webpack -v 报SyntaxError: Block-scoped declarations (let, const, function, class) not yet strict mode

环境版本:

node.js v4.4.7

npm 2.15.8 

安装步骤:

1.全局安装webpack 

npm install webpack -g

2.在项目中安装webpack依赖,防止部署是与本地的依赖包不一致导致错误 ,指定版本

npm install [email protected] --save-dev

 安装后查看webpack版本

webpack -v

报如下错误信息:

D:\workspace>webpack -v
C:\Users\XXX\AppData\Roaming\npm\node_modules\webpack\bin\webpack.js:89
        let notify =
        ^^^

SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:373:25)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Function.Module.runMain (module.js:441:10)
    at startup (node.js:139:18)
    at node.js:968:3

 经过查找资料后,可能是node的版本与webpack的版本不兼容  卸载webpack

npm uninstall webpack -g

 指定版本安装,因为项目只用1.15.0的版本 所以在安装时就安装1.15.0的版本

npm install [email protected] -g --registry=https://registry.npm.taobao.org

再在本地安装依赖

npm install [email protected] --save-dev

webpack -v