import { defineConfig } from "vitest/config";

// Pure-logic unit tests only (cart/discount math, invoice tax-rate
// grouping, bundle-contents string building) — no jsdom, no Next.js
// server runtime, no Payload/DB. `node` environment is enough since none
// of this touches the DOM. See each app/lib/**/__tests__ file for what's
// covered and why.
export default defineConfig({
  test: {
    environment: "node",
    include: ["app/**/__tests__/**/*.test.ts"],
  },
});