Public environment variables misnamed in auto setup

[brandtam]

When following the setup instructions using the npm create sanity@latest init --env command in the app directory the script creates a .env file with the correct values for the environment variables. However the Names are incorrect.

It is created as:

app/.env

SANITY_PROJECT_ID="xxxxxxx"
SANITY_DATASET="production"

When it should be:

app/.env

PUBLIC_SANITY_PROJECT_ID="xxxxxxx"
PUBLIC_SANITY_DATASET="production"

This is due to the configuration that Public env variables have the Prefix of "PUBLIC_"

see the docs https://kit.svelte.dev/docs/modules#$env-static-public

Suggested Fix:
Easy way: Update the docs to inform people to edit the /app/.env file and prefix the generated variables with "PUBLIC_"
Hard way: add a flag to the install script to handle Framework specifics such as this. Something like npm create sanity@latest init --env --sveltekit

[stipsan]

Verified, we've been setting PUBLIC_ prefixes manually in the test deploy: https://vercel.com/sanity-io/sanity-template-sveltekit-clean/settings/environment-variables

[RitaDias]

👋 Just adding a comment here to say thanks for reporting and that I've been able to repro as of 5.12.0)

[rexxars]

This issue has been moved from sanity-io/sanity as part of a CLI issue migration. We will investigate whether it is still relevant.