Node.js#
Install
macOS
Download the Node.js installer from https://nodejs.org/en/download/
or
brew install node
Linux
sudo apt install nodejs
sudo apt install npm
Tip
Install nvm to manage multiple versions of node and npm.
Windows Subsystem for Linux
On WSL the recommended approach for installing a current version of Node.js is nvm.
touch ~/.bashrc
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
# Reload your configuration
source ~/.bashrc
nvm install node
# Upgrade npm. You may need to run this twice on WSL.
npm install npm@latest -g
Update npm If you installed npm as part of node you may need to update npm.
sudo npm install -g npm
Initialize a node project by creating a package.json
npm init
Installing dependencies examples
sudo npm install --save ask-sdk moment
sudo npm install --save-dev mocha chai eslint virtual-alexa
If you get an error running mocha tests e.g.
node_modules/.bin/mocha not having execute permissions or mocha Error: Cannot find module './options' delete your node_modules folder and npm install.
Set up ESLint with a configuration file
eslint --init
# you may need to run it as:
# sudo ./node_modules/.bin/eslint --init