Deno Startup

Starting up with Deno is very simple. Deno is a secure JavaScript and TypeScript runtime, this means Deno does not introduce another new programming language but uses an already existing, popularly known programming language JavaScript. You can also power the Deno by using TypeScript (a typed superset of JavaScript that compiles to plain JavaScript.). 

Working With Deno

Deno is a single binary executable file that works with all major operating systems: macOS, Linux, and Windows. Unline Node.js, Deno has no external dependencies.

Download and install Deno

The easiest way to download and install Deno is by using deno_install. This provides convenience scripts to download and install the binary.

Download Deno on macOS and Linux

To download and install Deno on your macOS or Linux computer:

Step 1

Open your terminal by pressing  Ctrl + Option + Shift + T on macOs or  Ctrl + Alt + T on Linux

Step 2

Run the code below in your terminal

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

Download Deno on Windows Using Powershell

To download and install Deno on your Windows computer using Powershell:

Step 1

To open Powershell on Windows, press  Ctrl + Shift + Enter

Step 2

Run the code below in your Powershell terminal

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

Download Deno on Windows Using Scoop

To download and install Deno on your Windows computer using Scoop:

Step 1

Open Powershell on Windows by pressing  Ctrl + Shift + Enter

Step 2

Run the code below in your Powershell terminal

scoop install deno

Download Deno on Windows Using Chocolatey

To download and install Deno on your Windows computer using Chocolatey:

Step 1

To open Powershell on Windows, press  Ctrl + Shift + Enter

Step 2

Run the code below in your Powershell terminal

choco install deno

Download Deno on macOS Using Homebrew

To download and install Deno on macOS using Homebrew:

Step 1

Open your terminal by pressing  Ctrl + Option + Shift + T on macOS

Step 2

Run the code below in your terminal

brew install deno

Download Deno on macOS, Linux and Windows Using Cargo

To download and install Deno on macOS, Linux and Windows using Cargo:

Step 1

Open your terminal by pressing  Ctrl + Option + Shift + T on macOS or Ctrl + Alt + T on Linux or Ctrl + Shift + Enter on Windows (Powershell).

Step 2

Run the code below in your terminal

cargo install deno

The above processes should show download progress that lets you know when Deno is installed. The final success display on Linux should look like the image below:

Download Deno Manually on macOS, Linux and Windows

Deno has a script that can be used to also download and installed Deno manually, by downloading a zip file at github.com/denoland/deno/releases. These packages contain just a single executable file.

Test Deno

Now that you have Deno downloaded and installed on your computer, the next step is to test it to make sure all is working fine.

To test your installation, run deno --version. If this prints the Deno version to the console the installation was successful!

Run a Code

Open your terminal and type deno, a Deno interactive terminal will appear, type in the following code.

console.log('Hello, Welcome Deno!');

  Do It Yourself

What You Should Know at the End of This Chapter

• You should be able to install and start running the Deno program on your computer.