Check for syntax errors

If you're having trouble deploying an Edge Function, follow these steps to diagnose and resolve the issue.

Diagnose the issue

1. Check function syntax: Run deno check on your function files locally
2. Review dependencies: Verify all imports are accessible and compatible with Deno
3. Examine bundle size: Large functions may fail to deploy

# Check for syntax errors
deno check ./supabase/functions/your-function/index.ts

# Deploy with verbose output
supabase functions deploy your-function --debug

Common causes

• Syntax errors: TypeScript or JavaScript syntax issues in your function code
• Invalid imports: Importing modules that don't exist or aren't compatible with Deno
• Large bundle size: Functions have a 10MB source code limit. See Bundle size issues for more details
• Network issues: Problems reaching the Supabase API during deployment

Before opening a support ticket

Make sure you're using the latest version of the Supabase CLI:

supabase --version
supabase update

If these steps don't resolve the issue, open a support ticket via the Supabase Dashboard and include all output from the diagnostic commands.

Additional resources

• Edge Functions guide
• Bundle size issues
• Edge Function limits