roll back travis setting. Downgrade jest & jest-cli to 21.1.0 from 22.0.4

Author: dongcai

.travis.yml

@@ -1,33 +1,43 @@
-os: osx
+dist: trusty
 
 language: node_js
 
 node_js:
-  - "6"
-  - "8"
+  - '8'
+  - '6'
 
 addons:
   apt:
     sources:
-      - ubuntu-toolchain-r-test
+    - ubuntu-toolchain-r-test
     packages:
-      - g++-4.8
+    - gcc-4.8
+    - g++-4.8
 
-sudo: false
+sudo: required
+
+before_install:
+  - sudo apt-get -qq update
+  - curl -o- -L https://yarnpkg.com/install.sh | bash
+  - export PATH="$HOME/.yarn/bin:$PATH"
+
+install:
+  - yarn
 
 before_script:
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
   - export NODE_ENV=development
 
 cache:
+  yarn: true
   directories:
     - node_modules
 
 script:
-  - npm run lint
-  - npm run test
-  - npm run test-node
+  - yarn lint
+  - yarn test
+  - yarn test-node
 
 env:
-  - CXX=g++-4.8
+  - TRAVIS=travis CXX=g++-4.8

package.json

@@ -195,7 +195,7 @@
   },
   "devDependencies": {
     "babel-eslint": "^8.0.3",
-    "babel-jest": "^22.0.4",
+    "babel-jest": "^22.0.6",
     "babel-loader": "^7.0.0",
     "babel-plugin-transform-react-jsx-source": "^6.22.0",
     "better-npm-run": "^0.1.0",
@@ -217,8 +217,8 @@
     "html-webpack-plugin": "^2.30.1",
     "husky": "^0.14.3",
     "identity-obj-proxy": "^3.0.0",
-    "jest": "^22.0.4",
-    "jest-cli": "^22.0.4",
+    "jest": "^21.1.0",
+    "jest-cli": "^21.1.0",
     "less": "^3.0.0-alpha.3",
     "less-loader": "^4.0.3",
     "lighthouse": "^2.6.0",