undefined 不是 expo React Native 项目中的对象 global.performance.now
我正在尝试使用 expo start 命令运行该应用程序。到目前为止一切都很好，但今天却显示成这样。
任何帮助将不胜感激！ :)
这些是我的依赖项，
{
"dependencies": {
"@expo-google-fonts/manrope": "^0.2.0",
"@expo-google-fonts/roboto": "^0.2.2",
"@expo/react-native-action-sheet": "^3.12.0",
"@flyerhq/react-native-link-preview": "^1.6.0",
"@gorhom/bottom-sheet": "4",
"@react-native-async-storage/async-storage": "~1.15.0",
"@react-native-community/clipboard": "^1.5.1",
"@react-native-community/hooks": "^2.8.1",
"@react-native-community/masked-view": "^0.1.11",
"@react-native-community/netinfo": "7.1.3",
"@react-native-firebase/app": "^14.5.0",
"@react-native-firebase/messaging": "^14.5.0",
"@react-native-picker/picker": "2.2.1",
"@react-navigation/core": "^6.1.1",
"@react-navigation/material-top-tabs": "^6.0.6",
"@react-navigation/native": "^6.0.6",
"@react-navigation/native-stack": "^6.2.5",
"@react-navigation/stack": "^6.1.1",
"@stomp/stompjs": "^6.1.2",
"@stripe/stripe-react-native": "0.2.3",
"expo-linking": "~3.0.0",
"expo-media-library": "~14.0.0",
"expo-notifications": "~0.14.0",
"expo-splash-screen": "~0.14.1",
"expo-status-bar": "~1.2.0",
"expo-updates": "~0.11.6",
"expo-web-browser": "~10.1.0",
"firebase": "^9.6.7",
"firebase-admin": "^10.0.0",,
"react": "17.0.1",
"react-dom": "17.0.1",
"react-native": "0.64.3",
"react-native-actionsheet": "^2.4.2",
"react-native-bottomsheet-reanimated": "^0.1.1",
"react-native-gesture-handler": "~2.1.0",
"react-native-hold-menu": "^0.1.1",
"react-native-image-crop-picker": "^0.37.2",
"react-native-image-picker": "^4.7.0",
"react-native-image-resizer": "^1.4.5",
"react-native-image-viewing": "^0.2.1",
"react-native-ionicons": "^4.x",
"react-native-keyboard-aware-scroll-view": "^0.9.5",
"react-native-linear-gradient": "^2.5.6",
"react-native-link-preview": "^1.4.2",
"react-native-pager-view": "5.4.9",
"react-native-parsed-text": "^0.0.22",
"react-native-push-notification": "^8.1.1",
"react-native-reanimated": "2.4.1",
"react-native-safe-area-context": "^3.3.2",
"react-native-screens": "~3.10.1",
"react-native-sticky-parallax-header": "^0.4.1",
"react-native-svg": "12.1.1",
"react-native-svg-charts": "^5.4.0",
"react-native-tab-view": "^3.1.1",
"react-native-unimodules": "0.12.0",
"react-native-vector-icons": "^9.0.0",
"react-native-web": "0.17.1",
"react-native-webview": "11.15.0",
"react-navigation": "^4.4.4",
"rn-fetch-blob": "^0.12.0",
"socket.io-client": "^4.4.1",
"sockjs-client": "1.4.0",
"stompjs": "2.3.3",
"text-encoding": "^0.7.0",
"url": "^0.11.0",
"watchman": "^1.0.0"
}}
我尝试更改react-native-reanimated包的版本，但仍然无法找出问题。
I'm trying to run the app using the expo start command. It worked fine so far but today it's showing like this.
