C:\Users\ishara>npm update -g npm npm ERR! Windows_NT 10.0.10240 npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Users\ishara\AppData\Roaming\npm\node_modules\npm\bin\npm-cli.js" "update" "-g" "npm" npm ERR! node v10.13.0 npm ERR! npm v3.5.2 npm ERR! code MODULE_NOT_FOUND
npm ERR! Cannot find module 'internal/util/types' npm ERR! npm ERR! If you need help, you may report this error at: npm ERR! https://github.com/npm/npm/issues
npm ERR! Please include the following file with any support request: npm ERR! C:\Users\ishara\npm-debug.log