Install Deno on Windows, Linux, and Mac Operating Systems

In the official Deno documentation, there are shell commands to install Deno on Windows, Mac, and Linux. We will run that command and for Mac and Linux we will have to update the bashrc or zshrc file with a script.

In this post, I just explained in more detail what the docs said. So, It's safe to follow the instructions, and also running these commands on your computer will not modify your system. You are just installing an application and that's all.

Deno Installation on Windows OS

Click on the Start or Press Windows Key, type PowerShell, and then click Windows PowerShell. It will open PowerShell on your windows.

Now, Paste the command from below on PowerShell and hit Enter.

iwr https://deno.land/x/install/install.ps1 -useb | iex

It will take a while to download and finish the installation.

After successfully installed type deno --version on PowerShell and hit Enter to verify if Deno installed or not.

Deno Installation on Mac or Linux OS

If you are on Linux, first you have to install curl for installing Deno. Because most Linux distributions work with wget which is another command-line utility for downloading files from the web.

curl is usually available by default on Macs so you don't have to install it. Still, you can check it by running curl -V on your terminal.

To install curl on Ubuntu/Debian OS, run the command below.

sudo apt install curl

Now, run the next command on your terminal to download and install Deno.

curl -fsSL https://deno.land/x/install/install.sh | sh

You will get a message like below after successfully installing Deno.

Archive:  /YOUR_USERNAME/.deno/bin/deno.zip
  inflating: deno
Deno was installed successfully to /home/YOUR_USERNAME/.deno/bin/deno
Manually add the directory to your $HOME/.bash_profile (or similar)
  export DENO_INSTALL="/home/YOUR_USERNAME/.deno"
  export PATH="$DENO_INSTALL/bin:$PATH"
Run '/YOUR_USERNAME/.deno/bin/deno --help' to get started

As the message says, You have to manually add the script in your bashrc or zshrc file.

How to Manually add the directory in $HOME/.bash_profile or $HOME/.zshrc

There are two ways to open your bashrc or zshrc file. Try any method from below.

Method 1: Use file manager to open bashrc or zshrc

Open the Home($HOME) directory on your file manager. By default, File managers start with the Home directory. Also, make sure you have turned on the Show hidden files option on your computer.

You will able to see the bashrc or zshrc file on your file manager. Open the file with your favorite text editor.

Method 2: Use the terminal to open bashrc or zshrc

If you are in Ubuntu, You will have Gedit text editor installed, or even if you don't have it installed you can use Nano editor.

For macOS try the nano command also.

# for gedit text editor
gedit ~/.bashrc
# or for GNU nano editor
nano ~/.bashrc

After successfully opening the bashrc or zshrc file on your text editor, copy the script from the Deno installation message and paste it at the end of the line.

If you lost the message try the code below. Just make sure to replace YOUR_USERNAME with your pc username(i.e., john).

# deno
export DENO_INSTALL="/home/YOUR_USERNAME/.deno"
export PATH="$DENO_INSTALL/bin:$PATH"

Next, save the file and close the editor and terminal. I believe that's all you have to do to install Deno.

Now, Open up your terminal again and run the command below to verify that Deno has been installed successfully.

deno --version

You should get the output of the Deno and Typescript version.

Conclusion

Well, Good Luck with Deno Web Development. I am a fan of Typescript. That is why I am happy that they released Deno alongside Node JS.

If you use VS Code text editor, There is an official plugin you should install to ignore .ts import error and enable Deno IntelliSense in VS Code.