fix(UrlMatcher): don't decode default values

Author: nateabele

src/urlMatcherFactory.js

@@ -216,12 +216,12 @@ UrlMatcher.prototype.exec = function (path, searchParams) {
   for (i = 0; i < nPath; i++) {
     param = params[i];
     cfg = this.params[param];
-    values[param] = cfg.type.decode(isDefined(m[i + 1]) ? m[i + 1] : cfg.value);
+    values[param] = isDefined(m[i + 1]) ? cfg.type.decode(m[i + 1]) : cfg.value;
   }
   for (/**/; i < nTotal; i++) {
     param = params[i];
     cfg = this.params[param];
-    values[param] = cfg.type.decode(isDefined(searchParams[param]) ? searchParams[param] : cfg.value);
+    values[param] = isDefined(searchParams[param]) ? cfg.type.decode(searchParams[param]) : cfg.value;
   }
 
   return values;

test/urlMatcherFactorySpec.js

@@ -270,8 +270,8 @@ describe("urlMatcherFactory", function () {
         params: { id: { value: null } }
       });
       expect(m.exec('/users/1138')).toEqual({ id: 1138 });
-      expect(m.exec('/users/').id.toString()).toBe("NaN");
-      expect(m.exec('/users').id.toString()).toBe("NaN");
+      expect(m.exec('/users/').id).toBeNull();
+      expect(m.exec('/users').id).toBeNull();
     });
 
     it("should correctly match multiple", function() {
@@ -281,14 +281,14 @@ describe("urlMatcherFactory", function () {
       expect(m.exec('/users/1138')).toEqual({ id: 1138, state: null });
       expect(m.exec('/users/1138/NY')).toEqual({ id: 1138, state: "NY" });
 
-      expect(m.exec('/users/').id.toString()).toBe("NaN");
+      expect(m.exec('/users/').id).toBeNull();
       expect(m.exec('/users/').state).toBeNull();
 
-      expect(m.exec('/users').id.toString()).toBe("NaN");
+      expect(m.exec('/users').id).toBeNull();
       expect(m.exec('/users').state).toBeNull();
 
       expect(m.exec('/users/NY').state).toBe("NY");
-      expect(m.exec('/users/NY').id.toString()).toBe("NaN");
+      expect(m.exec('/users/NY').id).toBeNull();
     });
 
     it("should correctly format with or without values", function() {