外部JavaScript库在'{module}/dist /'上返回404

Question

在Angular2中配置外部项目总是遇到一些麻烦.

我想在我的项目中包含ng2-sharebuttons.(似乎没有全局.d.ts文件？)

虽然README.md只是说npm install ng2-sharebuttons --save,我知道还有更多的东西(systemjs.config&typings)

首先,我尝试配置systemjs.config:

map{
     ......
     'ng2-sharebuttons' : 'node_modules/ng2-sharebuttons'
}

这至少固定在404上localhost/ng2-sharebuttons,但创造了一个新404的localhost/node_modules/ng2-sharebuttons.

所以,我添加了一个主文件,systemjs.config改为

map{
     ......
     'ng2-sharebuttons' : 'node_modules/ng2-sharebuttons/dist/index.js'
}

但现在这导致了404每个孩子ng2-sharebuttons/dist

我尝试过typings install ng2-sharebuttons --save --global,typings install @types/ng2-sharebuttons --save --global无论有没有--global旗帜.

所以在我最后的希望中,我添加了一个参考,看看是否可行.添加

/// <reference path="../../node_modules/ng2-sharebuttons/dist/index.d.ts" />

但这并没有改变任何事情.

我忘记了什么？为什么这么难？(或者我只是努力吗？)

结构和文件ng2-sharebuttons:

最后,Chrome目前正在生成错误消息:

整个 systemjs.config.js

/**
 * System configuration for Angular 2 samples
 * Adjust as necessary for your application needs.
 */
(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',
      'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
      'angularfire2' : 'npm:angularfire2/bundles/angularfire2.umd.js',
      'firebase' : 'npm:firebase',
      'ng2-bs3-modal': 'npm:ng2-bs3-modal',
      'ng2-sharebuttons' : 'npm:ng2-sharebuttons/dist/index.js',
      'ng2-social-share' : 'npm:ng2-social-share/bundles/ng2-social-share.js'
    },

    // 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'
      },
      firebase: {
        main: './firebase-browser.js',
        defaultExtension: 'js'
      }
    }
  });
})(this);

它抛出一个错误,GET .... 404但XHR finished loading: GET ....同样的组件/服务/文件,这似乎很奇怪.

Answer 1

你需要这样做

map:{
   'ng2-sharebuttons' : 'npm:ng2-sharebuttons/dist'
},

packages: {
   app: {main: './main.js', defaultExtension: 'js'},
   rxjs: {defaultExtension: 'js'},

   'ng2-sharebuttons': {main: 'index.js', defaultExtension: 'js'}
}