

node_modules/react-router/lib/Transition.js

@@ -0,0 +1,75 @@
+/* jshint -W058 */
+
+'use strict';
+
+var Cancellation = require('./Cancellation');
+var Redirect = require('./Redirect');
+
+/**
+ * Encapsulates a transition to a given path.
+ *
+ * The willTransitionTo and willTransitionFrom handlers receive
+ * an instance of this class as their first argument.
+ */
+function Transition(path, retry) {
+  this.path = path;
+  this.abortReason = null;
+  // TODO: Change this to router.retryTransition(transition)
+  this.retry = retry.bind(this);
+}
+
+Transition.prototype.abort = function (reason) {
+  if (this.abortReason == null) this.abortReason = reason || 'ABORT';
+};
+
+Transition.prototype.redirect = function (to, params, query) {
+  this.abort(new Redirect(to, params, query));
+};
+
+Transition.prototype.cancel = function () {
+  this.abort(new Cancellation());
+};
+
+Transition.from = function (transition, routes, components, callback) {
+  routes.reduce(function (callback, route, index) {
+    return function (error) {
+      if (error || transition.abortReason) {
+        callback(error);
+      } else if (route.onLeave) {
+        try {
+          route.onLeave(transition, components[index], callback);
+
+          // If there is no callback in the argument list, call it automatically.
+          if (route.onLeave.length < 3) callback();
+        } catch (e) {
+          callback(e);
+        }
+      } else {
+        callback();
+      }
+    };
+  }, callback)();
+};
+
+Transition.to = function (transition, routes, params, query, callback) {
+  routes.reduceRight(function (callback, route) {
+    return function (error) {
+      if (error || transition.abortReason) {
+        callback(error);
+      } else if (route.onEnter) {
+        try {
+          route.onEnter(transition, params, query, callback);
+
+          // If there is no callback in the argument list, call it automatically.
+          if (route.onEnter.length < 4) callback();
+        } catch (e) {
+          callback(e);
+        }
+      } else {
+        callback();
+      }
+    };
+  }, callback)();
+};
+
+module.exports = Transition;