Use nvm For Managing Dev Environments For Any Version of Angular

Install nodejs
1. Install xcode
$ xcode-select --install
2. Install nvm
$ curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash
3. Open another bash session to get settings from nvm install
4. List installed node versions
$ nvm list
5. Or list from the cloud (last 9 versions)
$ nvm ls-remote | tail -n9
6. Install v14.5.0
$ nvm install v14.5.0
7. Setup this version as default
$ nvm use v14.5.0
$ nvm alias default v14.5.0
8. Check node version
$ node -v
v14.5.0
9. Update npm
$ npm install -g npm
10. Check npm version
$ npm -v
6.14.6

Install yarn package manager
1. $ npm install -g yarn

Install angular cli on local project
1. Go to project base directory
$ cd ./project/ui
2. Add angular cli (with versioning if needed)
$ yarn add @angular/cli@9.1.12
3. Check version
$ ng --version
Angular CLI: 9.1.12
Node: 14.5.0
OS: darwin x64
Angular: 9.1.12