How can I clear the previous ssl proxy setting of NPM? well, I search a lot, but all post I got is mainly about how to set proxy in corporate network.
set
npm config rm proxy npm config rm https-proxy unset HTTP_PROXY unset HTTPS_PROXY unset http_proxy unset https_proxy
Damn finally this does the trick in Debian Jessie with privoxy (ad remover) installed, Thank you :-)