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Install NodeJS

NodeJS is a runtime environment for JavaScript. It allows us to build and run javascript applications. We shall make extensive use of this throughout the course.

We are following the instructions from this guide to install NodeJS on our machine. The summary of the instructions is below.

DO NOT install Node via the NodeJS website. If you are are getting an error in your terminal following the steps in this guide use the support channel and ask for help

Install NVM

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash

If you get an error that curl is not installed, you can run

brew install curl

You might get a message telling you the installation could not complete because of a missing configuration file:

... more output
=> Profile not found. Tried ~/.bashrc, ~/.bash_profile, ~/.zshrc, and ~/.profile.
=> Create one of them and run this script again
OR
=> Append the following lines to the correct file yourself:
... more output

If the above occurs, run the command

touch ~/.bashrc

then repeat the curl command of step 1 to re-run the nvm installation.

  • Quit the terminal completely and relaunch it.
  • Type nvm -v in the terminal. You should see an output with some version ex. 1.1.10
  • If the above does not work go to Troubleshoot guide, else if it displays a version go to next section

Troubleshoot if nvm does not work

IMPORTANT NOTE If the above command returns an output saying command not found: nvm In this case we need to define if our terminal is using bash or zsh.

Type in the terminal

which $SHELL

There are 2 possible outcomes from the above command

bash:

   /usr/bin/bash

zsh:

   /bin/zsh

Open the file based on the terminal that you have based on the above output

bash:

   touch ~/.bashrc
   code ~/.bashrc

zsh:

   touch ~/.zshrc
   code ~/.zshrc

Add the following code in the end of that file, without touching anything else in there

export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"

Install the latest version of NodeJS

nvm install --lts

  • Restart terminal and run the final command.

    nvm use --lts

  • Confirm that you are using the latest version of Node and npm. Version 16 is the latest stable. If you installed version 17 for Node, that is also OK. npm should be version 8+.

    node -v && npm -v

Further reading on nvm: https://github.com/nvm-sh/nvm

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