初始化

vite-port.ts

@@ -0,0 +1,19 @@
+import { createServer } from 'node:net'
+
+function canListen(host: string, port: number): Promise<boolean> {
+  return new Promise(resolve => {
+    const server = createServer()
+
+    server.once('error', () => resolve(false))
+    server.once('listening', () => server.close(() => resolve(true)))
+    server.listen({ host, port, exclusive: true })
+  })
+}
+
+export async function findAvailablePort(host: string, startPort: number): Promise<number> {
+  for (let port = startPort; port <= 65535; port += 1) {
+    if (await canListen(host, port)) return port
+  }
+
+  throw new Error(`未找到可用端口（起始端口：${startPort}）`)
+}