如何使用 systemjs 在 Angular 2 中使用 require()？

Question

我正在尝试使用我的组件中的模板的相对路径来使用 systemjs。 （我之所以要使用相对路径，是因为 ng-xi18n 目前无法处理绝对路径。）我不想用这个

moduleId: __moduleName

方法，而是类似：

templateUrl: require('../templates/app.html')

首先 tsc 标记了一个错误，要求未定义并且 经过一番研究，我发现有人可以包含 @types/node 的依赖项以使用 require 函数。

现在我这样做了，tsc 编译没有错误，但是如果我在浏览器中打开应用程序，它会显示错误：

__zone_symbol__error : Error: (SystemJS) require is not a function TypeError: require is not a function at execute

由于我找不到解决方案，我希望有人可以帮助疯狂的 angular2 新手解决这个问题。

提前致谢！！

这是我的应用程序中的一些代码 sn-ps。

package.json:

{
  "name": "test",
  "version": "0.0.1",
  "scripts": {
    "start": "concurrently \"npm run tsc:w\" \"gulp serve\" ",
    "tsc": "tsc",
    "tsc:w": "tsc -w",
    "typings": "typings",
    "postinstall": "typings install",
    "i18n": "ng-xi18n -p ./tsconfig.json"
  },
  "dependencies": {
    "@angular/common": "~2.4.6",
    "@angular/compiler": "~2.4.6",
    "@angular/compiler-cli": "^2.4.6",
    "@angular/core": "~2.4.6",
    "@angular/forms": "~2.4.6",
    "@angular/http": "~2.4.6",
    "@angular/platform-browser": "~2.4.6",
    "@angular/platform-browser-dynamic": "~2.4.6",
    "@angular/platform-server": "^2.4.6",
    "@angular/router": "~3.4.6",
    "angular-in-memory-web-api": "~0.2.4",
    "core-js": "^2.4.1",
    "es6-shim": "^0.35.1",
    "rxjs": "5.0.1",
    "systemjs": "0.19.41",
    "zone.js": "^0.7.4"
  },
  "devDependencies": {
    "concurrently": "^3.1.0",
    "lite-server": "^2.2.2",
    "typescript": "^2.0.10",
    "typings": "^1.2.0",
    "gulp": "3.9.1",
    "gulp-connect": "3.2.1",
    "http-proxy-middleware": "0.13.0",
    "@types/node": "^7.0.0"
  }
}

tsconfig.json：

{
  "compilerOptions": {
    "target": "es5",
    "module": "system",
    "moduleResolution": "node",
    "outDir": "app/js",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": false,
    "types": ["node"]
  },
  "exclude": [
    "node_modules",
    "typings/main",
    "typings/main.d.ts"
  ]
}

systemjs.config.js：

(function (global) {
    System.config({
        defaultJSExtension: true,
        paths: {
            'npm:': 'node_modules/'
        },
        map: {
            app: 'app',

            '@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',

            'rxjs': 'npm:rxjs',
            'angular-in-memory-web-api':'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js'
        },

        packages: {
            app: {
                main: './main.js',
                defaultExtension: 'js'
            },
            rxjs: {
                defaultExtension: 'js'
            }
        }
    });
})(this);

app.component.ts：

import {Component} from '@angular/core';
import { LoginService } from '../services/login.service';
import { UserStatus } from '../models/userStatus';
import {SessionService} from "../services/session.service";
import {UserService} from "../services/user.service";
import {Router} from '@angular/router';

@Component({
    selector: 'main-app',
    template: require('../templates/app.html')

})

export class AppComponent {

}

Answer 1

According to the SystemJS author:

require 语句未定义为在 SystemJS 中的 ES 模块、全局变量或 System.register 中工作，因为这是专门针对 CommonJS 模块格式的。

相反，您可以使用 SystemJS text plugin 以 ES6 样式导入任何文本文件。所以组件看起来像这样：

import { Component } from '@angular/core';
import template from '../templates/app.html!text';

@Component({
    selector: 'main-app',
    template: template
})
export class AppComponent {}