javascript - npm run build报错 这个是什么原因?

Question

Your environment has been set up for using Node.js 4.4.0 (x64) and npm.

C:\Users\Administrator>npm run build
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 v4.4.0
npm ERR! npm  v2.14.20
npm ERR! path C:\Users\Administrator\package.json
npm ERR! code ENOENT
npm ERR! errno -4058
npm ERR! syscall open

npm ERR! enoent ENOENT: no such file or directory, open 'C:\Users\Administrator\
package.json'
npm ERR! enoent This is most likely not a problem with npm itself
npm ERR! enoent and is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! Please include the following file with any support request:
npm ERR!     
C:\Users\Administrator\npm-debug.log

Answer 1

你要cd 到你的项目目录,这个目录里应该有个 package.json,
确认这个package.json里有 "scripts":{"build":"...."}

再用 npm run build 就可以了

Answer 2

npm ERR! enoent ENOENT: no such file or directory, open 'C:\Users\Administrator\
package.json'

Answer 3

1.要安装插件, npm install cross-env
2.然后在package.json里添加（粗体部分） "scripts":{"build":"cross-env NODE_ENV=development...."}