fix(Transition): Transition.params() should reduce the values from each node

Author: christopherthielen

src/common/common.ts

@@ -187,6 +187,9 @@ export function merge(dst, ...objs: Object[]) {
   return dst;
 }
 
+/** Reduce function that merges each element of the list into a single object, using angular.extend */
+export const mergeR = (memo, item) => extend(memo, item);
+
 /**
  * Finds the common ancestor path between two states.
  *

src/common/trace.ts

@@ -26,17 +26,17 @@ function normalizedCat(input: Category): string {
   return isNumber(input) ? Category[input] : Category[Category[input]];
 }
 
-let format = pattern([
-  [not(isDefined),            val("undefined")],
-  [isNull,                    val("null")],
-  [isPromise,                 promiseToString],
-  [is(Transition),            invoke("toString")],
-  [is(Resolvable),            invoke("toString")],
-  [isInjectable,              functionToString],
-  [val(true),                 identity]
-]);
-
 function stringify(o) {
+  let format = pattern([
+    [not(isDefined),            val("undefined")],
+    [isNull,                    val("null")],
+    [isPromise,                 promiseToString],
+    [is(Transition),            invoke("toString")],
+    [is(Resolvable),            invoke("toString")],
+    [isInjectable,              functionToString],
+    [val(true),                 identity]
+  ]);
+
   return JSON.stringify(o, (key, val) => format(val)).replace(/\\"/g, '"');
 }
 

src/transition/transition.ts

@@ -22,7 +22,7 @@ import Param from "../params/param";
 import {ViewConfig} from "../view/view";
 
 import {
-  map, find, extend, flatten, unnest, tail, forEach, identity,
+  map, find, extend, mergeR, flatten, unnest, tail, forEach, identity,
   omit, isObject, not, prop, propEq, toJson, val, abstractKey
 } from "../common/common";
 
@@ -145,7 +145,7 @@ export class Transition implements IHookRegistry {
    */
   // TODO
   params(pathname: string = "to"): { [key: string]: any } {
-    return tail(this._treeChanges[pathname]).values;
+    return this._treeChanges[pathname].map(prop("values")).reduce(mergeR, {});
   }
 
   /**