Merge pull request #3 from pzuraq/bugfix/add-is-descriptor

[BUGFIX] Adds the isDescriptor flag

.travis.yml

@@ -3,7 +3,7 @@ language: node_js
 node_js:
   # we recommend testing addons with the same minimum supported node version as Ember CLI
   # so that your addon works for all apps
-  - "6"
+  - '6'
 
 sudo: false
 dist: trusty
@@ -34,24 +34,25 @@ jobs:
   include:
     # runs linting and tests with current locked deps
 
-    - stage: "Tests"
-      name: "Tests"
+    - stage: 'Tests'
+      name: 'Tests'
       install:
         - yarn install --non-interactive
       script:
         - yarn lint:hbs
         - yarn lint:js
         - yarn test
 
-    - name: "Floating Dependencies"
+    - name: 'Floating Dependencies'
       script:
         - yarn test
 
     # we recommend new addons test the current and previous LTS
     # as well as latest stable release (bonus points to beta/canary)
-    - stage: "Additional Tests"
+    - stage: 'Additional Tests'
       env: EMBER_TRY_SCENARIO=ember-lts-2.18
     - env: EMBER_TRY_SCENARIO=ember-lts-3.4
+    - env: EMBER_TRY_SCENARIO=ember-lts-3.8
     - env: EMBER_TRY_SCENARIO=ember-release
     - env: EMBER_TRY_SCENARIO=ember-beta
     - env: EMBER_TRY_SCENARIO=ember-canary

config/ember-try.js

@@ -31,6 +31,14 @@ module.exports = function() {
             }
           }
         },
+        {
+          name: 'ember-lts-3.8',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.8.0'
+            }
+          }
+        },
         {
           name: 'ember-release',
           npm: {

vendor/ember-decorators-polyfill/index.js

@@ -203,6 +203,8 @@ import {
     }
   }
 
+  DecoratorDescriptor.prototype.isDescriptor = true;
+
   function computedDecorator(fn, params) {
     let dec = function(prototype, key, desc) {
       assert(