refactor(server): simplify router middleware with next() (#21720)

packages/opencode/src/server/adapter.node.ts

@@ -0,0 +1,66 @@
+import { createAdaptorServer, type ServerType } from "@hono/node-server"
+import { createNodeWebSocket } from "@hono/node-ws"
+import type { Hono } from "hono"
+import type { Adapter } from "./adapter"
+
+export const adapter: Adapter = {
+  create(app: Hono) {
+    const ws = createNodeWebSocket({ app })
+    return {
+      upgradeWebSocket: ws.upgradeWebSocket,
+      async listen(opts) {
+        const start = (port: number) =>
+          new Promise<ServerType>((resolve, reject) => {
+            const server = createAdaptorServer({ fetch: app.fetch })
+            ws.injectWebSocket(server)
+            const fail = (err: Error) => {
+              cleanup()
+              reject(err)
+            }
+            const ready = () => {
+              cleanup()
+              resolve(server)
+            }
+            const cleanup = () => {
+              server.off("error", fail)
+              server.off("listening", ready)
+            }
+            server.once("error", fail)
+            server.once("listening", ready)
+            server.listen(port, opts.hostname)
+          })
+
+        const server = opts.port === 0 ? await start(4096).catch(() => start(0)) : await start(opts.port)
+        const addr = server.address()
+        if (!addr || typeof addr === "string") {
+          throw new Error(`Failed to resolve server address for port ${opts.port}`)
+        }
+
+        let closing: Promise<void> | undefined
+        return {
+          port: addr.port,
+          stop(close?: boolean) {
+            closing ??= new Promise((resolve, reject) => {
+              server.close((err) => {
+                if (err) {
+                  reject(err)
+                  return
+                }
+                resolve()
+              })
+              if (close) {
+                if ("closeAllConnections" in server && typeof server.closeAllConnections === "function") {
+                  server.closeAllConnections()
+                }
+                if ("closeIdleConnections" in server && typeof server.closeIdleConnections === "function") {
+                  server.closeIdleConnections()
+                }
+              }
+            })
+            return closing
+          },
+        }
+      },
+    }
+  },
+}