Workers Deploy Command

Safe, guided deployment workflow for Cloudflare Workers with environment management and pre-deploy validation.

Execution Workflow

Phase 1: Environment Detection

Read and analyze the project configuration:

1. Check for wrangler config:

   • Look for wrangler.jsonc or wrangler.toml
   • If neither exists, abort: "No wrangler configuration found. Run bunx wrangler init first."

2. Parse environments:

   • Extract environment configurations from wrangler config
   • Identify: name, routes, vars, bindings for each environment
   • Common environments: production, staging, dev, preview

3. Check current git status:

   git status --porcelain
   

   • Warn if uncommitted changes exist
   • Suggest committing before deploy

4. Check if wrangler is installed:

   bunx wrangler --version
   

   • If fails, install will happen via bunx

Phase 2: Environment Selection

If --env argument provided:

• Use that environment
• Validate it exists in wrangler config
• If not found, abort with available environments list

If no --env argument: Use AskUserQuestion to select environment:

Question: "Which environment do you want to deploy to?"

• Options (dynamically generated from config):
  • production - Live environment (requires extra confirmation)
  • staging - Pre-production testing
  • dev - Development environment
  • [Any other envs found in config]

Phase 3: Pre-Deploy Validation

Ask user about pre-deploy checks:

Question: "Run pre-deploy validations?"

• Options:
  • Run all checks (tests + types + build) (Recommended)
  • Run tests only
  • Run types only
  • Skip validations (deploy immediately)

Based on selection, run:

Tests (if package.json has test script):

npm run test || bun test

• If tests fail, abort: "Tests failed. Fix issues before deploying."
• Allow user to override with confirmation

Type checking (if TypeScript project):

bunx tsc --noEmit

• If type errors, abort: "Type errors found. Fix before deploying."
• Allow user to override with confirmation

Build (if build script exists):

npm run build || bun run build

• If build fails, abort: "Build failed. Check errors above."

Error Handling: Abort on first failure. Provide clear error messages.

Phase 4: Deployment Confirmation

For production environment: Show detailed confirmation with risk warning:

⚠️  PRODUCTION DEPLOYMENT

Target: production
Worker: [worker-name]
Routes: [route1, route2]
Bindings: [D1, KV, R2, etc.]

Changes will be LIVE immediately after deployment.

Pre-deploy checks:
✅ Tests passed
✅ Types valid
✅ Build successful

Continue with production deployment?

Ask for explicit confirmation: "Type 'yes' to confirm production deployment"

For non-production: Simpler confirmation:

Deploying to: [environment]
Worker: [worker-name]

Continue?

Phase 5: Deployment Execution

Execute wrangler deploy command:

bunx wrangler deploy --env [environment]

Capture output:

• Deployment URL
• Success/failure status
• Any warnings or errors

Monitor deployment:

• Show real-time output from wrangler
• Don't hide errors or warnings

Phase 6: Post-Deploy Verification

After successful deployment:

1. Extract deployment URL from wrangler output

2. Verify worker is responding:

curl -I [deployment-url]

• Check for 200-class status code
• If 500/error, warn about deployment issues

3. Check logs (optional):

bunx wrangler tail --env [environment] --once

• Show recent logs to verify worker is running
• Catch any immediate errors

Phase 7: Summary Report

Generate deployment summary:

✅ Deployment Successful!

**Environment**: [environment]
**Worker**: [worker-name]
**URL**: [deployment-url]
**Version**: [git-commit-hash or timestamp]

**Deployment Details**:
- Routes: [routes]
- Bindings: [bindings]
- Environment Vars: [count] configured

**Verification**:
✅ Worker responding (HTTP 200)
✅ No immediate errors in logs

**Next Steps**:
1. Monitor logs: `wrangler tail --env [environment]`
2. Test functionality: [deployment-url]
3. Check metrics: Cloudflare Dashboard

**Rollback**:
If issues arise, rollback with:
`wrangler rollback --env [environment]`

**Resources**:
- Cloudflare Dashboard: https://dash.cloudflare.com/
- Deployment Docs: https://developers.cloudflare.com/workers/configuration/versions-and-deployments/

Special Cases

Production Deployment Checklist

Before allowing production deploy, verify:

• All tests passed
• No type errors
• Git working directory clean
• User explicitly confirmed "yes"
• Not deploying from feature branch (warn if not main/master)

Failed Deployment Recovery

If deployment fails:

1. Capture exact error message
2. Check common issues:
   • Account not authenticated: wrangler login
   • Insufficient permissions: Check Cloudflare API tokens
   • Bundle too large: Check bundle size limits
   • Invalid wrangler.jsonc: Syntax errors
3. Provide fix guidance
4. Suggest rollback if partial deploy

Environment Variable Secrets

If deployment uses secrets:

Warn if secrets not set:

⚠️  This worker uses environment secrets.
Ensure secrets are configured:
`wrangler secret put SECRET_NAME --env [environment]`

Known secrets from code:
- API_KEY
- DATABASE_URL
- AUTH_SECRET

Continue anyway?

Error Handling

Abort deployment if:

• No wrangler config found
• Environment doesn't exist
• Pre-deploy validation fails (unless user overrides)
• User cancels confirmation
• Wrangler deploy command fails

Provide recovery steps:

• Link to relevant documentation
• Suggest common fixes
• Offer to rollback if needed

Success Criteria

Deployment is successful when:

• ✅ Pre-deploy validations passed
• ✅ Wrangler deploy executed without errors
• ✅ Deployment URL accessible
• ✅ Worker responding to requests
• ✅ No critical errors in logs
• ✅ User receives complete summary

Tips for Claude

1. Safety first: Always validate before deploying to production
2. Clear confirmations: Make production deploys require explicit "yes"
3. Helpful errors: Explain what went wrong and how to fix it
4. Monitor closely: Watch deployment output for warnings
5. Verify thoroughly: Test the deployed worker actually works
6. Document everything: Provide complete deployment summary
7. Reference skills: Point to workers-ci-cd for automated deployments