Angular2 - Angular-CLI安裝lodash - 找不到模塊

Question

Mac OSX El capitan | angular-cli：0.1.0 | 節點：5.4.0 | os：darwin x64

我嘗試根據angular-cli wiki安裝第三方npm模塊： https ： //github.com/angular/angular-cli/wiki/3rd-party-libs但是失敗了。 我幾天來一直在努力奮斗，非常感謝任何幫助。

獲取錯誤的步驟：

ng new lodashtest3 cd lodashtest3 npm install lodash --save typings install lodash --ambient --save

角-CLI-build.json：

module.exports = function(defaults) { return new Angular2App(defaults, { vendorNpmFiles: [ ... 'lodash/**/*.js' ] }); }; ng build （lodash在dist / vendor中正確添加）

系統config.ts：

/** Map relative paths to URLs. */
 const map: any = {
   'lodash': 'vendor/lodash/lodash.js'
 };

 /** User packages configuration. */
 const packages: any = {
   'lodash': {
     format: 'cjs'
   }
 };

（全部根據https://github.com/angular/angular-cli/wiki/3rd-party-libs中的規范）注 - 我已經嘗試了我能想到的所有配置設置，都給出了相同的結果。

lodashtest3.component.ts： import * as _ from 'lodash';

ng build

Could not start watchman; falling back to NodeWatcher for file system events.
Visit http://ember-cli.com/user-guide/#watchman for more info.
Build failed.
The Broccoli Plugin: [BroccoliTypeScriptCompiler] failed with:
Error: Typescript found the following errors:
  /Users/danielmattsson/git/lodashtest3/tmp/broccoli_type_script_compiler-input_base_path-g2lDIaq6.tmp/0/src/app/lodashtest3.component.ts (2, 20): Cannot find module 'lodash'.
    at BroccoliTypeScriptCompiler._doIncrementalBuild (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/lib/broccoli/broccoli-typescript.js:115:19)
    at BroccoliTypeScriptCompiler.build (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/lib/broccoli/broccoli-typescript.js:43:10)
    at /Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/broccoli-caching-writer/index.js:152:21
    at lib$rsvp$$internal$$tryCatch (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/broccoli-caching-writer/node_modules/rsvp/dist/rsvp.js:1036:16)
    at lib$rsvp$$internal$$invokeCallback (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/broccoli-caching-writer/node_modules/rsvp/dist/rsvp.js:1048:17)
    at lib$rsvp$$internal$$publish (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/broccoli-caching-writer/node_modules/rsvp/dist/rsvp.js:1019:11)
    at lib$rsvp$asap$$flush (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/broccoli-caching-writer/node_modules/rsvp/dist/rsvp.js:1198:9)
    at nextTickCallbackWith0Args (node.js:456:9)
    at process._tickCallback (node.js:385:13)

The broccoli plugin was instantiated at:
    at BroccoliTypeScriptCompiler.Plugin (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/broccoli-caching-writer/node_modules/broccoli-plugin/index.js:10:31)
    at BroccoliTypeScriptCompiler.CachingWriter [as constructor] (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/broccoli-caching-writer/index.js:21:10)
    at BroccoliTypeScriptCompiler (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/lib/broccoli/broccoli-typescript.js:26:49)
    at Angular2App._getTsTree (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/lib/broccoli/angular2-app.js:280:18)
    at Angular2App._buildTree (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/lib/broccoli/angular2-app.js:101:23)
    at new Angular2App (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/lib/broccoli/angular2-app.js:42:23)
    at module.exports (/Users/danielmattsson/git/lodashtest3/angular-cli-build.js:6:10)
    at Class.module.exports.Task.extend.setupBroccoliBuilder (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/lib/models/builder.js:55:19)
    at Class.module.exports.Task.extend.init (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/lib/models/builder.js:89:10)
    at new Class (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/node_modules/core-object/core-object.js:18:12)
    at Class.module.exports.Task.extend.run (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/lib/tasks/build.js:15:19)
    at /Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/lib/commands/build.js:32:24
    at lib$rsvp$$internal$$tryCatch (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/node_modules/rsvp/dist/rsvp.js:1036:16)
    at lib$rsvp$$internal$$invokeCallback (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/node_modules/rsvp/dist/rsvp.js:1048:17)
    at /Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/node_modules/rsvp/dist/rsvp.js:331:11
    at lib$rsvp$asap$$flush (/Users/danielmattsson/git/lodashtest3/node_modules/angular-cli/node_modules/angular-cli/node_modules/rsvp/dist/rsvp.js:1198:9)

