See Installation page of the manual.

Install Deno

See my gist.

Upgrade Deno

Get the latest Deno.

$ deno upgrade

Install a target version. This will replace the existing installed Deno.

$ deno upgrade --version 1.0.1

See GitHub Releases and pick a valid version number.

Upgrade Deno package

If not locked, the use of std lib packages can break after running a command above.

Upgrade your stdlib and other installed packages with the reload command:

$ deno cache --reload index.ts

That only works within a project though and didn’t seem effective on an empty index page, so I need to research that more.

The safest is to always do imports of locked versions in your apps.

See Managing packages page for more info around locking and upgrading standard lib and 3rd-party packages.

Uninstall Deno

Delete Deno binary

$ rm $(which deno)

Delete Deno directory

Including .deno/bin which has installed CLI packages.

$ rm -rf ~/.deno

Delete cache

The cache includes downloaded packages.

On macOS, here is the configuration:

$ deno info

DENO_DIR location: "/Users/mcurrin/Library/Caches/deno"
Remote modules cache: "/Users/mcurrin/Library/Caches/deno/deps"
Emitted modules cache: "/Users/mcurrin/Library/Caches/deno/gen"
Language server registries cache: "/Users/mcurrin/Library/Caches/deno/registries"

So then you know what to delete. e.g.

$ rm -rf ~/Library/Caches/deno