标签: react-native-hermes

将我的应用程序更新到react-native v0.66.0后，如果启用了hermes，我会不断收到此错误。我尝试删除 DerivedData 文件夹、podfile podfile.lock...但没有任何帮助

终端输出

duplicate symbol 'folly::exception_wrapper::from_exception_ptr(std::exception_ptr&&)' in:
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/Flipper-Folly/libFlipper-Folly.a(ExceptionWrapper.o)
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/RCT-Folly/libRCT-Folly.a(ExceptionWrapper.o)
duplicate symbol 'folly::exception_wrapper::from_exception_ptr(std::exception_ptr const&)' in:
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/Flipper-Folly/libFlipper-Folly.a(ExceptionWrapper.o)
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/RCT-Folly/libRCT-Folly.a(ExceptionWrapper.o)
duplicate symbol 'folly::exception_wrapper::onNoExceptionError(char const*)' in:
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/Flipper-Folly/libFlipper-Folly.a(ExceptionWrapper.o)
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/RCT-Folly/libRCT-Folly.a(ExceptionWrapper.o)
duplicate symbol 'folly::exceptionStr(folly::exception_wrapper const&)' in:
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/Flipper-Folly/libFlipper-Folly.a(ExceptionWrapper.o)
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/RCT-Folly/libRCT-Folly.a(ExceptionWrapper.o)
duplicate symbol 'folly::exception_wrapper::uninit_' in:
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/Flipper-Folly/libFlipper-Folly.a(ExceptionWrapper.o)
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/RCT-Folly/libRCT-Folly.a(ExceptionWrapper.o)
duplicate symbol 'folly::exception_wrapper::ExceptionPtr::ops_' in:
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/Flipper-Folly/libFlipper-Folly.a(ExceptionWrapper.o)
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/RCT-Folly/libRCT-Folly.a(ExceptionWrapper.o)
duplicate symbol 'folly::exception_wrapper::SharedPtr::ops_' in:
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/Flipper-Folly/libFlipper-Folly.a(ExceptionWrapper.o)
    /Users/cuongtd/Library/Developer/Xcode/DerivedData/MyApp-ekbbcdnefrapxuertuowclstsjop/Build/Products/Debug-iphonesimulator/RCT-Folly/libRCT-Folly.a(ExceptionWrapper.o)
ld: 7 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

ios/podfile

platform :ios, '11.0'
require_relative '../node_modules/react-native/scripts/react_native_pods'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules' …

我创建了一个新的 React Native 项目，然后安装 npm ，运行命令 bundle install ，然后 cd iOS pod install 但它卡住了

Installing React-perflogger (0.71.2)
Installing React-runtimeexecutor (0.71.2)
Installing ReactCommon (0.71.2)
Installing SocketRocket (0.6.0)
Installing TOCropViewController (2.6.1)
Installing Yoga (1.14.0)
Installing YogaKit (1.18.1)
Installing boost (1.76.0)
Installing fmt (6.2.1)
Installing glog (0.3.5)
Installing hermes-engine (0.71.2)

这是我的 package.json 文件

{
  "name": "ApproverApp",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "android": "react-native run-android",
    "ios": "react-native run-ios",
    "lint": "eslint .",
    "start": "react-native start",
    "test": "jest"
  },
  "dependencies": {
    "@react-native-async-storage/async-storage": "^1.16.1",
    "@react-navigation/bottom-tabs": "^6.2.0", …

我已经在我的react-native(v0.64)应用程序中启用了Hermes。每次我运行应用程序时，我都会得到以下堆栈跟踪。

dyld: dyld cache load error: shared cache file open() failed
dyld: Library not loaded: @rpath/hermes.framework/hermes
  Referenced from: /Users/sharktank/Library/Developer/CoreSimulator/Devices/A32F4931-51A8-4D22-AEFB-625F834CE221/data/Containers/Bundle/Application/71773888-08D5-4B82-9545-07F6B1538864/COSPM-DEV.app/COSPM-DEV
  Reason: image not found
dyld: launch, loading dependent libraries
DYLD_SHARED_CACHE_DIR=/Users/sharktank/Library/Developer/CoreSimulator/Caches/dyld/20E232/com.apple.CoreSimulator.SimRuntime.iOS-14-4.18D46
DYLD_ROOT_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot
DYLD_LIBRARY_PATH=/Users/sharktank/Library/Developer/Xcode/DerivedData/COSPM-atbujvbobdbyehckyoqrdgmqiubm/Build/Products/Debug-iphonesimulator:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/introspection
DYLD_INSERT_LIBRARIES=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libBacktraceRecording.dylib:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSim
(lldb) 

