Setting up Deno

asdf Runtime Version Manager

Deno is best installed with a runtime version manager like asdf.

Install asdf-deno plugin (this only needs to be done once, at the very first time):

asdf plugin-add deno https://github.com/asdf-community/asdf-deno.git

Then install Deno with:

# Download and install the latest version of Deno
asdf install deno latest

# OR

asdf install deno x.y.z

Set default version globally:

asdf global deno x.y.z

asdf within a Project

Within a fresh project, run the following:

asdf local deno x.y.z

This creates a file .tool-versions and 'locks' the project to the specified Deno version. Everytime deno command is run within the project, the specified version will automatically be used.

Deno Runtime & std lib Compatibility

See compatibility table here

VS Code Plugin

Official Deno plugin

The plugin needs to be enabled at project level, because not all Javascript/Typescript projects use Deno. Do this with Ctrl + Shift + P and run Deno: Initialize Workspace Configuration.