編輯：根據下面的評論更多信息

DIST / index.html的：

<!doctype html>
<html>
<head>
  <meta charset="utf-8">
  <title>Lodashtest3</title>
  <base href="/">

  <link rel="icon" type="image/x-icon" href="favicon.ico">
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <!-- Service worker support is disabled by default.
       Install the worker script and uncomment to enable.
       Only enable service workers in production.
  <script type="text/javascript">
    if ('serviceWorker' in navigator) {
      navigator.serviceWorker.register('/worker.js').catch(function(err) {
        console.log('Error installing service worker: ', err);
      });
    }
  </script>
  -->
</head>
<body>
  <lodashtest3-app>Loading...</lodashtest3-app>

  <script src="vendor/es6-shim/es6-shim.js"></script>
  <script src="vendor/reflect-metadata/Reflect.js"></script>
  <script src="vendor/systemjs/dist/system.src.js"></script>
  <script src="vendor/zone.js/dist/zone.js"></script>

  <script>
    System.import('system-config.js').then(function () {
      System.import('main');
    }).catch(console.error.bind(console));
  </script>
</body>
</html>

Answer 1

有了穩定版本和當前的角度cli（1.0.0-beta.15），它只是添加了npm包加上類型定義

npm install lodash --save
npm install @types/lodash --save-dev

對於早期版本，例如1.0.0-beta.15 ，下一個版本是必要的。 當前版本不應該要求：

將庫添加到angular-cli.json到全局腳本列表（將"../node_modules/lodash/lodash.js"添加到列表apps[0].scripts ）。

請參閱https://github.com/angular/angular-cli#global-library-installation

Answer 2

FWIW，截至今天（ 1.0.0-beta.26 ），不再需要添加scripts條目了。

只需使用以下命令將適當的條目添加到package.json ：

npm i --save lodash
npm i --save-dev @types/lodash

然后，在您的TypeScript代碼中，使用：

import * as _ from 'lodash';

代碼運行得很好。

在我的情況下，實際添加scripts條目導致問題。

Answer 3

[ 更新的答案 ] 在新版本的angular-cli (1.0.0-beta.15):

加上

npm install lodash --save
npm install @types/lodash --save-dev

然后將庫添加到angular-cli.json到全局腳本列表（將"../node_modules/lodash/lodash.js"添加到列表apps[0].scripts ）。

並在您想要使用的組件中，嘗試這種方式

declare var _:any;

@Component({
})
export class YourComponent {
  ngOnInit() {
     console.log(_.chunk(['a', 'b', 'c', 'd'], 2));
  }
}

之前： angular-cli (1.0.0-beta.15):

在src / index.html中添加此行

  <script src="/vendor/lodash/lodash.js" type="text/javascript"></script>

並在您想要使用的組件中，嘗試這種方式

declare var _:any;

@Component({
})
export class YourComponent {
  ngOnInit() {
     console.log(_.chunk(['a', 'b', 'c', 'd'], 2));
  }
}

我馬上嘗試了，它對我有用

Answer 4

為了支持Angular CLI和System.js中的第三方庫，您必須在system.config.ts和angular-cli-build.js上手動指定它們。 我在這里用lodash和其他依賴項的例子回答了它。

Answer 5

截至4/15/2017 @ @ angular / cli 1.0.0：

您需要非常具體地了解您安裝的版本，否則TypeScript綁定將提供各種類型的失敗。 我所做的是在package.json更新我的devDependencies，如下所示：

"@types/lodash": "ts2.0"