Is it normal to have 2 packages in npm? Trying to install angular cli

Question

I typed in "sudo npm install npm -g". I was following the instructions in the video at this link: https://docs.npmjs.com/getting-started/installing-node . As you can see that it was stated at the bottom that 2 packages was updated. Is this normal? What should I do?

Also, since I was trying to install angular cli, I typed in "npm install -g @angular/cli" but the terminal on my mac was stuck in a loop so I had to terminate it. So I thought that I may have to start over again. So I typed in "sudo npm uninstall -g angular-cli @angular/cli", but I got this result:

The warning said that the npm doesn't support Node.js v9.2.0. I can't understand this since I did try to update by following the video above. So does it have to do with the two packages I mentioned above?

Answer 1

it normally has package.json but sometimes package-lock.json is auto generated too. So, after finishing installing, it might be referring to updating the two packages. Here is a helpful link to clarify package-lock.json - https://docs.npmjs.com/files/package-lock.json