问题描述
我在Windows 10上，但我正在使用git bash.从git bash运行时，以下内容:
I'm on Windows 10, but I'm using git bash. When running from git bash the following:
DEBUG=foo node index.js
它可以正常工作并设置环境变量DEBUG.但是，如果我将其放入package.json的scripts部分:
it works fine and sets the environment variable DEBUG. But if I put it into the scripts section of the package.json:
"scripts": {
"start": "DEBUG=foo node index.js"
},
并从git bash运行以下命令，我得到以下错误:
and run the following from git bash I get the following error:
$ npm start > [email protected] start C:\Users\maksym.koretskyi\Desktop\nodejs > DEBUG=foo node index.js 'DEBUG' is not recognized as an internal or external command, operable program or batch file.
为什么会这样?
推荐答案
似乎您正在Windows上运行它.
It seems like you're running it on Windows.
假设您按照您所说的操作Bash，我将编写一个脚本:
Assuming that you have Bash working as you said, I would make a script:
#!/bin/bash DEBUG=foo node index.js
例如run-debug并使用:
"scripts": {
"start": "bash run-debug"
},
中的
，以确保Bash解释了DEBUG=foo node index.js命令，而不是command.com或Windows中的任何shell被解释.参见问题#6543:npm脚本shell选择.
in package.json to make sure that the DEBUG=foo node index.js command is interpreted by Bash and not command.com or whatever the shell in Windows is called. See Issue #6543: npm scripts shell select.
对于某些情况，即使您希望它甚至在没有Bash的系统上运行，也要获得最大的跨平台兼容性，最好使用Node脚本而不是Shell脚本:
For cases when you want it to run even on systems without Bash, for maximum cross-platform compatibility, it's even better to use a Node script instead of a shell script:
"scripts": {
"start": "node run-debug.js"
},
在这种情况下，run-debug.js可能包含以下内容:
In this case the run-debug.js could contain something like:
let env = Object.create(process.env);
env.DEBUG = 'foo';
spawn('node', ['app.js'], {env});
另请参阅:
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