Question

希望有人可以提供帮助。我第一次尝试从终端更新并启动量角器，但出现了此错误消息。

我使用的命令是

npm run start

我看了一下package.json脚本，这看起来还不错。我错过了什么吗？

npm.json文件

{
  "name": "LocatorTraining",

  "dependencies": {

  "protractor":  "^5.4.1"

  },


  "scripts": {
    "webdriver-update": "./node_modules/.bin/webdriver-manager update",
    "webdriver-start": "./node_modules/.bin/webdriver-manager start",
    "protractor": "./node_modules/.bin/protractor configurations.js",
    "start": "npm run webdriver-manager update &&npm run webdriver-manager start"
  }

}

来自终端的消息

JohnSmith-MacBook-Air:~ JohnSmith$ npm run start
    npm ERR! Darwin 17.7.0
    npm ERR! argv "/Users/JohnSmith/.nvm/versions/node/v7.2.0/bin/node" "/Users/xx/.nvm/versions/node/v7.2.0/bin/npm" "run" "start"
    npm ERR! node v7.2.0
    npm ERR! npm  v3.10.9
    npm ERR! path /Users/JohnSmith/package.json
    npm ERR! code ENOENT
    npm ERR! errno -2
    npm ERR! syscall open

    npm ERR! enoent ENOENT: no such file or directory, open '/Users/JohnSmith/package.json'
    npm ERR! enoent ENOENT: no such file or directory, open '/Users/JohnSmith/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!     /Users/JohnSmith/npm-debug.log

因此，从下面的评论开始，我尝试在项目级别运行npm run start。

我得到了以下答复。

Ran the npm run start from project level> LocatorTraining@ start /Users/JohnSmith/Documents/JSworkspace/LocatorTraining
> npm run webdriver-manager update &&npm run webdriver-manager start

npm ERR! Darwin 17.7.0
npm ERR! argv "/Users/JohnSmith/.nvm/versions/node/v7.2.0/bin/node" "/Users/jacquelinegeorge/.nvm/versions/node/v7.2.0/bin/npm" "run" "webdriver-manager" "update"
npm ERR! node v7.2.0
npm ERR! npm  v3.10.9

npm ERR! missing script: webdriver-manager
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!     /Users/JohnSmith/Documents/JSworkspace/LocatorTraining/npm-debug.log

npm ERR! Darwin 17.7.0
npm ERR! argv "/Users/JohnSmith/.nvm/versions/node/v7.2.0/bin/node" "/Users/jacquelinegeorge/.nvm/versions/node/v7.2.0/bin/npm" "run" "start"
npm ERR! node v7.2.0
npm ERR! npm  v3.10.9
npm ERR! code ELIFECYCLE
npm ERR! LocatorTraining@ start: `npm run webdriver-manager update &&npm run webdriver-manager start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the LocatorTraining@ start script 'npm run webdriver-manager update &&npm run webdriver-manager start'.
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 LocatorTraining package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     npm run webdriver-manager update &&npm run webdriver-manager start
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs LocatorTraining
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls LocatorTraining
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/JohnSmith/Documents/JSworkspace/LocatorTraining/npm-debug.log

然后我尝试在项目级别访问npm调试日志

/Users/JohnSmith/Documents/JSworkspace/LocatorTraining/npm-debug.log: Permission denied

Answer 1

（最好将其作为注释，但我还是无法做到）

您在哪个目录中运行npm run start？似乎您在错误的位置运行了正确的命令。您要确保从项目目录中运行命令。

也就是说，如果您的package.json文件位于/Users/xx/protractorProj/package.json，则需要从npm run start运行/Users/xx/protractorProj命令。

Answer 2

浏览脚本

  "scripts": {
    "webdriver-update": "./node_modules/.bin/webdriver-manager update",
    "webdriver-start": "./node_modules/.bin/webdriver-manager start",
    "protractor": "./node_modules/.bin/protractor configurations.js",
    "start": "npm run webdriver-manager update &&npm run webdriver-manager start"
  }

此外，在错误回溯中，您发现：

npm ERR! missing script: webdriver-manager

可用的运行脚本与start中使用的运行脚本不匹配。
开始运行脚本应为：

"start": "npm run webdriver-update && npm run webdriver-start"

在Mac终端中运行npm run start以更新并启动Protractor Webdriver服务器收到ERR消息

2 个答案: