by pass npm proxy code example

Example 1: npm install behind proxy

npm config set strict-ssl false
npm config set registry "http://registry.npmjs.org/"
npm config set proxy http://<username><password>@proxy-server-url>:<port>
npm config set https-proxy http://<username><password>@proxy-server-url>:<port>
npm install

Example 2: setting proxy in npm

npm config set proxy http://username:password@host:port
npm config set https-proxy http://username:password@host:port