Unable to get Angular CLI version, though all the requirements are installed?

Issue

I am having difficulties doing anything with the Angular CLI. I have Node, NPM. and Angular all installed, when I run the which command in the terminal they all exist in my /user/local/bin

This is my current node.js: v11.8.0

This is my current npm: 6.5.0

When I run ng -v I am unable to get the version and I get the following message:

$ ng -v
Node.js version v11.8.0 detected.
The Angular CLI requires a minimum Node.js version of either v10.13 or v12.0.

Please update your Node.js version or visit https://nodejs.org/ for additional instructions.

I have tried uninstalling the Angular CLI but, getting the same results.

Solution

I would recommend you to remove your NodeJS installation completely and re-install NodeJS through NVM. This way you can easily switch between multiple NodeJS versions and the other benefit of that for each active NodeJS version you may able to install specific Angular CLI version.

e.g:

nvm install 11  
nvm install 12
nvm alias default 12  
nvm use 11  
npm install @angular/cli -g

• Mac/Linux: https://github.com/nvm-sh/nvm
• Windows: https://github.com/coreybutler/nvm-windows

Also see some details on Angular CLI version here

P.S
If you where using brew, to uninstall NodeJS follow this steps:

brew uninstall node; 
# or `brew uninstall --force node` which removes all versions
brew cleanup;
rm -f /usr/local/bin/npm /usr/local/lib/dtrace/node.d;
rm -rf ~/.npm /usr/local/bin/node;

Answered By - angularrocks.com