typescript Angular2：并发不被识别为内部或外部命令
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Angular2 : concurrent is not recognized as internal or external command
提问by blackHawk
While running server for angular2 using npm start is giving error that concurrent is not recognized as internal or external command, why is it happens these kind of error
虽然使用 npm start 为 angular2 运行服务器会给出错误，即并发不被识别为内部或外部命令，为什么会发生这种错误
here is package.json:
这是 package.json：
{
"name": "contactlistapp",
"version": "1.0.0",
"description": "The app",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"tsc": "./node_modules/.bin/tsc",
"tsc:w": "./node_modules/.bin/tsc -w",
"serve": "./node_modules/.bin/live-server --host=localhost --port=3000 .",
"start": "concurrent \"npm run tsc:w\" \"npm run serve\" "
},
"author": "Sarah",
"license": "ISC",
"dependencies": {
"express": "^4.13.3",
"angular2": "2.0.0-beta.0",
"systemjs": "0.19.6",
"es6-promise": "^3.0.2",
"es6-shim": "^0.33.3",
"reflect-metadata": "0.1.2",
"rxjs": "5.0.0-beta.0",
"zone.js": "0.5.10"
},
"devDependencies": {
"concurrently": "^1.0.0",
"lite-server": "^1.3.1",
"typescript": "^1.7.3"
}
}
structure of the project is there is node_module and typings folder there is app.ts file for server(empty only express is imported), and component.ts(and their .js), tsconfig.json
项目的结构是有 node_module 和typings 文件夹有服务器的 app.ts 文件（空只有 express 被导入），和 component.ts（和他们的 .js），tsconfig.json
回答by Langley
concurrent is not recognized as internal or external command
并发不被识别为内部或外部命令
Must likely you haven't ran npm installsince you added the "concurrently": "^1.0.0"dependency.
npm install自从添加"concurrently": "^1.0.0"依赖项以来，您很可能还没有运行过。
live-server is not recognized as external or internal command
live-server 不被识别为外部或内部命令
You are installing the lite-server:
您正在安装lite-server：
"lite-server": "^1.3.1"
"lite-server": "^1.3.1"
yet you are calling the live-server:
但您正在调用live-server：
"serve": "./node_modules/.bin/live-server --host=localhost --port=3000 ."
"serve": "./node_modules/.bin/live-server --host=localhost --port=3000 ."
call lite-serverinstead.
lite-server改为调用。
