javascript - Typescript 中的 System.Import 不会覆盖默认路径

Question

我是 Typescript 和 Angular2 的新手。我有一个 app 文件夹，我在其中创建 ts 文件，并尝试将转译的“js”文件生成到另一个构建的文件夹中。 “Js”文件已成功生成，但是当我尝试使用 System.import('built') 将文件导入到 html 时，脚本未被引用并抛出 404。 “app”和“built”文件夹都添加到根目录中。这是我的 tsconfig.json :

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": false,
    "outDir": "built"
  }
}

这里我将脚本导入到index.html:

System.import('built').catch(function(err){ console.error(err); });

任何帮助。

编辑:这里我添加了systemjs.config.js:

(function (global) {
  System.config({
    paths: {
      // paths serve as alias
      'npm:': 'node_modules/'
    },
    // map tells the System loader where to look for things
    map: {
      // our app is within the app folder
      app: 'app',
      // angular bundles
      '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
      '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
      '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
      '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
      '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
      '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
      '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
      '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
      // other libraries
      'rxjs':                       'npm:rxjs',
      'angular2-in-memory-web-api': 'npm:angular2-in-memory-web-api',
    },
    // packages tells the System loader how to load when no filename and/or no extension
    packages: {
      app: {
        main: './main.js',
        defaultExtension: 'js'
      },
      rxjs: {
        defaultExtension: 'js'
      },
      'angular2-in-memory-web-api': {
        main: './index.js',
        defaultExtension: 'js'
      }
    }
  });
})(this);

Answer 1

您需要将应用映射更改为构建，如图所示，

map: {
      // our app is within the app folder
      app: 'built',            //<-----changed 'app' to 'built'...
      ...
      ...
}