如何从npm定义一个自定义角度模块？

Question

我创建了一个npm模块并成功发布。 现在我试图弄清楚如何将它包含到我的应用程序中。 我正在使用webpack进行编译，似乎无法正确完成。 这是一个角度通用设置。

对角通用回购是：

https://github.com/angular/universal-starter/tree/master/custom-webpack

下面是该模块的混帐回购协议：在app.module.ts我做 https://github.com/ChrisTarasovs/angular2-ui-kit

在我的项目

import { BoxModule } from 'ng-universal-ui-kit'; 

@NgModule({ 
    imports: [BoxModule ], 
    declarations: [ AppComponent, HomeView ], 
    exports: [ AppComponent ] 
}) 
export class AppModule {} 

我得到的错误是：

Error: Cannot find module 'ng-universal-ui-kit' 
    at Function.Module._resolveFilename (module.js:469:15) 
    at Function.Module._load (module.js:417:25) 
    at Module.require (module.js:497:17) 
    at require (internal/module.js:20:19) 
    at Object.defineProperty.value (/Users/christarasovs/Desktop/Projects/ng2-uni-webpack/custom-webpack/dist/server.js:72955:18) 
    at __webpack_require__ (/Users/christarasovs/Desktop/Projects/ng2-uni-webpack/custom-webpack/dist/server.js:26:30) 
    at Object.<anonymous> (/Users/christarasovs/Desktop/Projects/ng2-uni-webpack/custom-webpack/dist/server.js:72874:78) 
    at __webpack_require__ (/Users/christarasovs/Desktop/Projects/ng2-uni-webpack/custom-webpack/dist/server.js:26:30) 
    at Object.<anonymous> (/Users/christarasovs/Desktop/Projects/ng2-uni-webpack/custom-webpack/dist/server.js:69632:70) 
    at __webpack_require__ (/Users/christarasovs/Desktop/Projects/ng2-uni-webpack/custom-webpack/dist/server.js:26:30) 
[nodemon] app crashed - waiting for file changes before starting... 

我的package.json文件是：

{ 
    "name": "ng-universal-demo", 
    "version": "4.0.0", 
    "main": "dist/server.js", 
    "repository": { 
    "type": "git", 
    "url": "https://github.com/angular/universal-starter.git" 
    }, 
    "contributors": [ 
    "AngularClass <hello@angularclass.com>", 
    "PatrickJS <patrick@angularclass.com>", 
    "Jeff Whelpley <jeff@gethuman.com>", 
    "Jeff Cross <crossj@google.com>", 
    "Mark Pieszak <mpieszak84@gmail.com>", 
    "Jason Jean <jasonjean1993@gmail.com>" 
    ], 
    "scripts": { 
    "start": "npm run build && npm run server", 
    "build": "webpack", 
    "build:aot": "webpack --env.aot --env.client & webpack --env.aot --env.server", 
    "build:prod": "webpack --env.aot --env.client -p & webpack --env.aot --env.server", 
    "prebuild": "npm run clean", 
    "prebuild:aot": "npm run clean", 
    "prebuild:prod": "npm run clean", 
    "clean": "rimraf dist", 
    "server": "nodemon dist/server.js", 
    "watch": "webpack --watch" 
    }, 
    "engines": { 
    "node": ">=6.0.0" 
    }, 
    "license": "MIT", 
    "dependencies": { 
    "@angular/animations": "^4.0.0", 
    "@angular/common": "^4.0.0", 
    "@angular/compiler": "^4.0.0", 
    "@angular/core": "^4.0.0", 
    "@angular/http": "^4.0.0", 
    "@angular/platform-browser": "^4.0.0", 
    "@angular/platform-browser-dynamic": "^4.0.0", 
    "@angular/platform-server": "^4.0.0", 
    "@angular/router": "^4.0.0", 
    "@nguniversal/express-engine": "^1.0.0-beta.2", 
    "express": "^4.15.2", 
    "ng-universal-ui-kit": "^1.1.0", 
    "rxjs": "^5.4.0", 
    "serialize-javascript": "^1.3.0", 
    "xhr2": "^0.1.4", 
    "zone.js": "^0.8.10" 
    }, 
    "devDependencies": { 
    "@angular/compiler-cli": "^4.0.0", 
    "@ngtools/webpack": "^1.3.1", 
    "@types/express": "^4.0.35", 
    "@types/node": "^7.0.18", 
    "html-webpack-plugin": "^2.28.0", 
    "nodemon": "^1.11.0", 
    "raw-loader": "^0.5.1", 
    "rimraf": "^2.6.1", 
    "script-ext-html-webpack-plugin": "^1.7.1", 
    "typescript": "^2.3.2", 
    "webpack": "3.3.0", 
    "webpack-merge": "^4.1.0", 
    "webpack-node-externals": "^1.6.0" 
    } 
} 

我的应用组件是：

import { Component, OnInit } from '@angular/core'; 
import { TransferState } from '../modules/transfer-state/transfer-state'; 
import { REQUEST } from '@nguniversal/express-engine/tokens'; 

@Component({ 
    selector: 'demo-app', 
    template: ` 
    <Box>Lovely Wuhuu</Box> 
    <h1>Universal Demo using Angular</h1> 
    <a routerLink="/">Home</a> 
    <a routerLink="/lazy">Lazy</a> 
    <router-outlet></router-outlet> 
    `, 
    styles: [ 
    `h1 { 
     color: green; 
    }` 
    ] 
}) 
export class AppComponent implements OnInit { 
    constructor(private cache: TransferState) { } 

    ngOnInit() { 
    // This is an example 
    this.cache.set('message', 'Hello World'); 
    } 
} 

Answer 1

你不应该在AppModule中声明它。您发布到npm的模块应该有Box，列于BoxModule的exports中。

然后，当您导入BoxModule时，就像您一样，您可以使用此组件。

虽然这几乎是错误信息所指出的;所以不确定是否/为什么你还没有尝试过。