在android emulator中运行react native

我试图运行init react本机项目，由于某种原因，我得到了一个500错误

这是控制台日志

Danny@DESKTOP-GIRS9GM /cygdrive/c/Users/Danny/Desktop/TestProject
$ react-native run-android
Scanning 557 folders for symlinks in C:\Users\Danny\Desktop\TestProject\node_modules (29ms)
JS server already running.
Building and installing the app on the device (cd android && gradlew.bat installDebug)...
Incremental java compilation is an incubating feature.
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72301Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42301Library UP-TO-DATE
:app:prepareComFacebookFbuiTextlayoutbuilderTextlayoutbuilder100Library UP-TO-DATE
:app:prepareComFacebookFrescoDrawee101Library UP-TO-DATE
:app:prepareComFacebookFrescoFbcore101Library UP-TO-DATE
:app:prepareComFacebookFrescoFresco101Library UP-TO-DATE
:app:prepareComFacebookFrescoImagepipeline101Library UP-TO-DATE
:app:prepareComFacebookFrescoImagepipelineBase101Library UP-TO-DATE
:app:prepareComFacebookFrescoImagepipelineOkhttp3101Library UP-TO-DATE
:app:prepareComFacebookReactReactNative0471Library UP-TO-DATE
:app:prepareComFacebookSoloaderSoloader010Library UP-TO-DATE
:app:prepareOrgWebkitAndroidJscR174650Library UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:mergeDebugShaders UP-TO-DATE
:app:compileDebugShaders UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:bundleDebugJsAndAssets SKIPPED
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources UP-TO-DATE
:app:transformClassesWithDexForDebug UP-TO-DATE
:app:mergeDebugJniLibFolders UP-TO-DATE
:app:transformNative_libsWithMergeJniLibsForDebug UP-TO-DATE
:app:processDebugJavaRes UP-TO-DATE
:app:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
:app:validateSigningDebug
:app:packageDebug UP-TO-DATE
:app:assembleDebug UP-TO-DATE
:app:installDebug
Installing APK 'app-debug.apk' on 'Nexus_5X_API_26(AVD) - 8.0.0' for app:debug
Installed on 1 device.

BUILD SUCCESSFUL

Total time: 15.967 secs
Running C:\Users\Danny\AppData\Local\Android\sdk/platform-tools/adb -s emulator-5554 reverse tcp:8081 tcp:8081
Starting the app on emulator-5554 (C:\Users\Danny\AppData\Local\Android\sdk/platform-tools/adb -s emulator-5554 shell am start -n com.testproject/com.testproject.MainActivity)...

但是在设备上我得到了这个错误（在红色屏幕上）

这是打开的窗口中的消息（当我运行react native run android时）

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我不明白，为什么react native的init项目会出现错误？还是我做错了什么？我不确定了，谢谢

我认为您使用的是新版本的

babel-reset-react-native

库，新版本上有一个不受支持的尾随逗号

您可以安装库的早期版本：

npm uninstall babel-preset-react-native
npm install babel-preset-react-native@2.1.0

---

编辑-您可以在playframework存储库中看到问题：

您可以粘贴index.android.js代码吗。如果react-native不是最新版本，请尝试将其更新为最新版本。以下是index.android.js代码（来自npm安装）->并且react-native的版本为“react-native”：“0.47.1”（最新版本）安装以前的版本解决了此问题，我试着像你说的那样去掉逗号，但还是有同样的问题。谢谢没问题，我正在删除关于逗号的答案，可能库尝试转换的其他文件中有逗号

error: bundling failed: "TransformError: C:\\Users\\Danny\\Desktop\\TestProject\\index.android.js: Unexpected token ) (While processing preset: \"C:\\\\Users\\\\Danny\\\\Desktop\\\\TestProject\\\\node_modules\\\\babel-preset-react-native\\\\index.js\")"

npm uninstall babel-preset-react-native
npm install babel-preset-react-native@2.1.0