System is not defined ошибка

I’m trying to create typescript server side (example code import mongoose from 'mongoose';) and I know I’m supposed to get systemjs initialized before, but I don’t know how to in a server side script.

tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "system",
    "moduleResolution": "node",
    "noImplicitAny": true,
    "removeComments": true,
    "preserveConstEnums": true,
    "sourceMap": true
  },
  "exclude": [
    "node_modules",
    "typings/main",
    "typings/main.d.ts"
  ]
}

asked Mar 27, 2016 at 6:44

If you want to use module ‘system’ at server side — you will have to install systemjs package and configure it:

import System = require('systemjs');

System.config({
  ...
});

System.import(...);

But in my opinion it would be better to target commonjs and run it ‘natively’ in node.js without any extra dependencies.

As a bonus — you can also run commonjs module in browser using systemjs as loader — it supports loading them out of the box.

[EDIT]

Note that node.js is build with commonjs as module standard. Therefore you can consume ‘system’ modules using SystemJS but only ‘inside’ your main program that must be in commonjs format to be able to run in nodejs.

answered Mar 27, 2016 at 7:45

AmidAmid

21.3k4 gold badges57 silver badges54 bronze badges

I fixed this by putting "module" : "commonjs" in the tsconfig.json. Commonjs is the historic node module system.

answered Jan 28, 2021 at 15:30

bbsimonbbbbsimonbb

26.6k15 gold badges76 silver badges106 bronze badges

Источник

I’m getting above error when trying to view the demo (http://htmlxprs.github.io/angular2-todo/).
Have tried multiple browsers. Also the latest version of Chrome.

Does anybody know what might be the problem here? It seems to me that systemjs is simply not included or loaded correctly. JS execution fails at the following line in index.html:

System.paths = {
‘angular2/‘:’/angular2/.js’,
‘rtts_assert/‘: ‘/rtts_assert/.js’,
‘services/‘ : ‘/services/.js’,
‘todoApp’: ‘TodoApp.es6’
};

Kind regards,
Timo de Vries

do gulp build:shim so that it builds a dist/es6-shim.js that the app requires.. without it I got the same error as you..

Also make sure that you have:

all the gulp dependencies installed (npm install)
then open the gulpfile.js and manually install the four dependencies listed i.e require(…)

in order to run gulp

I got the same error if I hosted the app in IIS as an IIS application, which means the leading slashes points to the root of the server, not the application. To fix this, I removed the leading slashes:

System.paths = {
          'angular2/*':'angular2/*.js',
          'rtts_assert/*': 'rtts_assert/*.js',
          'services/*' : 'services/*.js',
          'todoApp': 'TodoApp.es6'
      };

And I got a 404 on the TodoApp.es6, I had to add a MIME-entry in IIS for the .es6 extension

I am getting the similar error while trying to run a simple code where I am displaying a variable in html being changed in a javascript file:

var MainController = function($scope){
    $scope.message = "harsh";
};

and html as:

<!DOCTYPE html>
<html ng-app>

  <head>
    <script data-require="angular.js@*" data-semver="2.0.0-alpha.45" src="https://code.angularjs.org/2.0.0-alpha.45/angular2.js"></script>
    <script src="script.js"></script>
  </head>

  <body ng-controller="MainController">
    <h1>{{message}}</h1>
  </body>

</html>

The error on chrome console is as:

Uncaught ReferenceError: System is not defined(anonymous function) @ angular2.js:3098

which points to:

System.register("angular2/src/core/facade/lang", [], true, function(require, exports, module) {

I don’t understand the problem. Is it related to the angular2.js which is Angular lib file?

I had this error with Chrome but was able to run it in FireFox in Windows and on a Mac. Since the Quickstart project is dealing with libraries that are in their infancy I am okay with that — it is possible that FireFox is more lax or the project may stop working in a future version of FireFox. The project still shows a decent reflection of Angular2 which has not officially been released yet.

Can’t seem to get around this for my Internet Explorer 11 users.

I ran into the same problem. Adding

<script src="https://code.angularjs.org/tools/system.js"></script> solved it.

Still, in the html page, I already had the following reference:

<script src="node_modules/systemjs/dist/system.js"></script>

both references point to the same version of system.js, Both files start with

A big question for me is why <script src="node_modules/systemjs/dist/system.js"></script> does not work.

the problem still exist until the quickstart guide is fixed to beta10
using
<script src="https://code.angularjs.org/tools/system.js"></script>
instead of
<script src="node_modules/systemjs/dist/system.src.js"></script>
fix it for now

I have the same issueeven though I dont know where SystemJS is coming from?

