npm start error

[liujunlingx]

win10
npm 3.8.9
node v6.2.0
我切换分支后，再npm start报错，要怎么解决？

sanzhs@DESKTOP-TB810EH MINGW32 /e/RxJS/learning-rxjs (master)
$ git checkout seed
Branch seed set up to track remote branch seed from origin.
Switched to a new branch 'seed'

sanzhs@DESKTOP-TB810EH MINGW32 /e/RxJS/learning-rxjs (seed)
$ npm start

rxjs-todomvc@0.1.0 start E:\RxJS\learning-rxjs
webpack-dev-server --inline --colors --progress --display-error-details --display-cached --port 3000 --content-base src

'webpack-dev-server' ▒▒▒▒▒ڲ▒▒▒▒ⲿ▒▒▒Ҳ▒▒▒ǿ▒▒▒▒еij▒▒▒
▒▒▒▒▒▒▒▒▒ļ▒▒▒

npm ERR! Windows_NT 10.0.10240
npm ERR! argv "E:\nodejs\node.exe" "E:\nodejs\node_modules\npm\bin\npm-cli.js" "start"
npm ERR! node v6.2.0
npm ERR! npm v3.8.9
npm ERR! code ELIFECYCLE
npm ERR! rxjs-todomvc@0.1.0 start: webpack-dev-server --inline --colors --progress --display-error-details --display-cached --port 3000 --content-base src
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the rxjs-todomvc@0.1.0 start script 'webpack-dev-server --inline --colors --progress --display-error-details --display-cached --port 3000 --content-base src'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the rxjs-todomvc package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! webpack-dev-server --inline --colors --progress --display-error-details --display-cached --port 3000 --content-base src
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs rxjs-todomvc
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls rxjs-todomvc
npm ERR! There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?

npm ERR! Please include the following file with any support request:
npm ERR! E:\RxJS\learning-rxjs\npm-debug.log

sanzhs@DESKTOP-TB810EH MINGW32 /e/RxJS/learning-rxjs (seed)

================
还有个小白问题，刚接触TypeScript和RxJS，不是很熟悉。
按官网的npm install rxjs-es安装后，自己编了hello.ts文件,内容如下：
import Rx from 'rxjs/Rx';

Rx.Observable.of(1,2,3)
.map(x => console.log(x));

tsc hello.ts编译之后生成hello.js，放在html的<script>里测试显示找不到这个依赖

Uncaught ReferenceError: require is not defined
at greeter.js:2

这个要怎么解决，是要在特定目录下写ts文件吗？

[Brooooooklyn]

第一个问题：在切换到 seed 分支后尝试先执行 npm install 后再执行 npm start

第二个问题: TypeScript 默认将代码编译成 commonjs 的引用格式，这是 nodejs 下使用的一种模块引用模式。 如果你想在浏览器内直接使用这种引用模式需要使用 webpack 或者 browserify 将文件打包成一份，或者使用 requirejs 或 systemjs 等模块加载器在浏览器加载这些模块。