Hang when npm install

[xingchch]

below are outputs of npm install. it is hang at the final line.

npm WARN deprecated npmconf@2.1.2: this package has been reintegrated into npm and is now out of date with respect to npm
npm WARN deprecated lodash@1.0.2: lodash@<3.0.0 is no longer maintained. Upgrade to lodash@^4.0.0.
npm WARN deprecated graceful-fs@1.2.3: graceful-fs version 3 and before will fail on newer node releases. Please update to graceful-fs@^4.0.0 as soon as possible.
npm WARN excluding symbolic link index.js -> lib/sass.js
npm WARN excluding symbolic link lib/index.js -> sass.js
npm WARN prefer global node-gyp@3.3.1 should be installed with -g

node-sass@3.4.2 install /home/xingchch/test/react/react-todos/react-todos/node_modules/node-sass
node scripts/install.js

[xingchch]

npm -version
3.7.3
node -v
v5.8.0

[xingchch]

Refer to sass/node-sass#1162 and fixed the issue

npm rebuild node-sass
rm -rf node_modules
npm i