运行 npm run dev 报错

1.报错:

刚刚创建好vue项目的时候,运行 npm run dev 会报错,如下:

C:\Users\未来\Desktop\新建文件夹 (2)>npm run dev
npm ERR! path C:\Users\未来\Desktop\新建文件夹 (2)\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\未来\Desktop\新建文件夹 (2)\package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\未来\AppData\Roaming\npm-cache\_logs\2019-12-30T01_49_24_562Z-debug.log

C:\Users\未来\Desktop\新建文件夹 (2)>

2.解决方法:

npm run dev 或者 npm run xxx 其实是在执行配置项package.json中的脚本,如:

"scripts": {
    "dev": "node build/dev-server.js",
	"serve": "node build/dev-server.js",
    "build": "node build/build.js",
    "lint": "eslint --ext .js,.vue src"
  },

npm run dev 运行的是 node build/dev-serve.js;
scripts 中并没有配置 dev ，所以控制台报了 [ missing script: dev ] 的错误;

3.总结:

在 package.json scripts 配置了，才能 npm run dev。