typescript - 在 Visual Studio 2015 Update 1 中找不到模块 'angular2/core'

Question

在 Visual Studio 2015 Update 1 中试用 angular2 beta 版本时，我遇到了这个错误找不到模块 'angular2/core' .

代码如下:

import {Component} from "angular2/core"

@Component({
    selector: 'my-app',
    template: '<h1>My First Angular 2 App</h1>'
})
export class AppComponent {
}

我的 Visual Studio ASP.NET 5 项目中有 angular2 beta 版本。我在构建项目时还启用了编译 TS 文件。

一些我尝试过但没有奏效的事情:

1. 我添加了 /// <reference path="../node_modules/angular2/core.d.ts" />在 ts 文件的顶部。

2.

import {Component} from "angular2/bundles/angular2"

@Component({
    selector: 'my-app',
    template: '<h1>My First Angular 2 App</h1>'
})
export class AppComponent {
}

3.

import {Component} from "../node_modules/angular2/core"

@Component({
    selector: 'my-app',
    template: "<h1>My First Angular 2 App</h1>"
})
export class AppComponent {
}

更新:

这是我的 tsconfig.json

{
  "compilerOptions": {
    "noImplicitAny": false,
    "noEmitOnError": true,
    "removeComments": true,
    "sourceMap": true,
    "target": "es6",
    "module": "system",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  },
  "exclude": [
    "node_modules",
    "wwwroot",
    "bower_components"
  ]
}

更新:

我将 "moduleResolution": "node" 添加到 tsconfig.json 文件，但现在我得到了另一组错误:

1>------ Rebuild All started: Project: Terminal.Web, Configuration: Debug Any CPU ------ 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(6,14): error TS2300: Build: Duplicate identifier 'PropertyKey'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(9,5): error TS2300: Build: Duplicate identifier 'done'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(10,5): error TS2300: Build: Duplicate identifier 'value'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(248,5): error TS2300: Build: Duplicate identifier 'EPSILON'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(283,5): error TS2300: Build: Duplicate identifier 'MAX_SAFE_INTEGER'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(290,5): error TS2300: Build: Duplicate identifier 'MIN_SAFE_INTEGER'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(346,5): error TS2300: Build: Duplicate identifier 'flags'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(498,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(561,5): error TS2300: Build: Duplicate identifier 'size'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(570,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(581,5): error TS2300: Build: Duplicate identifier 'size'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(590,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(605,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Test\node_modules\angular2\typings\es6-shim\es6-shim.d.ts(619,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(3841,14): error TS2300: Build: Duplicate identifier 'PropertyKey'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4061,5): error TS2300: Build: Duplicate identifier 'EPSILON'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4096,5): error TS2300: Build: Duplicate identifier 'MAX_SAFE_INTEGER'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4103,5): error TS2300: Build: Duplicate identifier 'MIN_SAFE_INTEGER'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4389,5): error TS2300: Build: Duplicate identifier 'done'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4390,5): error TS2300: Build: Duplicate identifier 'value'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4619,5): error TS2300: Build: Duplicate identifier 'flags'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4647,5): error TS2300: Build: Duplicate identifier 'size'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4657,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4674,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4686,5): error TS2300: Build: Duplicate identifier 'size'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4696,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(4712,5): error TS2300: Build: Duplicate identifier 'prototype'. 1>C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.7\lib.es6.d.ts(5099,5): error TS2300: Build: Duplicate identifier 'prototype'. ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========

Answer 1

typescript 已经取得了长足的进步，此时 Visual Studio 2015 Update 3 随 typescript 2.0 版一起可用。

我发现 tsconfig.json 中的任何语法错误都可能导致同样的问题。我在 compilerOptions 的最后一个键的末尾有一个逗号，这导致 ts 文件无法正确找到模块。