Node.js 理解节点引用错误转储

试图通过了解错误转储来更好地了解如何进行调试。例如，我有一个参考错误，如下所示：

ReferenceError: Can't find variable: title

This error is located at:
    in TimerForm (at ToggleTimerForm.js:44)
    in RCTView (at View.js:60)
    in View (at ToggleTimerForm.js:42)
    in ToggleableTimerForm (at App.js:54)
    in RCTView (at View.js:60)
    in View (at ScrollView.js:791)
    in RCTScrollView (at ScrollView.js:887)
    in ScrollView (at App.js:53)
    in RCTView (at View.js:60)
    in View (at App.js:47)
    in App (at registerRootComponent.js:35)
    in RootErrorBoundary (at registerRootComponent.js:34)
    in ExpoRootComponent (at renderApplication.js:33)
    in RCTView (at View.js:60)
    in View (at AppContainer.js:102)
    in RCTView (at View.js:60)
    in View (at AppContainer.js:122)
    in AppContainer (at renderApplication.js:32)

* components/TimerForm.js:54:6 in render
- node_modules/react-proxy/modules/createPrototypeProxy.js:44:35 in proxiedMethod
- node_modules/react-native/Libraries/Renderer/ReactNativeRenderer-dev.js:8811:23 in finishClassComponent
- ... 17 more stack frames from framework internals

本能地，我首先看到的是TimerForm，但随后我看到也列出了ToggleTimerForm.js。“in”是什么意思，“at”是什么意思？还有，为什么列出这么多文件？它们在这个错误转储中的意义是什么

我很想更好地了解这一切是如何运作的

这基本上只是一个，一系列相互调用的函数。通常，您希望查看最新版本中的简单错误，但通常您可能需要在堆栈上再上几层才能理解逻辑

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请注意，根据框架的不同，调用堆栈可能以不同的方式显示。在本例中，您看到的是react调用堆栈，而不是vanilla node.js。

它是错误堆栈。该错误是在“TimerForm ToogleTimerForm.js”处引发的，该错误正在RCTView View.js中使用，该错误正在View ToggleTimerForm.js中使用。蓝色的名称是在相同或不同的js文件中相互调用的函数名