I\'m currently unable to run npm install in any project since today.
I\'m running node v8.2.1 & npm 5.3.0 (installed via nvm).
When typing npm
May be you are sitting behind a corporation firewall which uses proxy everywhere. Depending on your situation, you may to modify local .npmrc for your current project instead of the global one that affects all npm commands on your computer.
You can equivalently set the configuration properties using commands of the form "npm config set ", e.g. npm config set registry http://registry.npmjs.org/
Execute below commands on terminal:-
npm config set registry
npm config set https-proxy null
npm config set proxy null