angular2基础环境搭建

搭建环境前提：node和npm要安装好了。

搭建环境步骤：http://www.runoob.com/angularjs2/angularjs2-typescript-setup.html

在搭建环境步骤里，要建立一个package.json文件，里面描述的是一些命令，还有我们angular2项目要引用的一些包。 而包的安装就用到了npm包管理器。

使用 npm install 就能够自动安装我们需要的一些包，不需要我们再一个一个的找包。

package.json包描述的讲解：http://www.52php.cn/article/p-aulmgesb-bbb.html

tsconfig.json配置文件讲解：https://zhongsp.gitbooks.io/typescript-handbook/content/doc/handbook/Compiler%20Options.html

package.json文件内容

{
  "name": "angular-quickstart","version": "1.0.0","scripts": {
    "start": "tsc && concurrently "npm run tsc:w" "npm run lite" ","lite": "lite-server","postinstall": "typings install","tsc": "tsc","tsc:w": "tsc -w","typings": "typings"
  },"license": "ISC","dependencies": {
    "@angular/common": "2.0.0","@angular/compiler": "2.0.0","@angular/core": "2.0.0","@angular/forms": "2.0.0","@angular/http": "2.0.0","@angular/platform-browser": "2.0.0","@angular/platform-browser-dynamic": "2.0.0","@angular/router": "3.0.0","@angular/upgrade": "2.0.0","core-js": "^2.4.1","reflect-metadata": "^0.1.3","rxjs": "5.0.0-beta.12","systemjs": "0.19.27","zone.js": "^0.6.23","angular2-in-memory-web-api": "0.0.20","bootstrap": "^3.3.6"
  },"devDependencies": {
    "concurrently": "^2.2.0","lite-server": "^2.2.2","typescript": "^2.0.2","typings":"^1.3.2"
  }
}

tsconfig.json文件内容

{
  "compilerOptions": {
    "target": "es5","module": "commonjs","moduleResolution": "node","sourceMap": false,"emitDecoratorMetadata": true,"experimentalDecorators": true,"removeComments": false,"noImplicitAny": false
  }
}

最后不得不吐槽一下环境的搭建：搭建个环境竟然要配置这么多东西，对于一个菜鸟来说，一来就要配置这么多东西。真是懵逼一个啊。出现问题除了卸载重装，删了重新下载就没别的办法了。所以很有必要对这些配置文件里的各个字段的意义去理解一下，最起码知道个大概。一点一点理解，终究会学会的。坚持，angular2

（编辑：李大同）

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