nodemon,开玩笑,安装错误,版本,控制台日志

Question

我正在尝试为我的 nodejs 项目安装 jest 和 nodemon，我使用的是 vscode、npm 版本 6.13.7 和 node 版本 13.8.0。当我尝试通过命令行安装 nodemon 时，我得到以下控制台日志...

 npm install nodemon --save-dev

> deasync@0.1.14 install C:\cypher_network\node_modules\deasync
> node ./build.js


C:\cypher_network\node_modules\deasync>if not defined npm_config_node_gyp (node "C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" rebuild )
gyp ERR! find Python 
gyp ERR! find Python Python is not set from command line or npm configuration
gyp ERR! find Python Python is not set from environment variable PYTHON
gyp ERR! find Python checking if "python" can be used
gyp ERR! find Python - "python" is not in PATH or produced an 
error
gyp ERR! find Python checking if "python2" can be used        
gyp ERR! find Python - "python2" is not in PATH or produced an error
gyp ERR! find Python checking if "python3" can be used        
gyp ERR! find Python - "python3" is not in PATH or produced an error
gyp ERR! find Python checking if the py launcher can be used to find Python 2
gyp ERR! find Python - "py.exe" is not in PATH or produced an 
error
gyp ERR! find Python checking if Python is C:\Python27\python.exe
gyp ERR! find Python - "C:\Python27\python.exe" could not be run
gyp ERR! find Python checking if Python is C:\Python37\python.exe
gyp ERR! find Python - "C:\Python37\python.exe" could not be run
gyp ERR! find Python
gyp ERR! find Python **********************************************************
gyp ERR! find Python You need to install the latest version of Python.
gyp ERR! find Python Node-gyp should be able to find and use Python. If not,
gyp ERR! find Python you can try one of the following options:gyp ERR! find Python - Use the switch --python="C:\Path\To\python.exe"
gyp ERR! find Python   (accepted by both node-gyp and npm)    
gyp ERR! find Python - Set the environment variable PYTHON    
gyp ERR! find Python - Set the npm configuration variable python:
gyp ERR! find Python   npm config set python "C:\Path\To\python.exe"
gyp ERR! find Python For more information consult the documentation at:
gyp ERR! find Python https://github.com/nodejs/node-gyp#installation
gyp ERR! find Python **********************************************************
gyp ERR! find Python
gyp ERR! configure error
gyp ERR! stack Error: Could not find any Python installation to use
gyp ERR! stack     at PythonFinder.fail (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:307:47)
gyp ERR! stack     at PythonFinder.runChecks (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:136:21)
gyp ERR! stack     at PythonFinder.<anonymous> (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:225:16)
gyp ERR! stack     at PythonFinder.execFileCallback (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:271:16)
gyp ERR! stack     at exithandler (child_process.js:310:5)    
gyp ERR! stack     at ChildProcess.errorhandler (child_process.js:322:5)
gyp ERR! stack     at ChildProcess.emit (events.js:321:20)    
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)
gyp ERR! stack     at onErrorNT (internal/child_process.js:467:16)
gyp ERR! stack     at processTicksAndRejections (internal/process/task_queues.js:84:21)
gyp ERR! System Windows_NT 10.0.18362
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\Mickell\\AppData\\Roaming\\npm\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\cypher_network\node_modules\deasync
gyp ERR! node -v v13.8.0
gyp ERR! node-gyp -v v5.0.7
gyp ERR! not ok
Build failed
npm WARN cryptochain@1.0.0 No description
npm WARN cryptochain@1.0.0 No repository field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.11 (node_modules\nodemon\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.11: wanted {"os":"darwin","arch":"any"} 
(current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! deasync@0.1.14 install: `node ./build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the deasync@0.1.14 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Mickell\AppData\Roaming\npm-cache\_logs\2020-02-27T05_58_06_796Z-debug.log

安装 jest 时，我收到以下控制台错误日志...

$ npm i jest --save-dev
npm WARN deprecated left-pad@1.3.0: use String.prototype.padStart()
npm WARN deprecated kleur@2.0.2: Please upgrade to kleur@3 or 
migrate to 'ansi-colors' if you prefer the old syntax. Visit <https://github.com/lukeed/kleur/releases/tag/v3.0.0\> for migration path(s).

