upgrade node version

//First, clear the npm cache:
	npm cache clean -f

//Install n, Node’s version manager:
	npm install -g n
    
//With the n module installed, you can use it to:
	Install the latest stable version: n stable
	Install the latest release: n latestcurl -o- https://raw.githubusercontent.com/creationix/nvm/v0.32.1/install.sh | bash

update node

sudo update nodenvm install v12.16.2npm-windows-upgrade --npm-version latest