优化了一下watchServer，在编译前先判断这个文件是否被appLoader使用，如果没有使用，则说明不被后端依赖，直接跳过

template/scripts/watchServer.js

@@ -4,6 +4,7 @@ const chokidar = require('chokidar');
 const { join } = require('path');
 const ts = require('typescript');
 const path = require('path');
+const { resolve } = require('path');
 const _ = require('lodash');
 const { startup } = require('@xuchangzju/oak-cli/lib/server/start');
 const projectPath = join(__dirname, '..');
@@ -175,6 +176,22 @@ const onChangeDebounced = _.debounce(async (path, type) => {
         // 控制台清空
         console.clear();
         console.warn(`File ${path} has been ${type}d`);
+        // 先判断一下这个文件在不在require.cache里面
+        const modulePath = resolve(path);
+        // 将src替换为lib
+        const libPath = modulePath.replace('\\src\\', '\\lib\\').replace('.ts', '.js');
+        if (!require.cache[libPath]) {
+            console.warn(`File ${libPath} is not in module cache, skiped.`);
+            isProcessing = false;
+            return;
+        } else {
+            // 如果是删除，则需要发出警告，文件正在被进程使用
+            if (type === 'remove') {
+                console.error(`File ${libPath} is being used, skiped.`);
+                isProcessing = false;
+                return;
+            }
+        }
         const program = ts.createProgram({
             rootNames: [path],
             options,