Document CLOUDFLARE_ENV environment variable for Wrangler #26400
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- Add CLOUDFLARE_ENV to system environment variables documentation - Update environments documentation to mention CLOUDFLARE_ENV usage - Add changelog entry for the new feature Related to cloudflare/workers-sdk#11228 Co-Authored-By: pbacondarwin@cloudflare.com <pete@bacondarwin.com>
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src/content/changelog/workers/2025-11-09-cloudflare-env-variable.mdx
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Co-Authored-By: pbacondarwin@cloudflare.com <pete@bacondarwin.com>
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Nov 10, 2025
| CLOUDFLARE_ENV=production npm run build & wrangler deploy | ||
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| When using `@cloudflare/vite-plugin`, the build process generates a "redirected deploy config" that is flattened to only contain the active environment. Wrangler will validate that the environment specified matches the environment used during the build to prevent accidentally deploying a Worker built for one environment to a different environment. |
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Good suggestion! Added the link to the generated wrangler configuration documentation.
Co-Authored-By: pbacondarwin@cloudflare.com <pete@bacondarwin.com>
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Summary
This PR documents the new
CLOUDFLARE_ENVenvironment variable feature for Wrangler, which allows users to select environments without using the--envflag. This feature is being added in workers-sdk PR #11228.Changes made:
CLOUDFLARE_ENVto the system environment variables documentation with usage examples--envflagKey points for reviewers:
&to run commands in parallel (npm run build & wrangler deploy). Please verify this is the intended behavior vs&&for sequential execution, given the context suggests the environment should be set once and used for both operations--envcommand line argument takes precedence over theCLOUDFLARE_ENVenvironment variable (documented consistently across all three locations)@cloudflare/vite-pluginwhere the environment needs to be consistent between build and deployDocumentation checklist
Link to Devin run: https://app.devin.ai/sessions/fc5ba87ae01f4b21ae0916c0e67beddc
Requested by: @petebacondarwin
Related PR: cloudflare/workers-sdk#11228