Add node tests to travis

Author: jamesdaniels

.travis.yml

@@ -40,8 +40,9 @@ install:
 
 script:
   - yarn run build
-  - ./node_modules/.bin/karma start --single-run --browsers ChromeHeadlessTravis --reporters mocha
-  # Run integration test to make sure our typings are correct for user-land.
-  - node tools/run-typings-test.js
-  # Run the ng6 build test
-  - cd test/ng-build/ng6 && yarn && yarn build:prod
+  - |
+    ./node_modules/.bin/karma start --single-run --browsers ChromeHeadlessTravis --reporters mocha &&
+    yarn test:node &&
+    node tools/run-typings-test.js &&
+    cd test/ng-build/ng6 &&
+    yarn && yarn build:prod