是否有一个与node_modules文件夹等效的纱线？
我有一个新的MERN项目文件夹。它有一个package.json文件。 package.json文件包含babel的依赖项和dev依赖项（下面的完整列表）：
"dependencies": {
"axios": "^0.16.1",
"babel-cli": "^6.24.1",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"babel-polyfill": "^6.13.0",
"body-parser": "^1.17.1",
"caniuse-api": "^2.0.0",
"express": "^4.13.4",
"lodash": "^4.17.4",
"material-ui": "^0.18.0",
"nodemon": "^1.11.0",
"react": "^15.5.4",
"react-dom": "^15.5.4",
"react-promise": "^1.1.2",
"react-redux": "^5.0.4",
"react-router": "^4.1.1",
"react-tap-event-plugin": "^2.0.1",
"redux": "^3.6.0",
"redux-devtools": "^3.4.0",
"redux-form": "^6.7.0",
"redux-thunk": "^2.2.0",
"socket.io": "^2.0.1",
"source-map-support": "^0.4.15"
},
"devDependencies": {
"babel": "^6.23.0",
"babel-core": "^6.24.1",
"babel-loader": "^7.0.0",
"babelify": "^7.3.0",
"enzyme": "^2.8.2",
"mocha": "^3.3.0",
"react-addons-test-utils": "^15.5.1",
"webpack": "^2.5.1"
}
我正在尝试使用import语句而不是require语句。我认为这应该有效，因为我有babel依赖，但是当我尝试运行npm start时，我收到一条错误消息：
/server.js:2
import bodyParser from 'body-parser';
^^^^^^
SyntaxError: Unexpected token import
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:390:7)
at startup (bootstrap_node.js:150:9)
[nodemon] app crashed - waiting for file changes before starting...
如果使用纱线，尝试使用npm start会有什么问题吗？我是否应该尝试找到一个等效的命令行启动语句，因为我使用的是纱线而不是npm？
我安装了npm。我不明白为什么我没有节点模块文件夹？