What's the best practice for grabbing these values at runtime (locally set with .env) so that when I publish, I can add a comment or footer with the delploy info includiong date of deployment, and the git Sha and commit message?
#making my vercel info available to my Layout page (VERCEL_GIT_COMMIT_SHA,VERCEL_GIT_COMMIT_MESSAGE )
modest nacelle
dim tartanBOT
Hi @modest nacelle. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
Astro provides several ways to work with environment variables, which can be used to store and retrieve deployment information like date, git SHA, and commit message.
- .env files: You can store environment variables in
.envfiles in your project directory. You can also attach a mode (eitherproductionordevelopment) to the filename, like.env.productionor.env.development, which makes the environment variables only take effect in that mode. For example:
# .env file
DEPLOY_DATE="2022-01-01"
GIT_SHA="abc123"
COMMIT_MSG="Initial commit"
Source (https://docs.astro.build/en/guides/environment-variables#env-files)
- Runtime environment variables: If an
.envfile containing environment variables is present when the build process is run, these values will be hard-coded in the output. During the build, the runtime variables must be absent from the.envfile, and you must provide Astro with every environment variable to expect at run-time. For example:
VARIABLE_1=placeholder astro build
This signals to Astro that the actual value will be available when the built application is run. The placeholder value will be ignored by the build process, and Astro will use the value provided at run-time.
Source (https://docs.astro.build/en/guides/integrations-guide/node#runtime-environment-variables)
- Accessing environment variables: Astro uses Vite’s built-in support for environment variables, and lets you use any of its methods to work with them. Note that while all environment variables are available in server-side code, only environment variables prefixed with
PUBLIC_are available in client-side code for security purposes. For example:
SECRET_PASSWORD=password123
PUBLIC_ANYBODY=there
In this example, PUBLIC_ANYBODY (accessible via import.meta.env.PUBLIC_ANYBODY) will be available in server or client code, while SECRET_PASSWORD (accessible via import.meta.env.SECRET_PASSWORD) will be server-side only.
Source (https://docs.astro.build/en/guides/environment-variables)
- Using the CLI: You can also add environment variables as you run your project. For example:
POKEAPI=<https://pokeapi.co/api/v2> npm run dev
Variables set this way will be available everywhere within your project, including on the client.
Source (https://docs.astro.build/en/guides/environment-variables#using-the-cli)
Remember to not load .env files inside configuration files (https://docs.astro.build/en/guides/configuring-astro/#environment-variables). You can use process.env in a configuration file to access other environment variables, like those set by the CLI. You can also use Vite’s loadEnv helper (https://main.vitejs.dev/config/#using-environment-variables-in-config) to manually load .env files.
For type safety and IntelliSense for your environment variables in TypeScript, you can create an env.d.ts file in your src/ directory and configure ImportMetaEnv like this:
interface ImportMetaEnv {
readonly DEPLOY_DATE: string;
readonly GIT_SHA: string;
readonly COMMIT_MSG: string;
// more env variables...
}
interface ImportMeta {
readonly env: ImportMetaEnv;
}
Source (https://docs.astro.build/en/guides/environment-variables#intellisense-for-typescript)
Please note that the actual implementation may vary depending on your specific use case and deployment setup.
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
modest nacelle
@dim tartan Thanks - do you have any specific example for a vercel deployment using the vercel adapter?
dim tartanBOT
Let me check the knowledge base for you. One moment! :books:
I'm sorry, but the provided extracts do not contain specific examples of using environment variables with a Vercel deployment using the Vercel adapter. However, they do provide general instructions on how to deploy an Astro site to Vercel and how to use the Vercel adapter.
To deploy your Astro site to Vercel, you can use either the Vercel website UI or the Vercel CLI. The process is the same for both static and server-side rendered (SSR) Astro sites. If you're deploying through the website UI, you'll need to push your code to your online Git repository, import your project into Vercel, and Vercel will automatically detect Astro and configure the right settings. If you're deploying using the Vercel CLI, you'll need to install the Vercel CLI and run vercel to deploy. Again, Vercel will automatically detect Astro and configure the right settings (source (https://docs.astro.build/en/guides/deploy/vercel#how-to-deploy)).
To enable SSR in your Astro project and deploy on Vercel, you can add the Vercel adapter. This can be done using the astro add command, which 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, you can install the @astrojs/vercel adapter to your project’s dependencies using your preferred package manager and add two new lines to your astro.config.mjs project configuration file (source (https://docs.astro.build/en/guides/deploy/vercel#adapter-for-ssr)).