我正在关注Angular2的快速入门指南。我已经能够使用'tsc'命令将我的打字稿文件成功编译为js。 但是，当我使用'tsc -w'命令启动观察者时，观察者不会检测到任何文件更改。 在控制台中我经常看到这一行：
11:56:25 PM - 编译完成。注意文件更改。
没有任何错误或警告信息。
我正在使用基于mac os的vagrant（scotchbox）：Ubuntu 14.04.3 LTS（GNU / Linux 3.13.0-55-generic x86_64）
Nodejs版本：v6.2.1
Npm版本：3.9.3
任何人都可以帮助我吗？
这是我的package.json的内容：
{
"name": "angular",
"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-rc.2",
"@angular/compiler": "2.0.0-rc.2",
"@angular/core": "2.0.0-rc.2",
"@angular/http": "2.0.0-rc.2",
"@angular/platform-browser": "2.0.0-rc.2",
"@angular/platform-browser-dynamic": "2.0.0-rc.2",
"@angular/router": "2.0.0-rc.2",
"@angular/router-deprecated": "2.0.0-rc.2",
"@angular/upgrade": "2.0.0-rc.2",
"systemjs": "0.19.27",
"core-js": "^2.4.0",
"reflect-metadata": "^0.1.3",
"rxjs": "5.0.0-beta.6",
"zone.js": "^0.6.12",
"angular2-in-memory-web-api": "0.0.12",
"bootstrap": "^3.3.6"
},
"devDependencies": {
"concurrently": "^2.0.0",
"lite-server": "^2.2.0",
"typescript": "^1.8.10",
"typings":"^1.0.4"
}
}