major: build islands + scan routeDir without importing user code

deno.json

@@ -14,7 +14,8 @@
     ".": "./src/mod.ts",
     "./runtime": "./src/runtime/shared.ts",
     "./dev": "./src/dev/mod.ts",
-    "./compat": "./src/compat.ts"
+    "./compat": "./src/compat.ts",
+    "./do-not-use": "./src/internals.ts"
   },
   "tasks": {
     "test": "deno test -A --parallel",

init/src/init.ts

@@ -349,7 +349,7 @@ ${GRADIENT_CSS}`;
     // Skip this and be silent if there is a network issue.
   }
 
-  const MAIN_TS = `import { App, fsRoutes, staticFiles } from "fresh";
+  const MAIN_TS = `import { App, staticFiles } from "fresh";
 import { define, type State } from "./utils.ts";
 
 export const app = new App<State>();
@@ -371,10 +371,8 @@ const exampleLoggerMiddleware = define.middleware((ctx) => {
 });
 app.use(exampleLoggerMiddleware);
 
-await fsRoutes(app, {
-  loadIsland: (path) => import(\`./islands/\${path}\`),
-  loadRoute: (path) => import(\`./routes/\${path}\`),
-});
+// Include file-system based routes here
+app.fsRoutes();
 
 if (import.meta.main) {
   await app.listen();
@@ -489,14 +487,13 @@ export default function Counter(props: CounterProps) {
   const DEV_TS = `#!/usr/bin/env -S deno run -A --watch=static/,routes/
 ${useTailwind ? `import { tailwind } from "@fresh/plugin-tailwind";\n` : ""}
 import { Builder } from "fresh/dev";
-import { app } from "./main.ts";
 
 const builder = new Builder();
-${useTailwind ? "tailwind(builder, app);" : ""}
+${useTailwind ? "tailwind(builder);" : ""}
 if (Deno.args.includes("build")) {
-  await builder.build(app);
+  await builder.build();
 } else {
-  await builder.listen(app);
+  await builder.listen(() => import("./main.ts"));
 }`;
   await writeFile("dev.ts", DEV_TS);
 
@@ -506,7 +503,7 @@ if (Deno.args.includes("build")) {
       check: "deno fmt --check . && deno lint . && deno check",
       dev: "deno run -A --watch=static/,routes/ dev.ts",
       build: "deno run -A dev.ts build",
-      start: "deno run -A main.ts",
+      start: "deno serve -A _fresh/server.js",
       update: "deno run -A -r jsr:@fresh/update .",
     },
     lint: {

init/src/init_test.ts

@@ -240,5 +240,5 @@ Deno.test("init - errors on missing build cache in prod", async () => {
   const { stderr } = getStdOutput(cp);
   expect(cp.code).toEqual(1);
 
-  expect(stderr).toMatch(/Found 1 islands, but did not/);
+  expect(stderr).toMatch(/Module not found/);
 });

plugin-tailwindcss/src/mod.ts

@@ -1,20 +1,18 @@
 import type { Builder } from "fresh/dev";
-import type { App } from "fresh";
 import twPostcss from "@tailwindcss/postcss";
 import postcss from "postcss";
 import type { TailwindPluginOptions } from "./types.ts";
 
 // Re-export types for public API
 export type { TailwindPluginOptions } from "./types.ts";
 
-export function tailwind<T>(
+export function tailwind(
   builder: Builder,
-  app: App<T>,
   options: TailwindPluginOptions = {},
 ): void {
   const { exclude, ...tailwindOptions } = options;
   const instance = postcss(twPostcss({
-    optimize: app.config.mode === "production",
+    optimize: builder.config.mode === "production",
     ...tailwindOptions,
   }));