Encountering compilation errors with TypeScript files in Angular 2 while using Visual Studio 2017

Currently, I am in the process of developing an Angular 2 application

Here is a snippet of the TypeScript code that I have written:

import { Component } from 'angular2/core';
@Component({
    selector: 'my-app',
    template: ' < h1 > My First SharePoint Add In using Angular2... !!! < /h1>'
})
export class AppComponent { }

However, I am encountering the following errors:

cannot find module angular2/core

The experimental support for decorators may change in a future update

To address the second error, I have included the following line in my tsconfig.json file:

"experimentalDecorators": true,

In an attempt to resolve this issue, I have installed TypeScript SDK for Visual Studio 2017, restarted Visual Studio, but unfortunately, the problem persists

I have also tried running npm install -g typescript@latest

Below is an overview of my package.json file:

{
  "name": "imageslideshow",
  "version": "1.0.0",
  "description": "slide show for image libraries",
  "main": "index.js",
  "dependencies": {
    "@angular/core": "^4.3.2",
    "angular2": "^2.0.0-beta.17",
    "es6-promise": "^4.1.1",
    "es6-shim": "^0.35.3",
    "reflect-metadata": "^0.1.2",
    "rxjs": "^5.0.0-beta.6",
    "systemjs": "^0.20.17",
    "zone.js": "^0.8.16"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "vignesh",
  "license": "ISC"
}

Upon running npm install, I received the message displayed at https://i.stack.imgur.com/xTP8C.png

Answer №1

  1. Ensure that you have executed npm install in your project and have all the required dependencies stored in the node_modules directory.

  2. In your package.json file, make sure that you have dependencies for both Angular versions 2 and 4. You need to decide which version you want to utilize.

If you opt for Angular version 4, your import statement should be:

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

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