When using 'npm' it requires me to login to github

to have such a problem, it means your command is wrong. take for example you are trying to install angular cli and you omit the @ symbol login will pop like so

npm install -g angular/cli // this will trigger login pop-up
npm install -g @angular/cli // will work fine
so check your command

我应该用cnpm install -g @vue/cli，而不是cnpm install -g vue/cli，少了一个@符号。