更新支持es5环境

packages/core/.babelrc

@@ -0,0 +1,18 @@
+{
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "browsers": ["> 1%", "last 2 versions", "ie >= 11"]
+        },
+        "modules": false,
+        "loose": true
+      }
+    ]
+  ],
+  "plugins": [
+    "@babel/plugin-transform-optional-chaining",
+    "@babel/plugin-transform-nullish-coalescing-operator"
+  ]
+}

packages/core/build-rollup.cjs

@@ -62,6 +62,8 @@ function generatePackageJson() {
             'index.cjs.map',
             'index.umd.js',
             'index.umd.js.map',
+            'index.es5.js',
+            'index.es5.js.map',
             'index.d.ts',
             'README.md',
             'LICENSE',
@@ -113,7 +115,7 @@ function copyFiles() {
 
 function showBuildResults() {
     const distDir = './dist';
-    const files = ['index.mjs', 'index.cjs', 'index.umd.js', 'index.d.ts'];
+    const files = ['index.mjs', 'index.cjs', 'index.umd.js', 'index.es5.js', 'index.d.ts'];
     
     console.log('\n📊 构建结果:');
     files.forEach(file => {

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@esengine/ecs-framework",
-  "version": "2.1.45",
+  "version": "2.1.46",
   "description": "用于Laya、Cocos Creator等JavaScript游戏引擎的高性能ECS框架",
   "main": "bin/index.js",
   "types": "bin/index.d.ts",
@@ -51,6 +51,11 @@
   "author": "yhh",
   "license": "MIT",
   "devDependencies": {
+    "@babel/core": "^7.28.3",
+    "@babel/plugin-transform-nullish-coalescing-operator": "^7.27.1",
+    "@babel/plugin-transform-optional-chaining": "^7.27.1",
+    "@babel/preset-env": "^7.28.3",
+    "@rollup/plugin-babel": "^6.0.4",
     "@rollup/plugin-commonjs": "^28.0.3",
     "@rollup/plugin-node-resolve": "^16.0.1",
     "@rollup/plugin-terser": "^0.4.4",

packages/core/rollup.config.cjs

@@ -1,6 +1,7 @@
 const resolve = require('@rollup/plugin-node-resolve');
 const commonjs = require('@rollup/plugin-commonjs');
 const terser = require('@rollup/plugin-terser');
+const babel = require('@rollup/plugin-babel');
 const dts = require('rollup-plugin-dts').default;
 const { readFileSync } = require('fs');
 
@@ -23,6 +24,11 @@ const commonPlugins = [
   }),
   commonjs({
     include: /node_modules/
+  }),
+  babel({
+    babelHelpers: 'bundled',
+    exclude: 'node_modules/**',
+    extensions: ['.js', '.ts']
   })
 ];
 
@@ -102,6 +108,60 @@ module.exports = [
     }
   },
 
+  // ES5兼容构建 - 适用于只支持ES5语法的JavaScript环境
+  {
+    input: 'bin/index.js',
+    output: {
+      file: 'dist/index.es5.js',
+      format: 'cjs',
+      banner: banner + '\n// ES5 Compatible Build for legacy JavaScript environments',
+      sourcemap: true,
+      exports: 'named'
+    },
+    plugins: [
+      resolve({
+        browser: true,
+        preferBuiltins: false
+      }),
+      commonjs({
+        include: /node_modules/
+      }),
+      babel({
+        babelHelpers: 'bundled',
+        exclude: 'node_modules/**',
+        extensions: ['.js', '.ts'],
+        presets: [
+          ['@babel/preset-env', {
+            targets: {
+              browsers: ['ie >= 9', 'chrome >= 30', 'firefox >= 30', 'safari >= 8']
+            },
+            modules: false,
+            loose: true,
+            forceAllTransforms: true
+          }]
+        ],
+        plugins: [
+          '@babel/plugin-transform-optional-chaining',
+          '@babel/plugin-transform-nullish-coalescing-operator'
+        ]
+      }),
+      terser({
+        ecma: 5,
+        format: {
+          comments: /^!/
+        },
+        compress: {
+          drop_console: false,
+          drop_debugger: false
+        }
+      })
+    ],
+    external: [],
+    treeshake: {
+      moduleSideEffects: false
+    }
+  },
+  
   // 类型定义构建
   {
     input: 'bin/index.d.ts',