typescript - 构建 : Cannot find name Promise - Visual Studio 2015 w/MVC6 and Angular 2

Question

首先:我检查了这些:

https://github.com/angular/angular/issues/7052

https://github.com/angular/angular/issues/4902

Typescript cannot find name 'Promise' despite using ECMAScript 6

how to use es6-promises with typescript?

Visual Studio Code: Cannot find name angular?

How to get rid of Angular2 / TypeScript errors on Cannot find map, Promise ... when targeting -es5

还有很多很多。现在已经敲了我的头 2 天了。

是的:

我在我的 boot.ts 文件(或 Bootstrap 文件)中引用了:

///<reference path="../node_modules/angular2/typings/browser.d.ts"/> 

现在，问题来了:我正在使用 Visual Studio 2015 W/Update 1 和一个 ASP.NET MVC 6 项目(Release Candidate 1)+ Typescript 1.8.1。

我使用本教程进行设置: http://www.mithunvp.com/angular-2-in-asp-net-5-typescript-visual-studio-2015/

我已经成功使用 Angular 2 一段时间了，但现在 THE SAME CODE (afaik) 无法编译。它会在 browser.d.ts 文件中给我“找不到名称:Promise”，位于 node_modules/angular2/platform:

tsconfig.json

 {
  "compilerOptions": {
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "module": "commonjs",
    "noEmitOnError": true,
    "noImplicitAny": false,
    "outDir": "../wwwroot/appScripts/",
    "removeComments": false,
    "sourceMap": true,
    "target": "es5"
  },
  "exclude": [
    "node_modules"
  ]
}

package.json

{
    "version": "1.0.0",
    "name": "asp.net", 
  "private": true,
  "dependencies": {
    "angular2": "2.0.0-beta.11",
    "systemjs": "0.19.24",
    "es6-promise": "^3.1.2",
    "es6-shim": "^0.35.0",
    "reflect-metadata": "0.1.2",
    "rxjs": "5.0.0-beta.2",
    "zone.js": "0.6.4"
  },
  "devDependencies": {
    "gulp": "^3.9.1"
  }
}

gulpfile.js

/*
This file in the main entry point for defining Gulp tasks and using Gulp plugins.
Click here to learn more. http://go.microsoft.com/fwlink/?LinkId=518007
*/

/// <binding AfterBuild='moveToLibs' />

var gulp = require('gulp');

gulp.task('default', function () {
    // place code for your default task here
});

gulp.task('moveToLibs', function () {
    gulp.src([
      'node_modules/angular2/bundles/js',
      'node_modules/angular2/bundles/angular2.*.js*',
      'node_modules/angular2/bundles/angular2-polyfills.js',
      'node_modules/angular2/bundles/http.*.js*',
      'node_modules/angular2/bundles/router.*.js*',
      'node_modules/es6-shim/es6-shim.min.js*',
      'node_modules/angular2/es6/dev/src/testing/shims_for_IE.js',
      'node_modules/systemjs/dist/*.*',
      'node_modules/jquery/dist/jquery.*js',
      'node_modules/bootstrap/dist/js/bootstrap*.js',
      'node_modules/rxjs/bundles/Rx.js'
    ]).pipe(gulp.dest('./wwwroot/libs/'));
});

我什至尝试过在 node_module/angular2/platform/browser.d.ts 文件中使用引用路径，但在非模块文件中使用引用路径会引发错误。

唯一有点用的东西(我没有完全实现它，因为它很疯狂):将代码复制并粘贴到所有询问它的文件中的 es6-promise.d.ts 文件中。

编辑嗅 嗅 这里有些东西闻起来很臭:我决定将 node_module 文件夹重命名为 _bak_node_module_folder 并重新安装所有包:

    Severity    Code    Description Project File    Line    Suppression State
Error   MSB4018 The "FindConfigFiles" task failed unexpectedly.
System.IO.PathTooLongException: The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
   at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
   at System.IO.Path.GetDirectoryName(String path)
   at System.IO.FileSystemEnumerableIterator`1..ctor(String path, String originalUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler`1 resultHandler, Boolean checkHost)
   at System.IO.Directory.EnumerateFiles(String path)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherFiles(String directoryPath, String projectPath, Func`2 filter)
   at TypeScript.Tasks.FileHelpers.RecursiveGatherConfigFiles(String directoryPath, String projectPath)
   at TypeScript.Tasks.FindConfigFiles.FindConfigFilesOnDisk()
   at TypeScript.Tasks.FindConfigFiles.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext() Angular2    C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v14.0\TypeScript\Microsoft.TypeScript.targets 153 

我真的很讨厌 Windows 的字符限制。如果这是问题所在，我想我会从我所在城市最高的桥上跳下去。

编辑 x2因此，我决定按照建议更新 Visual Studio 的 NPM，但没有成功。所以我决定获取 Nodejs 并从 cmd 运行它。不幸的是，问题仍然存在:

这是输出:

[0] node_modules/angular2/typings/browser.d.ts(6,14): error TS2300: Duplicate identifier 'PromiseConstructor'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(22,5): error TS2300: Duplicate identifier 'done'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(23,5): error TS2300: Duplicate identifier 'value'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(46,5): error TS2300: Duplicate identifier 'size'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(52,5): error TS2300: Duplicate identifier 'prototype'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(66,5): error TS2300: Duplicate identifier 'size'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(72,5): error TS2300: Duplicate identifier 'prototype'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(88,5): error TS2300: Duplicate identifier 'prototype'.
[0] node_modules/angular2/typings/es6-collections/es6-collections.d.ts(103,5): error TS2300: Duplicate identifier 'prototype'.
[0] node_modules/angular2/typings/es6-promise/es6-promise.d.ts(11,15): error TS2300: Duplicate identifier 'Promise'.
[0] node_modules/angular2/typings/es6-promise/es6-promise.d.ts(42,16): error TS2300: Duplicate identifier 'Promise'.
[0] typings/browser/ambient/es6-shim/index.d.ts(11,5): error TS2300: Duplicate identifier 'done'.
[0] typings/browser/ambient/es6-shim/index.d.ts(12,5): error TS2300: Duplicate identifier 'value'.
[0] typings/browser/ambient/es6-shim/index.d.ts(477,11): error TS2300: Duplicate identifier 'Promise'.
[0] typings/browser/ambient/es6-shim/index.d.ts(496,11): error TS2300: Duplicate identifier 'PromiseConstructor'.
[0] typings/browser/ambient/es6-shim/index.d.ts(554,13): error TS2300: Duplicate identifier 'Promise'.
[0] typings/browser/ambient/es6-shim/index.d.ts(563,5): error TS2300: Duplicate identifier 'size'.
[0] typings/browser/ambient/es6-shim/index.d.ts(572,5): error TS2300: Duplicate identifier 'prototype'.
[0] typings/browser/ambient/es6-shim/index.d.ts(583,5): error TS2300: Duplicate identifier 'size'.
[0] typings/browser/ambient/es6-shim/index.d.ts(592,5): error TS2300: Duplicate identifier 'prototype'.
[0] typings/browser/ambient/es6-shim/index.d.ts(607,5): error TS2300: Duplicate identifier 'prototype'.
[0] typings/browser/ambient/es6-shim/index.d.ts(621,5): error TS2300: Duplicate identifier 'prototype'.
[0] 2:47:31 PM - Compilation complete. Watching for file changes.

Answer 1

这样做的原因是您的目标是 ES5，它没有 Promises。如果您更改为 ES6，错误将神奇地消失。

如果您确实需要以 ES5 为目标，只需使用前面答案中提到的 es6-shim。