我已经在 Podfile 中启用了 Hermes，在 pod install 后，Pods 文件夹中可以使用 pod。项目与其他项目一起采用单一存储库架构。在同一个 mono-repo 包中启用 Hermes 的另一个应用程序工作正常，没有崩溃。

播客文件：

require_relative '../../../node_modules/react-native/scripts/react_native_pods'
require_relative '../../../node_modules/@react-native-community/cli-platform-ios/native_modules'

platform :ios, '10.0'
source 'https://github.com/CocoaPods/Specs.git'

target 'COSPM' do
  config = use_native_modules!

  use_react_native!(
    :path => config[:reactNativePath],
    # to enable hermes on iOS, change `false` to `true` and then install pods …

脚蹼Hermes debugger不显示

请问如何让他正常显示\xef\xbc\x9f

react-native\xef\xbc\x9a0.62.2（从0.61更新到0.62.2）

https://fbflipper.com/

https://reactnative.dev/docs/hermes

错误信息：

Metro is connected but no Hermes apps were found.\n\nOpen a React Native screen with Hermes enabled to connect. Note: you may need to reload the app in order to reconnect the device to Metro.\n

我正在尝试Hermes在新项目中启用，但尽管我已启用它，android/app/build.gradle但未启用。Engine: Hermes如文档中所述，我无法在应用程序中看到文本。我正在使用WebStorm 2019.2项目模板。

应用程序.js：

// imports
const App = () => {
  return (
    <Fragment>
      <StatusBar barStyle="dark-content"/>
      <SafeAreaView>
        <ScrollView
          contentInsetAdjustmentBehavior="automatic"
          style={styles.scrollView}>
          <Header/>
          {global.HermesInternal == null ? null : (
            <View style={styles.engine}>
              <Text style={styles.footer}>Engine: Hermes</Text>
            </View>
          )}
          // rest of the default ui omitted
        </ScrollView>
      </SafeAreaView>
    </Fragment>
  );
};

export default App;

babel.cofig.js：

module.exports = {
  presets: ['module:metro-react-native-babel-preset'],
};

地铁.config.js：

module.exports = {
  transformer: {
    getTransformOptions: async () => ({
      transform: {
        experimentalImportSupport: …

我使用 react-native 0.61.2 创建了我的应用程序的发布版本并启用了 Hermes。在我的 Crashlytics 中，我收到有关崩溃的信息以及堆栈跟踪。以前我曾经应用 apktool 从我的 apk 中提取 index.android.bundle，它包含我能够通过堆栈跟踪找到问题的 js 代码。

但是现在使用 Hermes index.android.bundle 似乎包含字节码而不是 js，我浪费了一天试图反汇编它。我尝试的最后一件事是https://github.com/facebook/hermes/blob/master/doc/BuildingAndRunning.md 中提到的hbcdump工具，但我得到的只是“错误：无法反序列化字节码：错误的字节码版本。预期73 但得到了 62"

我应该怎么做才能反汇编用 Hermes 创建的 index.android.bundle？任何帮助表示高度赞赏！

我正在开发一个反应本机项目，该项目最初使用旧的反应本机版本。更新项目以使用最新的react-native版本，在其他方面都非常成功。但是，我无法为 Android 启用 Hermes 引擎。

我已按照此处的官方步骤操作：Using Hermes。为了确认 Hermes 是否已启用，我清理并重建了 android 项目，在调试模式下运行应用程序并使用以下代码：

const isHermes = () => !!global.HermesInternal;
console.log(isHermes());

