BotFramework-WebChat: tsc && npm run build-css && webpack --progress failed while runing npm install

this is the snippet of errors npm ERR! code ELIFECYCLE npm ERR! errno 2 npm ERR! botframework-webchat@0.10.6 build: tsc && npm run build-css && webpack --progress npm ERR! Exit status 2 npm ERR! npm ERR! Failed at the botframework-webchat@0.10.6 build script ‘tsc && npm run build-css && webp –progress’. npm ERR! Make sure you have the latest version of node.js and npm installed. npm ERR! If you do, this is most likely a problem with the botframework-webchat package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! tsc && npm run build-css && webpack --progress npm ERR! You can get information on how to open an issue for this project with: npm ERR! npm bugs botframework-webchat npm ERR! Or if that isn’t available, you can get their info via: npm ERR! npm owner ls botframework-webchat npm ERR! There is likely additional logging output above.

npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\hpadmin\AppData\Roaming\npm-cache_logs\2017-05-09T09_42_10_932Z-debug.log