在 React Native 中记录当前目录/文件名 [英] Logging Current Directory/Filename in React Native

问题描述

我想知道是否有办法在 React Native 中记录当前文件名或目录.类似于 NodeJS 使用 __filename 和 __dirname 的方式.

I was wondering if there is a way to log the current filename or directory in React Native. Similar to how NodeJS does it with __filename and __dirname.

推荐答案

不，这是不可能的，因为所有的源代码都被捆绑到一个大文件中，然后提供了一个源映射，以便您可以在原始结构.
您可以通过在代码中的某处调用此代码片段来看到这一点:

No, it's not possible since all the source code gets bundled together into one big file, and then a source map is provided so that you can debug it in the original structure.
You can see that by calling this code snippet somewhere in your code:

console.log(new Error().stack);

在常规 javascript 中，您将获得包含文件和行号的完整跟踪，但在 react-native 中，您会得到如下内容:

In a regular javascript you would get the entire trace with files and line numbers, but in react-native you get somthing like:

Error
at Login (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:83009:9)
at instantiate (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:5712:18)
at new Login (eval at proxyClass (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:5730:16), <anonymous>:4:17)
at ReactCompositeComponentWrapper._constructComponentWithoutOwner (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:22051:19)
at ReactCompositeComponentWrapper._constructComponent (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:22033:13)
at ReactCompositeComponentWrapper.mountComponent (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:21952:15)
at Object.mountComponent (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:20425:29)
at ReactCompositeComponentWrapper.performInitialMount (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:22134:28)
at ReactCompositeComponentWrapper.mountComponent (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:22015:13)
at Object.mountComponent (http://localhost:8081/index.android.bundle?platform=android&dev=true&hot=true&minify=false:20425:29)"

显示真实文件已经消失.

which shows you the real files are gone.

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