import { defineConfig } from "vite";

export default defineConfig(({ mode }) => ({
  base: "/",
  // 03-03: the harness constant (declared ambient in main.ts; canonical home
  // is web/src/vite-env.d.ts under plan 03-04) is REAL only in --mode harness
  // builds and statically false everywhere else — with a bare ambient global
  // referenced in main.ts, this define keeps plain `vite dev` from throwing a
  // ReferenceError while the fallback mock install there still fires via
  // import.meta.env.DEV. 03-04's dual-build config keys on the same mode.
  define: {
    __ARAHARAH_HARNESS__: JSON.stringify(mode === "harness"),
  },
  build: {
    outDir: "dist",
    emptyOutDir: true,
    target: "es2022",
  },
  server: {
    port: 5173,
    strictPort: true,
  },
}));