Function config

packages/plugin-vite/src/mod.ts:90–223

(config, env)

      name: "fresh",
      sharedDuringBuild: true,
      config(config, env) {
        isDev = env.command === "serve";

        return {
          server: {
            watch: {
              // Ignore temp files, editor swap files, and Vite timestamp
              // files. On Linux, these short-lived files can trigger a
              // watchFs race condition in Deno where the watcher tries to
              // open a file that has already been deleted, crashing the
              // dev server with ENOENT.
              ignored: [
                "**/*.tmp.*",
                "**/*.timestamp-*",
                "**/*~",
                "**/.#*",
                "**/*.swp",
                "**/*.swo",
              ],
            },
          },
          esbuild: {
            jsx: "automatic",
            jsxImportSource: "preact",
            jsxDev: env.command === "serve",
          },
          resolve: {
            alias: {
              "react-dom/test-utils": "preact/test-utils",
              "react-dom": "preact/compat",
              react: "preact/compat",
            },
            // Disallow externals, because it leads to duplicate
            // modules with `preact` vs `npm:preact@*` in the server
            // environment.
            noExternal: true,
          },
          optimizeDeps: {
            // Optimize deps somehow leads to duplicate modules or them
            // being placed in the wrong chunks...
            noDiscovery: true,
          },

          publicDir: pathWithRoot(fConfig.staticDir[0], config.root),

          builder: {
            async buildApp(builder) {
              // Build client env first
              const clientEnv = builder.environments.client;
              if (clientEnv !== undefined) {
                await builder.build(clientEnv);
              }

              await Promise.all(
                Object.values(builder.environments).filter((env) =>
                  env !== clientEnv
                ).map((env) => builder.build(env)),
              );