fix: make it so chokidar isnt needed in production

prior to this change if you built the remix app, pruned dev only dependencies and attempted to `npm start` the server would bail as it tried to import chokidar

templates/express/server.js

@@ -2,7 +2,6 @@ import * as fs from "node:fs";
 
 import { createRequestHandler } from "@remix-run/express";
 import { broadcastDevReady, installGlobals } from "@remix-run/node";
-import chokidar from "chokidar";
 import compression from "compression";
 import express from "express";
 import morgan from "morgan";
@@ -36,45 +35,37 @@ app.use(express.static("public", { maxAge: "1h" }));
 
 app.use(morgan("tiny"));
 
-app.all(
-  "*",
-  process.env.NODE_ENV === "development"
-    ? createDevRequestHandler()
-    : createRequestHandler({
-        build,
-        mode: process.env.NODE_ENV,
-      })
-);
-
-const port = process.env.PORT || 3000;
-app.listen(port, async () => {
-  console.log(`Express server listening on port ${port}`);
-
-  if (process.env.NODE_ENV === "development") {
-    broadcastDevReady(build);
-  }
-});
-
-function createDevRequestHandler() {
-  const watcher = chokidar.watch(BUILD_PATH, { ignoreInitial: true });
+if (process.env.NODE_ENV === "development") {
+  app.all("*", async (req, res, next) => {
+    const chokidar = await import("chokidar");
+    const watcher = chokidar.watch(BUILD_PATH, { ignoreInitial: true });
 
-  watcher.on("all", async () => {
-    // 1. purge require cache && load updated server build
-    const stat = fs.statSync(BUILD_PATH);
-    build = import(BUILD_PATH + "?t=" + stat.mtimeMs);
-    // 2. tell dev server that this app server is now ready
-    broadcastDevReady(await build);
-  });
+    watcher.on("all", async () => {
+      // 1. purge require cache && load updated server build
+      const stat = fs.statSync(BUILD_PATH);
+      build = import(BUILD_PATH + "?t=" + stat.mtimeMs);
+      // 2. tell dev server that this app server is now ready
+      broadcastDevReady(await build);
+    });
 
-  return async (req, res, next) => {
     try {
-      //
       return createRequestHandler({
         build: await build,
-        mode: "development",
+        mode: process.env.NODE_ENV,
       })(req, res, next);
     } catch (error) {
       next(error);
     }
-  };
+  });
+} else {
+  app.all("*", createRequestHandler({ build, mode: process.env.NODE_ENV }));
 }
+
+const port = process.env.PORT || 3000;
+app.listen(port, async () => {
+  console.log(`Express server listening on port ${port}`);
+
+  if (process.env.NODE_ENV === "development") {
+    broadcastDevReady(build);
+  }
+});