Angular2 - Angular-CLI安装lodash - 找不到模块

时间：2016-06-08 20:51:13

标签： angularjs lodash systemjs npm-install angular-cli

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

我尝试根据angular-cli wiki安装第三方npm模块：https://github.com/angular/angular-cli/wiki/3rd-party-libs但是失败了。我几天来一直在努力解决这个问题，非常感谢任何帮助。

获取错误的步骤：

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中正确添加）

系统config.ts：

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

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

（所有根据规格 https://github.com/angular/angular-cli/wiki/3rd-party-libs） 注意 - 我已经尝试了我能想到的所有配置设置，都给出了相同的结果。

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)

编辑：根据以下评论提供更多信息

DIST / index.html中：

<!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>

5 个答案:

答案 0 :(得分：26)

使用稳定版本和当前angular-cli（1.0.0-beta.15），它只需添加npm包加上类型定义

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

对于早期版本，例如1.0.0-beta.15 ，下一个版本是必要的。当前版本不应该要求它：

将库添加到angular-cli.json全局脚本列表中（将"../node_modules/lodash/lodash.js"添加到列表apps[0].scripts）。

请参阅https://github.com/angular/angular-cli#global-library-installation

答案 1 :(得分：10)

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

只需使用以下内容将正确的条目添加到package.json 

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

然后，在您的TypeScript代码中，使用：

import * as _ from 'lodash';

代码运行得很好。

就我而言，实际添加scripts条目会导致问题。

答案 2 :(得分：5)

[更新回答] 新版angular-cli (1.0.0-beta.15): 后

只需添加

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

然后将库添加到angular-cli.json到全局脚本列表（将"../node_modules/lodash/lodash.js"添加到列表apps[0].scripts）。

并在您要使用的组件中，尝试这种方式

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>

并在您要使用的组件中，尝试这种方式

declare var _:any;

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

我马上尝试了，它对我有用

答案 3 :(得分：2)

In order to support 3rd party libraries in Angular CLI and System.js, you have to specify them manually on system.config.ts and angular-cli-build.js. I've answered it here with example for lodash and also other dependencies.

答案 4 :(得分：2)

截至4/15/2017，@ angular / cli 1.0.0：

您需要非常具体地了解您安装的版本，否则TypeScript绑定将提供各种类型的失败。我所做的是在package.json：

中更新我的devDependencies，如下所示 
"@types/lodash": "ts2.0"
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