最近电脑重装系统后运行 npm run dev 正常运行，npm run build 打包文件，提示如下错误：
Administrator@WIN-9PL8VSAPS0 MINGW64 /h/project_latest
$ npm run build
> demo@ build H:\project_package_version_latest
> cross-env NODE_ENV=production webpack --progress --hide-modules
'webpack' ▒▒▒▒▒ڲ▒▒▒▒ⲿ▒▒▒Ҳ▒▒▒ǿ▒▒▒▒еij▒▒▒
▒▒▒▒▒▒▒▒▒ļ▒▒▒
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\ node_modules\\npm\\bin\\npm-cli.js" "run" "build"
npm ERR! node v6.9.4
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! demo@ build: `cross-env NODE_ENV=production webpack --progress --hide-m odules`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the demo@ build script 'cross-env NODE_ENV=production webpack --progress --hide-modules'.
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 demo package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! cross-env NODE_ENV=production webpack --progress --hide-modules
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs demo
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls demo
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! H:\project_package_version_latest\npm-debug.log
家里的电脑上可以正常运行，考虑是缺少了什么文件，但不知道是哪个文件，网上搜索相关问题，最后看到一个
'NODE_ENV' ▒▒▒▒▒ڲ▒▒▒▒ⲿ▒▒▒Ҳ▒▒▒ǿ▒▒▒▒еij▒▒▒▒▒▒▒▒▒▒▒▒ļ▒▒▒
报错，于是回头看我那个
'webpack' ▒▒▒▒▒ڲ▒▒▒▒ⲿ▒▒▒Ҳ▒▒▒ǿ▒▒▒▒еij▒▒▒▒▒▒▒▒▒▒▒▒ļ▒▒▒
之前一直没注意到这个，这就是缺少的文件，原来我在项目本地安装了webpack，重装系统后未全局安装。
先全局安装webpack，
$ npm install webpack -g
C:\Users\Administrator\AppData\Roaming\npm\webpack -> C:\Users\Administrator\AppData\Roaming\npm\node_modules\webpack\bin\webpack.js
C:\Users\Administrator\AppData\Roaming\npm
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npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules\webpack\node_modules\chokidar\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
webpack安装成功，开始打包 npm run build
$ npm run build
> demo@ build H:\project_package_version_latest
> cross-env NODE_ENV=production 35% building modules 212/227 modules 15 active ...on_latest\src\assets\page-content.css
正在打包……
$ npm run build
Hash: b4ec0192fe9ac74b479e Version: webpack 2.1.0-beta.10 Time: 61343ms
打包成功。
网上看到一些类似的问题，基本都是
'webpack' ▒▒▒▒▒ڲ▒▒▒▒ⲿ▒▒▒Ҳ▒▒▒ǿ▒▒▒▒еij▒▒▒▒▒▒▒▒▒▒▒▒ļ▒▒▒
提示信息所指向的问题。