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curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt-get install -y nodejs

## Run `sudo apt-get install -y nodejs` to install Node.js 10.x and npm
## You may also need development tools to build native addons:
     sudo apt-get install gcc g++ make
## To install the Yarn package manager, run:
     curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
     echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
     sudo apt-get update && sudo apt-get install yarn

Install Ember

Back up your computer.
On the command line, in your home directory, create a directory for global installations:

 mkdir ~/.npm-global

Configure npm to use the new directory path:

 npm config set prefix '~/.npm-global'

In your preferred text editor, open or create a ~/.profile file and add this line:

 export PATH=~/.npm-global/bin:$PATH

On the command line, update your system variables:

 source ~/.profile

npm install -g ember-cli

install watchman

IDE 
https://ember-cli.com/user-guide/#webstorm

.profile

if [ -d "$HOME/.npm-global/bin" ] ; then
    PATH="$HOME/.npm-global/bin:$PATH"
fi