fix: fix dao extension in prod (#206)

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##### Checklist
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[x]. -->

- [ ] `npm test` passes
- [ ] tests and/or benchmarks are included
- [ ] documentation is changed or added
- [ ] commit message follows commit guidelines

##### Affected core subsystem(s)
<!-- Provide affected core subsystem(s). -->


##### Description of change
<!-- Provide a description of the change below this comment. -->

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- any feature?
- close https://github.com/eggjs/egg/ISSUE_URL
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit


- **Refactor**
- Improved robustness in module constructor handling to dynamically
determine and filter data access objects based on file extensions.
- Modified path construction logic for loading SQL maps to include the
determined file extension.
- Introduced constant for file extension and updated `LoaderUtil` class
to include a static property for holding this value.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

core/dal-runtime/src/SqlMapLoader.ts

@@ -3,14 +3,15 @@ import { TableModel, SqlMap } from '@eggjs/dal-decorator';
 import { Logger } from '@eggjs/tegg';
 import { BaseSqlMapGenerator } from './BaseSqlMap';
 import { TableSqlMap } from './TableSqlMap';
+import { LoaderUtil } from '@eggjs/tegg/helper';
 
 export class SqlMapLoader {
   private readonly logger: Logger;
   private readonly tableModel: TableModel;
   private readonly sqlMapPath: string;
 
   constructor(tableModel: TableModel, moduleDir: string, logger: Logger) {
-    this.sqlMapPath = path.join(moduleDir, 'dal/extension', `${tableModel.clazz.name}Extension.ts`);
+    this.sqlMapPath = path.join(moduleDir, 'dal/extension', `${tableModel.clazz.name}Extension${LoaderUtil.extension}`);
     this.logger = logger;
     this.tableModel = tableModel;
   }

core/loader/src/LoaderUtil.ts

@@ -8,6 +8,8 @@ const Module = module.constructor.length > 1
   /* istanbul ignore next */
   : BuiltinModule;
 
+const EXTENSION = Object.keys((Module as any)._extensions).find(t => t === '.ts') ? '.ts' : '.js';
+
 interface LoaderUtilConfig {
   extraFilePattern?: string[];
 }
@@ -18,6 +20,8 @@ export class LoaderUtil {
     this.config = config;
   }
 
+  static extension = EXTENSION;
+
   static filePattern(): string[] {
     const extensions = Object.keys((Module as any)._extensions);
     const extensionPattern = extensions.map(t => t.substring(1))

plugin/dal/lib/DataSource.ts

@@ -21,6 +21,7 @@ import { EggObject, EggObjectLifeCycleContext } from '@eggjs/tegg-runtime';
 import { TableModelManager } from './TableModelManager';
 import { MysqlDataSourceManager } from './MysqlDataSourceManager';
 import { SqlMapManager } from './SqlMapManager';
+import { LoaderUtil } from '@eggjs/tegg/helper';
 
 @MultiInstanceProto({
   accessLevel: AccessLevel.PUBLIC,
@@ -36,8 +37,7 @@ import { SqlMapManager } from './SqlMapManager';
     } catch {
       return [];
     }
-
-    const daos = dirents.filter(t => t.endsWith('DAO.ts'));
+    const daos = dirents.filter(t => t.endsWith(`DAO${LoaderUtil.extension}`));
     // eslint-disable-next-line @typescript-eslint/no-var-requires
     const daoClazzList = daos.map(t => {
       // eslint-disable-next-line @typescript-eslint/no-var-requires