This adapter allows Astro to deploy your SSR site to Deno targets.
Learn how to deploy your Astro site in our Deno Deploy deployment guide.
Why Astro DenoSection titled Why Astro Deno
If you’re using Astro as a static site builder—its behavior out of the box—you don’t need an adapter.
If you wish to use server-side rendering (SSR), Astro requires an adapter that matches your deployment runtime.
Deno is a runtime similar to Node, but with an API that’s more similar to the browser’s API. This adapter provides access to Deno’s API and creates a script to run your project on a Deno server.
InstallationSection titled Installation
Add the Deno adapter to enable SSR in your Astro project with the following
astro add command. This will install the adapter and make the appropriate changes to your
astro.config.mjs file in one step.
If you prefer to install the adapter manually instead, complete the following two steps:
Install the Deno adapter to your project’s dependencies using your preferred package manager. If you’re using npm or aren’t sure, run this in the terminal:
astro.config.mjsproject configuration file with the changes below.
Next, update your
preview script in
package.json to run
You can now use this command to preview your production Astro site locally with Deno.
UsageSection titled Usage
After performing a build there will be a
dist/server/entry.mjs module. You can start a server by importing this module in your Deno app:
start option below for how you can have more control over starting the Astro server.
You can also run the script directly using deno:
ConfigurationSection titled Configuration
To configure this adapter, pass an object to the
deno() function call in
startSection titled start
This adapter automatically starts a server when it is imported. You can turn this off with the
If you disable this, you need to write your own Deno web server. Import and call
handle from the generated entry script to render requests:
port and hostnameSection titled port and hostname
You can set the port (default:
8085) and hostname (default:
0.0.0.0) for the deno server to use. If
start is false, this has no effect; your own server must configure the port and hostname.
ExamplesSection titled Examples
The Astro Deno example includes a
preview command that runs the entry script directly. Run
npm run build then
npm run preview to run the production deno server.
TroubleshootingSection titled Troubleshooting
For help, check out the
#support channel on Discord. Our friendly Support Squad members are here to help!
You can also check our Astro Integration Documentation for more on integrations.
ContributingSection titled Contributing
This package is maintained by Astro’s Core team. You’re welcome to submit an issue or PR!
ChangelogSection titled Changelog
See CHANGELOG.md for a history of changes to this integration.