message: build: update the scripts/release/post-check script for 6.0.x
diff: mkdir tmp
  cd tmp
  npm init -y
  -npm install typescript@2.6 rxjs@5.5.0 zone.js@0.8.10 @angular/{animations,core,common,forms,router,platform-browser,platform-browser-dynamic,platform-webworker,platform-webworker-dynamic,platform-server,service-worker,compiler,compiler-cli,upgrade,language-service} --save
  +npm install typescript@~2.7.0 rxjs@^6.0.0 zone.js@~0.8.26 @angular/{animations,core,common,forms,router,platform-browser,platform-browser-dynamic,platform-webworker,platform-webworker-dynamic,platform-server,service-worker,compiler,compiler-cli,upgrade,language-service,elements} --save
  cd ..
  rm -rf tmp
  