npm run dev 不起作用

Question

enter image description here I run npm run dev but I get this:

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli 'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'run',
1 verbose cli 'dev' ]
2 info using npm@5.5.1
3 info using node@v8.9.1
4 verbose run-script [ 'predev', 'dev', 'postdev' ]
5 info lifecycle @~predev: @
6 info lifecycle @~dev: @
7 verbose lifecycle @~dev: unsafe-perm in lifecycle true
8 verbose lifecycle @~dev: PATH: C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\node-gyp-bin;c:\\xampp\\htdocs\\laravelapp\\node_modules.bin;C:\\ProgramData\\Oracle\\Java\\javapath;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program Files (x86)\\Skype\\Phone\\;E:\\Java\\bin;C:\\Program Files\\Microsoft SQL Server\\130\\Tools\\Binn\\;C:\\Program Files\\dotnet\\;C:\\Program Files (x86)\\Brackets\\command;C:\\ProgramData\\ComposerSetup\\bin;C:\\Program Files\\PuTTY\\;C:\\Program Files (x86)\\WinSCP\\;C:\\Program Files\\Git\\cmd;C:\\Program Files\\nodejs\\;C:\\Program Files\\Java\\jdk1.8.0_112\\bin;L:\\Microsof3t VS Code\\bin;C:\\Users\\SuperServer\\AppData\\Local\\GitHubDesktop\\bin;C:\\Users\\SuperServer\\AppData\\Local\\atom\\bin;C:\\Xampp\\php;C:\\Users\\SuperServer\\AppData\\Roaming\\Composer\\vendor\\bin;E:\\nodeJs\\npm;E:\\NodeJS\\node_modules\\npm;C:\\Users\\SuperServer\\AppData\\Roaming\\npm;C:\\Program Files\\nodejs\\node_modules\\npm\\bin;
9 verbose lifecycle @~dev: CWD: c:\\xampp\\htdocs\\laravelapp
10 silly lifecycle @~dev: Args: [ '/d /s /c', 'npm run development' ]
11 info lifecycle @~dev: Failed to exec dev script
12 silly lifecycle @~dev: Returned: code: -4058 signal: null
13 info lifecycle @~dev: Failed to exec dev script
14 verbose stack Error: @ dev: npm run development
14 verbose stack spawn C:\\Windows\\system32\\cmd.exe; E:\\Java\\bin ENOENT
14 verbose stack at _errnoException (util.js:1024:11)
14 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19)
14 verbose stack at onErrorNT (internal/child_process.js:372:16)
14 verbose stack
at _combinedTickCallback (internal/process/next_tick.js:138:11)
14 verbose stack at process._tickCallback (internal/process/next_tick.js:180:9)
15 verbose pkgid @
16 verbose cwd c:\\xampp\\htdocs\\laravelapp
17 verbose Windows_NT 6.1.7601
18 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "dev"
19 verbose node v8.9.1
20 verbose npm v5.5.1
21 error file C:\\Windows\\system32\\cmd.exe; E:\\Java\\bin
22 error path C:\\Windows\\system32\\cmd.exe; E:\\Java\\bin
23 error code ELIFECYCLE
24 error errno ENOENT
25 error syscall spawn C:\\Windows\\system32\\cmd.exe; E:\\Java\\bin
26 error @ dev: npm run development
26 error spawn C:\\Windows\\system32\\cmd.exe; E:\\Java\\bin ENOENT
27 error Failed at the @ dev script.
27 error This is probably not a problem with npm. There is likely additional logging output above.
28 verbose exit [ 1, true ]

Can anyone help me with this?

Answer 1

It seems that your "dev" task errors because it tries to spawn a new java process with the java binary located at E:\\Java\\bin but this binary doesn't exist (ENOENT). Can you add an excerpt of the "package.json" file with definition of your "dev" script?

Answer 2

This is a pretty common error. Especially if you are running your npm command from an integrated terminal.

Try running your npm commands from a separate PowerShell or CMD command prompt terminal and you would be just fine.

I hope this helps someone out there.