Question

应用程序工作正常，直到我尝试添加＆＃39; ngx-bootstrap＆＃39;，以下是错误。

(index):20 Error: (SystemJS) XHR error (404 Not Found) loading http://localhost:3000/traceur
    Error: XHR error (404 Not Found) loading http://localhost:3000/traceur
        at XMLHttpRequest.wrapFn [as __zone_symbol___onreadystatechange] (http://localhost:3000/node_modules/zone.js/dist/zone.js:1056:39)
        at ZoneDelegate.invokeTask (http://localhost:3000/node_modules/zone.js/dist/zone.js:424:31)
        at Zone.runTask (http://localhost:3000/node_modules/zone.js/dist/zone.js:191:47)
        at XMLHttpRequest.ZoneTask.invoke (http://localhost:3000/node_modules/zone.js/dist/zone.js:486:38)
    Error loading http://localhost:3000/traceur
    Unable to load transpiler to transpile http://localhost:3000/node_modules/ngx-bootstrap/ng2-bootstrap.js
    Error loading http://localhost:3000/node_modules/ngx-bootstrap/ng2-bootstrap.js as "ngx-bootstrap" from http://localhost:3000/app/app.module.js
        at XMLHttpRequest.wrapFn [as __zone_symbol___onreadystatechange] (http://localhost:3000/node_modules/zone.js/dist/zone.js:1056:39)
        at ZoneDelegate.invokeTask (http://localhost:3000/node_modules/zone.js/dist/zone.js:424:31)
        at Zone.runTask (http://localhost:3000/node_modules/zone.js/dist/zone.js:191:47)
        at XMLHttpRequest.ZoneTask.invoke (http://localhost:3000/node_modules/zone.js/dist/zone.js:486:38)
    Error loading http://localhost:3000/traceur
    Unable to load transpiler to transpile http://localhost:3000/node_modules/ngx-bootstrap/ng2-bootstrap.js
    Error loading http://localhost:3000/node_modules/ngx-bootstrap/ng2-bootstrap.js as "ngx-bootstrap" from http://localhost:3000/app/app.module.js

尝试过如此多的解决方案： - 更新systemjs.config.js - 检查打字稿评论（/ **） - 导入.TS

的umd文件

但他们都没有能够解决错误，有人能解释我做错了什么吗？有任何建议被挪用......

app.component.ts

import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  template: `
    <pre class="card card-block card-header">Model: {{selected | json}}</pre>
    <input [(ngModel)]="selected"
           [typeahead]="states"
           class="form-control">
  `,
})
export class AppComponent  { 
    public selected: string;
    public states: string[] = ['Alabama', 'Alaska', 'Arizona', 'Arkansas',
        'California', 'Colorado',
        'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Hawaii', 'Idaho',
        'Illinois', 'Indiana', 'Iowa',
        'Kansas', 'Kentucky', 'Louisiana', 'Maine', 'Maryland', 'Massachusetts',
        'Michigan', 'Minnesota',
        'Mississippi', 'Missouri', 'Montana', 'Nebraska', 'Nevada', 'New Hampshire',
        'New Jersey', 'New Mexico',
        'New York', 'North Dakota', 'North Carolina', 'Ohio', 'Oklahoma', 'Oregon',
        'Pennsylvania', 'Rhode Island',
        'South Carolina', 'South Dakota', 'Tennessee', 'Texas', 'Utah', 'Vermont',
        'Virginia', 'Washington',
        'West Virginia', 'Wisconsin', 'Wyoming'];
}

app.module.ts

    import { NgModule }      from '@angular/core';
    import { BrowserModule } from '@angular/platform-browser';
    import { FormsModule } from '@angular/forms';

    import { AppComponent }  from './app.component';
    import { UserComponent }  from './components/user.component';



    import { TypeaheadModule } from 'ngx-bootstrap';


    @NgModule({
      imports:      [ BrowserModule, FormsModule, TypeaheadModule.forRoot()],
      declarations: [ AppComponent, UserComponent ],
      bootstrap:    [ AppComponent ]
    })
    export class AppModule { }

systemjs.confing.js

    /**
 * System configuration for Angular 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',


      'ngx-bootstrap': 'npm:ngx-bootstrap'    

    },
    // packages tells the System loader how to load when no filename and/or no extension
    packages: {
        app: {
            defaultExtension: 'js',
            meta: {
                './*.js': {
                    loader: 'systemjs-angular-loader.js'
                }
            }
        },
        rxjs: {
            defaultExtension: 'js'
        }
        'ngx-bootstrap': {
            main: 'ng2-bootstrap.js',
            defaultExtension: 'js'
        }
    }
  });
})(this);

Answer 1

尝试将ngx-bootstrap main更改为bundles/ngx-bootstrap.umd.js而不是ng2-bootstrap.js。因此，在packages中，您的条目将如下所示：

  'ngx-bootstrap': {
    main: 'bundles/ngx-bootstrap.umd.js',
    defaultExtension: 'js'
  },

有关详情，请参阅https://github.com/angular/angular/issues/11358。

为什么＆＃39; traceur 404（未找到）＆＃39;仅在添加ngx-bootstrap时？

1 个答案: