Node.js应用程序SyntaxError:意外的保留字'class'

Question

我是Node.js的新手,刚开始使用Eclipse和Nodeclipse插件构建应用程序.当我使用Node core.js运行应用程序时它工作正常,但使用Eclipse它会显示以下错误:

/home/sarojs/projects/Core/security.js:3
  class Security {
  ^^^^^
SyntaxError: Unexpected reserved word
at exports.runInThisContext (vm.js:73:16)
at Module._compile (module.js:443:25)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/home/sarojs/projects/node/liveprojects/ecurvInc/Core/core.js:12:16)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)

我无法弄清楚这里有什么问题.我搜索了解决方案并发现了一些资源意外的保留字,但我不明白如何将它合并到Eclipse中.

我的package.json看起来像这样:

{
 "dependencies": {
 "bluebird": "^3.4.0",
 "body-parser": "~1.8.1",
 "cookie-parser": "~1.3.3",
 "cors": "^2.8.1",
 "debug": "~2.0.0",
 "express": "~4.9.0",
 "express-handlebars": "^3.0.0",
 "express-session": "^1.13.0",
 "mysql": "^2.11.1",
 "passport": "^0.3.2",
 "passport-local": "^1.0.0"
 }
}

• Node.js版本:4.4.6
• IDE:带有Nodeclipse插件的Eclipse Mars 1

任何帮助将受到高度赞赏.

Answer 1

该class声明是一个 ES6 特性。节点 4.4.6几乎不支持ES6 功能。尝试更新并npm install再次运行

另请参阅https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/class