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

Question

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奋斗,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'
   }
 };

(全部根据https://github.com/angular/angular-cli/wiki/3rd-party-libs中的规范 )注 - 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:根据下面的评论更多信息

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

有了稳定版本和当前的角度cli(1.0.0-beta.15),它只是添加了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:

将库angular-cli.json添加"../node_modules/lodash/lodash.js"到全局脚本的列表中(添加到列表中apps[0].scripts).

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

Answer 2

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

只需添加适当的条目即可package.json使用:

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.

在我的情况下,实际添加scripts条目导致问题.

Answer 3

[ 更新答案 ] 新版本之后angular-cli (1.0.0-beta.15):

加上

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(添加"../node_modules/lodash/lodash.js"到列表中apps[0].scripts).

并在您想要使用的组件中,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>

并在您想要使用的组件中,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