I specify module: commonjs and not systemjs:

"compilerOptions": {
    "target": "ES5",
    "module": "commonjs",

@wardbell @Vexez I am using beta 12 and systemjs 0.19.25 and still run into the same problem. The error shows up (only in Chrome) thought it works just fine. I will use the temporal fix with code angular as for now. I do not think it is fixed in Angular Quickstart yet even though it uses beta 12

I was having the same problem. If you change to node_modules/systemjs/dist/system.js instead of system.src.js it works. It appears that file is the same as the one on the Angular server.

If this is true, the Quickstart Guide needs updated

@jdforsythe I just checked and the quickstart guide on www.angular.io seems to work.

node_modules/systemjs/dist/system.js exists alongside node_modules/systemjs/dist/system.src.js.

@filipesilva Yes, the two files exist in the node module. The problem is that using the system.src.js (which appears to be an un-minified version, but must have some kind of difference) causes the above mentioned errors in Chrome. I have not tested on any other browser. But the minified version system.js which is the same as the one on the Angular server does not throw the error.

I was testing this at home last night when I got the same error the folks had above. I tested by starting from scratch here at work and I’m not getting the error. I’m wondering if I’m using different versions of Chrome — at work I’m «up to date» on v50.0.2661.87 m. I’ll check tonight at home and see if I’m using a different version there.

In any case, this appears to be a problem not related to the Quickstart Guide or SystemJS, but more related to the browser.

@jdforsythe I can’t seem to reproduce this error. The steps I took were these:

git clone https://github.com/angular/quickstart.git
cd quickstart
npm install
npm start

In chrome, this is all I see in the console:

@dachibro I am using ng2-bootstrap. I used npm to install ng2-bootstrap and typings install ~dt moment —save —global for moment. Any idea why I still get this error?

Same issue I am experiencing. I just tried with installing node_modules again still same error appearing.
Uncaught ReferenceError: System is not defined
I am using angular 2.1.*

Источник

Answer by Aleena Duncan

Uncaught ReferenceError: System is not defined. ,

Outdated Answers: accepted answer is now unpinned on Stack Overflow

,Stack Overflow em Português,Making statements based on opinion; back them up with references or personal experience.

Try moving

<script src="node_modules/systemjs/dist/system.src.js"></script>

Answer by Cynthia Rich

I’m getting above error when trying to view the demo (http://htmlxprs.github.io/angular2-todo/).
Have tried multiple browsers. Also the latest version of Chrome.,I am getting the similar error while trying to run a simple code where I am displaying a variable in html being changed in a javascript file:,

Sorry, something went wrong.
,Still, in the html page, I already had the following reference:

System.paths = {
          'angular2/*':'angular2/*.js',
          'rtts_assert/*': 'rtts_assert/*.js',
          'services/*' : 'services/*.js',
          'todoApp': 'TodoApp.es6'
      };

Answer by Kole Houston

which points to some function in angular2js:,Uncaught ReferenceError: System is not defined(anonymous function) @ angular2.js:3098,I don’t understand the problem. Is it related to the angular2.js which I included from angularjs.org?,
The best website to find answers to your angularjs questions. Our website collects the most common questions and it give’s answers for developers to those questions.

I am new to angular so please help. I am getting an error while trying to run a simple code with angular with angular ng-controller tag where I am displaying a variable in html being defined in a javascript file as:

var MainController = function($scope){
$scope.message = "harsh";

which points to some function in angular2js:

System.register("angular2/src/core/facade/lang", [], true, function(require, exports, module) {

Answer by Reese Russo

angular2-настройка получения ошибки как » Uncaught ReferenceError: System is not defined`
,
$ Is not defined — Uncaught referenceerror
,
Protobuf: Uncaught reference error: exports is not defined
,
uncaught Reference error YUI is not defined console error

Я новичок в angular, так что, пожалуйста, помогите. Я получаю ошибку при попытке запустить простой код с тегом angular with angular ng-controller , где я отображаю переменную в html, определяемую в файле javascript как:

var MainController = function($scope){
$scope.message = "harsh";

что указывает на некоторую функцию в angular2js:

System.register("angular2/src/core/facade/lang", [], true, function(require, exports, module) {

Answer by Lukas Barrera

Uncaught ReferenceError: System is not defined. ,index.html 页面在屏幕上加载并显示加载。但是我没有看到我在 app.component.ts 的模板属性中定义的文本“我的第一个组件”。当我按 F12 打开开发人员工具时，我看到错误: ,关于angular — 未捕获的 ReferenceError : System is not defined — Angular2，我们在Stack Overflow上找到一个类似的问题：

https://stackoverflow.com/questions/37258185/

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

@Component({
    selector: 'pm-app',
    template: `
    <div>
        <h1>{{pageTitle}}</h1>
         <div> My First Component </div>
     </div>
     `

