Node.js 8 ends its support at the end of 2019. Node 12 will be supported
until April 2022 which is way past AngularJS end of support.
Some dependencies needed to be updated to make them work in Node.js 12.
If one uses nvm to manage Node.js versions, the .nvmrc file makes `nvm use`
switch to the version specified in .nvmrc. There are scripts that invoke
it automatically when cd'ing to directories containing .nvmrc so that you
never run build commands using a wrong Node version, see:
https://github.com/creationix/nvm/blob/v0.31.2/README.markdown#zsh