Cannot find module 'angular2/angular2'

Question

I am developing an node app with angular2 and gulp. I have written a component file login.ts as follows:

import {Component, View} from \'angular2/angular2\';         


        

Answer 1

As per the new release of Angular2 rc1, you can update your package.json to

"dependencies": {
    "@angular/common": "2.0.0-rc.1",
    "@angular/compiler": "2.0.0-rc.1",
    "@angular/core": "2.0.0-rc.1",
    "@angular/http": "2.0.0-rc.1",
    "@angular/platform-browser": "2.0.0-rc.1",
    "@angular/platform-browser-dynamic": "2.0.0-rc.1",
    "@angular/router": "2.0.0-rc.1",
    "@angular/router-deprecated": "2.0.0-rc.1",
    "@angular/upgrade": "2.0.0-rc.1",
    .....
 }

In addition to this also import as following in your component or container:

import { Component } from '@angular/core';
import {ROUTER_DIRECTIVES, Router, RouteParams} from '@angular/router-deprecated';

Answer 2

import from ''angular2/angular2' was in previous version which no longer supported now .So Now we have to import the same from 'angular2/core'.For detail reference use (https://angular.io/guide/quickstart)

Answer 3

'angular2/angular2' is not a valid dependencies of angular2

you have to first check package.json file "@angular/core" exist or not

"dependencies": {
    "@angular/common": "2.0.0",
    "@angular/compiler": "2.0.0",
    "@angular/core": "2.0.0",
    "@angular/http": "2.0.0",
    "@angular/platform-browser": "2.0.0",
    "@angular/platform-browser-dynamic": "2.0.0",
    "@angular/router": "2.0.0",
    "@angular/router-deprecated": "2.0.0",
    "@angular/upgrade": "2.0.0",
    .....
 }

see the component file like this and also you have too use formGroup as belove

    import { Component, OnInit, DoCheck } from '@angular/core'
    import { Router } from '@angular/router'

    import { FormBuilder, FormGroup, Validators, FormControl } from '@angular/forms'

    @Component({
      selector: 'app-user-profile',
      templateUrl: './user-profile.component.html',
      styleUrls: ['./user-profile.component.scss'],
    })
    export class UserProfileComponent implements OnInit, DoCheck {
      profileForm: FormGroup

      constructor(private fb: FormBuilder) {
        this.profileForm = this.fb.group({
          firstName: ['', Validators.required],
          lastName: ['', Validators.required],
          email: ['', Validators.required],
          mobileNo: ['', Validators.required]
        });
    }

than you have to import ReactiveFormsModule in app.module.ts file
import { ReactiveFormsModule } from '@angular/forms';

without ReactiveFormsModule formGroup not work it make error

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { UserProfileComponent } from './user-profile.component';

import { UserProfileRoutingModule } from './user-profile-routing.module';
import { ReactiveFormsModule } from '@angular/forms';

@NgModule({
  imports: [
    CommonModule,
    UserProfileRoutingModule,
    ReactiveFormsModule
  ],
  declarations: [UserProfileComponent]
})

Answer 4

yups as said by @simon error is in imports. but for further imports i have posted this answer may be this is useful for others too.

import {Component, View, Directive, Input, Output, Inject, Injectable, provide} from 'angular2/core'; 

import {bootstrap} from 'angular2/platform/browser';

import {CORE_DIRECTIVES, FORM_DIRECTIVES, NgClass, NgIf  NgForm, Control, ControlGroup, FormBuilder, Validators} from 'angular2/common';

import {RouteConfig, ROUTER_DIRECTIVES, ROUTER_PROVIDERS, Router, LocationStrategy, HashLocationStrategy} from 'angular2/router';

import {Http, HTTP_PROVIDERS, RequestOptions, Headers, Request, RequestMethod} from 'angular2/http'

update -

@View is no more in angular2 now, so no need to import

import {view} from 'angular2/core'

Update 2

As of angular2 is in RC so there is breaking change in all imports here is the list if all updated imports -

angular2/core -> @angular/core
angular2/compiler -> @angular/compiler
angular2/common -> @angular/common
angular2/platform/common -> @angular/common
angular2/common_dom -> @angular/common
angular2/platform/browser -> @angular/platform-browser-dynamic
angular2/platform/server -> @angular/platform-server
angular2/testing -> @angular/core/testing
angular2/upgrade -> @angular/upgrade
angular2/http -> @angular/http
angular2/router -> @angular/router
angular2/platform/testing/browser -> @angular/platform-browser-dynamic/testing

Answer 5

The best way to kick of angular2 project is using Angular CLI.

The Angular CLI makes it easy to create an application that already works, right out of the box. It already follows our best practices!

please check this for more details.