edge-function-architect

To scaffold a Supabase edge function with mirrored test logic, run the scaffold script with a function name to automatically generate both the Deno backend directory and a mirrored Vitest-based test harness.

Mirrored tests for Deno and Node are needed to keep validation rules synchronized across runtimes, reducing context-switching and enabling reliable cross-runtime validation from day one in mixed-runtime serverless backends.

Generating a Vitest test harness applies to new edge function scaffolding, creating both backend structure and mirrored tests together. It does not retroactively apply mirrored test logic to existing standalone edge functions.

The best way to keep validation rules consistent across Deno and Node is to scaffold edge functions with mirrored test logic, enforcing shared basic structure and validation rules across both runtimes through automated templates.

Scaffolding edge functions with mirrored logic does not require manual test setup, as the scaffold script automatically generates a minimal test harness alongside the backend code to enforce consistent validation.

You should not use mirrored test logic for edge function scaffolding if your backend operates on a single runtime without cross-runtime validation needs, as the mirrored structure adds unnecessary test synchronization overhead.