What is NVM?
Node Version Manager (NVM), as the name implies, is a tool for managing Node versions on your device.
Different projects on your device may be using different versions of Node. Using only one version (the one installed by npm) for these different projects may not give you accurate execution results.
For example, if you use a Node version of 10.0.0 for a project that uses 12.0.0, you may get some errors. And if you update the Node version to 12.0.0 with npm, and you use it for a project that uses 10.0.0, you may not get the expected experience.
In fact, you would most likely get a warning that says: