IE 11中没有加载Angular 2

Question

我们有一个带Angular 2的Asp.net MVC 5 Web应用程序

它支持Chrome / Firefox / Edge，但无法在IE 11中加载。它显示以下错误。

tsconfig ：

{
  "compilerOptions": {
    "target": "es2015",   
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": true,
    "types": []
  },
  "exclude": [
    "node_modules",
    "jspm_packages"
  ],
  "compileOnSave": true
}

Layout.cshtml：

<!-- 1. Load libraries -->
    <!-- Polyfill(s) for older browsers -->
    <script src="/node_modules/core-js/client/shim.min.js"></script>    
    <script src="/node_modules/zone.js/dist/zone.js"></script>    
    <script src="/node_modules/systemjs/dist/system.src.js"></script>
    <!-- 2. Configure SystemJS -->
    <script src="/systemjs.config.js"></script>
    <script>
        System.import('app').catch(function (err) { console.error(err); });
    </script>

有没有办法让它在IE10 / IE11中运行???

Answer 1

您用于编译器的target版本正在生成IE不支持的代码（ES2015）。将其更改为旧版本。

Answer 2

将tsConfig代码替换为下面的tsConfig代码

{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": true,
"types": [],
"lib": [ "es2015", "es2017", "dom" ]
},
"exclude": [
"node_modules"
],
"compileOnSave": true
}