})

export class AppComponent {
    pageTitle: string = 'Hello World'; 
}

{
  "compilerOptions": {
    "target": "ES5",
    "module": "system",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "moduleResolution": "node",
    "removeComments": false,
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true
  },
  "exclude": [
    "node_modules"
  ]
}

<!DOCTYPE html>
<html>

<head>
    <title>Angular 2 Application</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <link href="app/app.component.css" rel="stylesheet" />

    <!-- 1. Load libraries -->
    <!-- IE required polyfills, in this exact order -->



    <script src="node_modules/es6-shim/es6-shim.min.js"></script>
    <script src="node_modules/zone.js/dist/zone.js"></script>
    <script src="node_modules/reflect-metadata/Reflect.js"></script>

    <script src="node_modules/rxjs/bundles/Rx.umd.js"></script>
    <script src="node_modules/@angular/core/core.umd.js"></script>
    <script src="node_modules/@angular/common/common.umd.js"></script>
    <script src="node_modules/@angular/compiler/compiler.umd.js"></script>
    <script src="node_modules/@angular/platform-browser/platform-browser.umd.js"></script>
    <script src="node_modules/@angular/platform-browser-dynamic/platform-browser-dynamic.umd.js"></script>

    <script src='app/app.component.js'></script>
    <script src='app/main.js'></script>
    <script src="node_modules/systemjs/dist/system.src.js"></script> 
    <!-- 2. Configure SystemJS -->
    <script>
        System.config({
        packages: {
          app: {
            format: 'register',
            defaultExtension: 'js'
          }
        }
      });
      System.import('app/main')
            .then(null, console.error.bind(console));
    </script>
</head>

<body>
   <pm-app>Loading..</pm-app>
</body>

</html>

import { bootstrap } from '@angular/platform-browser-dynamic';

// Our main component
import { AppComponent } from './app.component';

bootstrap(AppComponent);

尝试移动

<script src="node_modules/systemjs/dist/system.src.js"></script>

Answer by Lian Bender

I am trying to port an old angular app with angular-ui-router to angular 2 using https://github.com/ui-router/ng1-to-ng2 and on runtime I get the following error,Ever solve this? I am getting this a lot when attempting to import Ng2 or angular2 npm packages and use them.,I am guessing it is looking for SystemJS, but I don’t think Meteor is using SystemJS for their module system.

I am trying to port an old angular app with angular-ui-router to angular 2 using https://github.com/ui-router/ng1-to-ng2 and on runtime I get the following error

Uncaught ReferenceError: System is not defined

Answer by Carl Simmons

Node.js: Uncaught ReferenceError: URLSearchParams is not defined,Uncaught (in promise) ReferenceError: Nprogress is not defined at eval,[Tools] Uncaught ReferenceError: regeneratorRuntime is not defined,Uncaught ReferenceError: layer is not defined

angular2.js:2 Uncaught ReferenceError: System is not defined
    at angular2.js:2
(anonymous) @ angular2.js:2
http.js:2 Uncaught ReferenceError: System is not defined
    at http.js:2
(anonymous) @ http.js:2
model.html:14 Uncaught ReferenceError: angular is not defined
    at model.html:14
(anonymous) @ model.html:14

<script type="text/javascript" src="../js/angular2.js" ></script>
<script type="text/javascript" src="../js/http.js" ></script>

Источник

Angular 2 System is not defined.

You can Try to include the System JS file in your HTML header file and resolve this error.

Include SystemJS Script.

The Example for detail as given below.

index.html file

<!DOCTYPE html>

<html>

<head>

System.config({

paths: {

‘main.js’:‘main.js’

}

});

System.import(‘main.js’);

</script>

</head>

<body>

</body>

</html>

main.js file

import {Component, View, bootstrap} from ‘angular2/angular2’;

@Component({

selector: ‘app’,

bindings: [Service]

})

@View({

template: ‘{{greeting}} I am Anil!’

})

class App {

constructor(service: Service) {

this.greeting = service.greeting();

setTimeout(() => this.greeting = ‘Hi,’, 2000);

}

class Service {

greeting() {

return ‘Welcome you!’;

}

bootstrap(App);

The live demo example

Источник

If you want to use module ‘system’ at server side — you will have to install systemjs package and configure it:

import System = require('systemjs');

System.config({
  ...
});

System.import(...);

But in my opinion it would be better to target commonjs and run it ‘natively’ in node.js without any extra dependencies.

As a bonus — you can also run commonjs module in browser using systemjs as loader — it supports loading them out of the box.

[EDIT]

Answer by Aleena Duncan

Answer by Cynthia Rich

Answer by Kole Houston

Answer by Reese Russo

Answer by Lukas Barrera

Answer by Lian Bender

Answer by Carl Simmons

Tags:

Typescript

Systemjs

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