Flipper v0.80.0 也找不到 Hermes 应用程序。

android/build.gradle

buildscript {
    ext {
        buildToolsVersion = "29.0.3"
        minSdkVersion = 21
        compileSdkVersion = 29
        targetSdkVersion = 29
        ndkVersion = "20.1.5948944"
        supportLibVersion = "29.0.0"
        googlePlayServicesVersion = "+"
        firebaseVersion = "+"
        ext.kotlinVersion = '1.3.10'
    }
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath('com.android.tools.build:gradle:4.1.0')
        classpath "com.google.gms:google-services:4.3.3"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
    }
}

allprojects {
    repositories {
        mavenLocal()
        maven {
            url("$rootDir/../node_modules/react-native/android") …

我正在构建一个React-Native应用程序，一切正常，直到我决定从版本 0.59.x 升级到v 0.61.5。

当我尝试在 Play 商店中发布我的应用程序时，Firebase Crashlytics ( v 6.2.0 )报告了很多崩溃——尽管我的版本仅用于内部测试，所以它必须是一个预由 playstore 触发的启动报告- 对于完全相同的设备 => LGE Nexus 5X with android 6.0.1完全相同。

Fatal Exception: java.lang.UnsatisfiedLinkError: couldn't find DSO to load: libhermes.so
       at com.facebook.soloader.SoLoader.assertInitialized(SoLoader.java)
       at com.facebook.soloader.SoLoader.assertInitialized(SoLoader.java)
       at com.facebook.soloader.SoLoader.assertInitialized(SoLoader.java)
       at com.facebook.soloader.SoLoader.assertInitialized(SoLoader.java)
       at com.facebook.hermes.reactexecutor.HermesExecutor.<clinit>(HermesExecutor.java)
       at com.facebook.hermes.reactexecutor.HermesExecutorFactory.create(HermesExecutorFactory.java)
       at com.facebook.react.ReactInstanceManager$5.run(ReactInstanceManager.java)
       at java.lang.Thread.run(Thread.java:818)

为了解决这个问题，我尝试提交多个具有略微不同 android 配置的版本（例如启用和不启用 hermes），但它不会改变最终结果。

这是我的build.gradle文件：

apply plugin: "com.android.application"
apply plugin: "io.fabric"

import com.android.build.OutputFile

/**
 * The react.gradle file registers …

我按照官方文档在我的应用程序中启用 Hermes 引擎，但以下内容始终返回 false：

    const isHermes = () => !!global.HermesInternal;
    console.log('>>>>>>>>>>>>>', isHermes());

我所做的更改是在 android/app/build.gradle 中设置以下内容：

project.ext.react = [
    enableHermes: true,  // clean and rebuild if changing
]

然后我做了一个干净的构建：

cd android && ./gradlew clean

yarn android

但console.log总是返回false

每当我的代码在本地使用 Hermes 运行 expo 时出现错误，我也会收到以下错误消息：

Error: ENOENT: no such file or directory, open 'C:\Users\kudo\01_Work\Repos\expo\expo\android\versioned-react-native\ReactAndroid\hermes-engine\.cxx\MinSizeRel\6d3b5k69\x86\lib\InternalBytecode\InternalBytecode.js'

现在，如果我修复代码错误，例如缺少括号，上述错误也会消失并且一切正常。但是，无论我的代码中存在什么错误，都会出现此错误，并且它相当冗长并且阻止我进行调试。如果我删除 Hermes，错误也会消失，但我想使用 Hermes。

这是我的环境信息：

  expo-env-info 1.0.5 environment info:
    System:
      OS: Windows 10 10.0.19044
    Binaries:
      Node: 16.16.0 - C:\Program Files\nodejs\node.EXE
      Yarn: 1.22.19 - ~\AppData\Roaming\npm\yarn.CMD  
      npm: 9.1.1 - C:\Program Files\nodejs\npm.CMD    
    IDEs:
      Android Studio: AI-212.5712.43.2112.8609683
    npmPackages:
      expo: ^46.0.0 => 46.0.15
      react: 18.0.0 => 18.0.0
      react-dom: 18.0.0 => 18.0.0
      react-native: 0.69.6 => 0.69.6
      react-native-web: ~0.18.7 => 0.18.9
    Expo Workflow: managed

我尝试过的事情：

• rm -rf node_modules
• npm cache clean --force
• 删除appdata中的metro_cache文件夹
• npx …