npm delete the old version before installing the new version?
or will both exist just referencing the new version?
npm delete the old version before installing the new version?
or will both exist just referencing the new version?
No, you need to change the references yourself. The installation of
npm is overridden. For example, now npm3.x , npm install-g npm@latest will be npm6.x after the upgrade.
npm3.x will not exist.
it is strongly recommended to use nvm to manage npm versions. For more information, please see
https://github.com/creationix.
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