我已经使用https://nodejs.org/en/download/上的 msi 文件在Windows 7上安装了 nodejs ，节点：v6.11.3（包括 npm 3.10.10）
试图运行我的应用程序
npm start
我得到错误
D:\dev_projects\nodejs_apps\react-practice>npm start
npm ERR! Windows_NT 6.1.7600
npm ERR! argv "D:\\nodejs\\node.exe" "D:\\nodejs\\node_modules\\npm\\bin \\npm-cli.js" "start"
npm ERR! node v6.11.3
npm ERR! npm v3.10.10
npm ERR! Invalid version: "y"
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR! <https://github.com/npm/npm/issues>
npm ERR! Please include the following file with any support request:
npm ERR! D:\dev_projects\nodejs_apps\react-practice\npm-debug.log
D:\dev_projects\nodejs_apps\react-practice\npm-debug.log中的文件包含：
0 info it worked if it ends with ok
1 verbose cli [ 'D:\\nodejs\\node.exe',
1 verbose cli 'D:\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'start' ]
2 info using npm@3.10.10
3 info using node@v6.11.3
4 verbose stack Error: Invalid version: "y"
4 verbose stack at Object.fixVersionField (D:\nodejs\node_modules\npm\node_modules\normalize-package-data\lib\fixer.js:191:13)
4 verbose stack at D:\nodejs\node_modules\npm\node_modules\normalize-package-data\lib\normalize.js:32:38
4 verbose stack at Array.forEach (native)
4 verbose stack at normalize (D:\nodejs\node_modules\npm\node_modules\normalize-package-data\lib\normalize.js:31:15)
4 verbose stack at final (D:\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:349:5)
4 verbose stack at then (D:\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:124:5)
4 verbose stack at ReadFileContext.<anonymous> (D:\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:308:29)
4 verbose stack at ReadFileContext.callback (D:\nodejs\node_modules\npm\node_modules\graceful-fs\graceful-fs.js:78:16)
4 verbose stack at FSReqWrap.readFileAfterOpen [as oncomplete] (fs.js:367:13)
5 verbose cwd D:\dev_projects\nodejs_apps\react-practice
6 error Windows_NT 6.1.7600
7 error argv "D:\\nodejs\\node.exe" "D:\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
8 error node v6.11.3
9 error npm v3.10.10
10 error Invalid version: "y"
11 error If you need help, you may report this error at:
11 error <https://github.com/npm/npm/issues>
12 verbose exit [ 1, true ]
然后我将 npm 升级到使用npm install -g npm 版本5.4.2
我再次运行 npm start ，这似乎已经解决npm ERR! Windows_NT 6.1.7600了错误，但错误npm ERR! Invalid version: "y"是持久的：
D:\dev_projects\nodejs_apps\react-practice>npm start
npm ERR! Invalid version: "y"
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\repair\AppData\Roaming\npm-cache\_logs \2017-09-17T10_53_27_236Z-debug.log
上述2017-09-17T10_53_27_236Z-debug.log-debug.log文件包含以下内容：
0 info it worked if it ends with ok
1 verbose cli [ 'D:\\nodejs\\node.exe',
1 verbose cli 'C:\\Users\\repair\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'start' ]
2 info using npm@5.4.2
3 info using node@v6.11.3
4 verbose stack Error: Invalid version: "y"
4 verbose stack at Object.fixVersionField (C:\Users\repair\AppData\Roaming\npm\node_modules\npm\node_modules\normalize-package-data\lib\fixer.js:191:13)
4 verbose stack at C:\Users\repair\AppData\Roaming\npm\node_modules\npm\node_modules\normalize-package-data\lib\normalize.js:32:38
4 verbose stack at Array.forEach (native)
4 verbose stack at normalize (C:\Users\repair\AppData\Roaming\npm\node_modules\npm\node_modules\normalize-package-data\lib\normalize.js:31:15)
4 verbose stack at final (C:\Users\repair\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:395:5)
4 verbose stack at then (C:\Users\repair\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:160:5)
4 verbose stack at C:\Users\repair\AppData\Roaming\npm\node_modules\npm\node_modules\read-package-json\read-json.js:280:12
4 verbose stack at C:\Users\repair\AppData\Roaming\npm\node_modules\npm\node_modules\graceful-fs\graceful-fs.js:78:16
4 verbose stack at tryToString (fs.js:457:3)
4 verbose stack at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:444:12)
5 verbose cwd D:\dev_projects\nodejs_apps\react-practice
6 verbose Windows_NT 6.1.7600
7 verbose argv "D:\\nodejs\\node.exe" "C:\\Users\\repair\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "start"
8 verbose node v6.11.3
9 verbose npm v5.4.2
10 error Invalid version: "y"
11 verbose exit [ 1, true ]
所以升级npm似乎并不能解决这个问题快速谷歌搜索：npm ERR！无效版本：“y” 返回与匹配 npm 版本号和 semver 规则相关的解决方案。