> deasync@0.1.14 install C:\cypher_network\node_modules\deasync
> node ./build.js


C:\cypher_network\node_modules\deasync>if not defined npm_config_node_gyp (node "C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" rebuild )
gyp ERR! find Python 
gyp ERR! find Python Python is not set from command line or npm configuration
gyp ERR! find Python Python is not set from environment variable PYTHON
gyp ERR! find Python checking if "python" can be used
gyp ERR! find Python - "python" is not in PATH or produced an 
error
gyp ERR! find Python checking if "python2" can be used        
gyp ERR! find Python - "python2" is not in PATH or produced an error
gyp ERR! find Python checking if "python3" can be used        
gyp ERR! find Python - "python3" is not in PATH or produced an error
gyp ERR! find Python checking if the py launcher can be used to find Python 2
gyp ERR! find Python - "py.exe" is not in PATH or produced an 
error
gyp ERR! find Python checking if Python is C:\Python27\python.exe
gyp ERR! find Python - "C:\Python27\python.exe" could not be run
gyp ERR! find Python checking if Python is C:\Python37\python.exe
gyp ERR! find Python - "C:\Python37\python.exe" could not be run
gyp ERR! find Python
gyp ERR! find Python **********************************************************
gyp ERR! find Python You need to install the latest version of Python.
gyp ERR! find Python Node-gyp should be able to find and use Python. If not,
gyp ERR! find Python you can try one of the following options:gyp ERR! find Python - Use the switch --python="C:\Path\To\python.exe"
gyp ERR! find Python   (accepted by both node-gyp and npm)    
gyp ERR! find Python - Set the environment variable PYTHON    
gyp ERR! find Python - Set the npm configuration variable python:
gyp ERR! find Python   npm config set python "C:\Path\To\python.exe"
gyp ERR! find Python For more information consult the documentation at:
gyp ERR! find Python https://github.com/nodejs/node-gyp#installation
gyp ERR! find Python **********************************************************
gyp ERR! find Python
gyp ERR! configure error
gyp ERR! stack Error: Could not find any Python installation to use
gyp ERR! stack     at PythonFinder.fail (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:307:47)
gyp ERR! stack     at PythonFinder.runChecks (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:136:21)
gyp ERR! stack     at PythonFinder.<anonymous> (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:225:16)
gyp ERR! stack     at PythonFinder.execFileCallback (C:\Users\Mickell\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\find-python.js:271:16)
gyp ERR! stack     at exithandler (child_process.js:310:5)
gyp ERR! stack     at ChildProcess.errorhandler (child_process.js:322:5)
gyp ERR! stack     at ChildProcess.emit (events.js:321:20)    
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12)
gyp ERR! stack     at onErrorNT (internal/child_process.js:467:16)
gyp ERR! stack     at processTicksAndRejections (internal/process/task_queues.js:84:21)
gyp ERR! System Windows_NT 10.0.18362
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\Mickell\\AppData\\Roaming\\npm\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\cypher_network\node_modules\deasync
gyp ERR! node -v v13.8.0
gyp ERR! node-gyp -v v5.0.7
gyp ERR! not ok
Build failed
npm WARN cryptochain@1.0.0 No description
npm WARN cryptochain@1.0.0 No repository field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! deasync@0.1.14 install: `node ./build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the deasync@0.1.14 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Mickell\AppData\Roaming\npm-cache\_logs\2020-02-27T06_04_25_295Z-debug.log

我怀疑这两个控制台错误日志的一部分，即“gyp ERR！cwd C:\cypher_network\node_modules\deasync 吉普错误！节点-v v13.8.0 吉普错误！节点gyp -v v5.0.7 吉普错误！不好 构建失败”我希望这可以缩小问题的范围，谢谢！ 我

Answer 1

您需要安装 Python：https://realpython.com/installing-python/ 或 https://www.python.org/downloads/。

您项目中的包依赖项使用node-gyp 在安装时为您的操作系统构建自己，这需要 Python。有关详细信息，请参阅 node-gyp 的链接。

您所依赖的 deasync 包正在执行此操作。它是用 C++ 编写的。你要么直接需要deasync，要么它是你需要的其他包的传递依赖。