找不到模塊'angular2 / angular2'

Question

我正在開發一個帶有angular2和gulp的節點應用程序。 我已經編寫了一個組件文件login.ts，如下所示：

import {Component, View} from 'angular2/angular2';
import {FormBuilder,  formDirectives } from 'angular2/forms';
@Component({
  selector: 'login',
  injectables: [FormBuilder]
})
@View({
  templateUrl: '/scripts/src/components/login/login.html',
  directives: [formDirectives]
})

export class login {

}

我的bootstrap.ts文件是：

import {bootstrap} from 'angular2/angular2';

import {login} from './components/login/login';

bootstrap(login);

但是當我編譯這些文件時，它會給我以下錯誤：

client\bootstrap.ts(1,25): error TS2307: Cannot find module 'angular2/angular2'.
client\components\login\login.ts(1,31): error TS2307: Cannot find module 'angular2/angular2
client\components\login\login.ts(2,45): error TS2307: Cannot find module 'angular2/forms'.

這是我的tsconfig.json：

{
    "compilerOptions": {
        "target": "es5",
        "module": "commonjs",
        "sourceMap": true,
        "watch": true,
        "removeComments": true,
        "moduleResolution": "node",
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true
    }
}

我已經安裝了angular2的輸入：

tsd install angular2 --save

請幫助修復錯誤。

Answer 1

@simon錯誤說是在進口中。 但對於進一步的進口，我發布了這個答案可能對其他人也有用。

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'

更新 -

@View現在不再是angular2，所以不需要導入

import {view} from 'angular2/core'

更新2

由於angular2在RC中，所以所有進口都有重大變化，如果所有更新的進口都是列表 -

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 2

它在測試之前就改變了模塊

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

僅供參考：bootstrap也改為

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

因此，網上的很多博客文章都已過時:-(

Answer 3

根據Angular2 rc1的新版本，您可以將package.json更新為

"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",
    .....
 }

除此之外，還可以在組件或容器中導入以下內容：

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

Answer 4

請注意，作為Angular2最終版本的形式，正確答案是這樣的。

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

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

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

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

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

如上面的yups update 2中所述，這是正確的

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

您正在嘗試從node_modules的錯誤/舊目錄訪問Component。 請從中訪問組件

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

而不是： import { Component, View } from 'angular2/angular2';

和

從波紋管路徑訪問bootstrap：

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

Answer 6

你必須在最終版本中更新Angular2版本 -

然后使用像----

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

有一個像'@angular/core'這樣的更新庫

Answer 7

從''angular2 / angular2'導入的是之前的版本，現在不再支持了。現在我們必須從'angular2 / core'導入相同的內容。有關詳細參考用途（ https://angular.io/guide/quickstart ）

Answer 8

'angular2 / angular2'不是angular2的有效依賴項

你必須首先檢查package.json文件“@ angular / core”是否存在

"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",
    .....
 }

看到像這樣的組件文件，你也使用formGroup作為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]
        });
    }

而不是必須在app.module.ts文件中導入ReactiveFormsModule
從'@ angular / forms'導入{ReactiveFormsModule};

沒有ReactiveFormsModule formGroup不起作用會產生錯誤

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 9

啟動angular2項目的最佳方法是使用Angular CLI 。

Angular CLI可以輕松創建已經可以正常工作的應用程序。 它已經遵循我們的最佳實踐！

請查看此更多詳細信息。

Answer 10

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

@Component({
  selector: "userForm",
  template: '<div><input type="text" name="name" [disabled]="flag"/></div>'
});

export class userForm{
 public flag = false; //boolean value: true/false
}

Answer 11

• 首先在packege.json更新angular2 liberies。

• 第二

    import {Component} from "@angular/core"; import {FormBuilder } from "@angular/forms"; @Component({ selector: "login", providers: [FormBuilder], templateUrl: "/scripts/src/components/login/login.html" }) export class login { }