Any help would be greatly appreciated! :)
These are my dependencies
{
"dependencies": {
"@expo-google-fonts/manrope": "^0.2.0",
"@expo-google-fonts/roboto": "^0.2.2",
"@expo/react-native-action-sheet": "^3.12.0",
"@flyerhq/react-native-link-preview": "^1.6.0",
"@gorhom/bottom-sheet": "4",
"@react-native-async-storage/async-storage": "~1.15.0",
"@react-native-community/clipboard": "^1.5.1",
"@react-native-community/hooks": "^2.8.1",
"@react-native-community/masked-view": "^0.1.11",
"@react-native-community/netinfo": "7.1.3",
"@react-native-firebase/app": "^14.5.0",
"@react-native-firebase/messaging": "^14.5.0",
"@react-native-picker/picker": "2.2.1",
"@react-navigation/core": "^6.1.1",
"@react-navigation/material-top-tabs": "^6.0.6",
"@react-navigation/native": "^6.0.6",
"@react-navigation/native-stack": "^6.2.5",
"@react-navigation/stack": "^6.1.1",
"@stomp/stompjs": "^6.1.2",
"@stripe/stripe-react-native": "0.2.3",
"expo-linking": "~3.0.0",
"expo-media-library": "~14.0.0",
"expo-notifications": "~0.14.0",
"expo-splash-screen": "~0.14.1",
"expo-status-bar": "~1.2.0",
"expo-updates": "~0.11.6",
"expo-web-browser": "~10.1.0",
"firebase": "^9.6.7",
"firebase-admin": "^10.0.0",,
"react": "17.0.1",
"react-dom": "17.0.1",
"react-native": "0.64.3",
"react-native-actionsheet": "^2.4.2",
"react-native-bottomsheet-reanimated": "^0.1.1",
"react-native-gesture-handler": "~2.1.0",
"react-native-hold-menu": "^0.1.1",
"react-native-image-crop-picker": "^0.37.2",
"react-native-image-picker": "^4.7.0",
"react-native-image-resizer": "^1.4.5",
"react-native-image-viewing": "^0.2.1",
"react-native-ionicons": "^4.x",
"react-native-keyboard-aware-scroll-view": "^0.9.5",
"react-native-linear-gradient": "^2.5.6",
"react-native-link-preview": "^1.4.2",
"react-native-pager-view": "5.4.9",
"react-native-parsed-text": "^0.0.22",
"react-native-push-notification": "^8.1.1",
"react-native-reanimated": "2.4.1",
"react-native-safe-area-context": "^3.3.2",
"react-native-screens": "~3.10.1",
"react-native-sticky-parallax-header": "^0.4.1",
"react-native-svg": "12.1.1",
"react-native-svg-charts": "^5.4.0",
"react-native-tab-view": "^3.1.1",
"react-native-unimodules": "0.12.0",
"react-native-vector-icons": "^9.0.0",
"react-native-web": "0.17.1",
"react-native-webview": "11.15.0",
"react-navigation": "^4.4.4",
"rn-fetch-blob": "^0.12.0",
"socket.io-client": "^4.4.1",
"sockjs-client": "1.4.0",
"stompjs": "2.3.3",
"text-encoding": "^0.7.0",
"url": "^0.11.0",
"watchman": "^1.0.0"
}}
I've tried changing the versions of the react-native-reanimated package but still couldn't figure out the problem.
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我自己最近也遇到了这个问题。我不完全确定为什么会发生这种情况，但您可以尝试通过反复试验找到根本原因。对我来说，我在
build文件夹中全局查找了对global.performance.now的所有引用，并在代码中注释掉了它们（它们都是 js 文件）来自build文件夹中的node_modules包）。当我尝试重新加载应用程序时，我会收到有关缺少引用或未定义变量的更详细消息（因为我评论了调用global.performance.now的行）。就我而言，它最终位于react-native包中，特别是在createPerformanceLogger.js文件。有趣的是，我能够在包中找到实际设置此对象的另一个文件 这里。因此，作为临时解决方法，我在
createPerformanceLogger.jsimport 语句中添加了require('../Core/setUpPerformance');语句。这为我解决了这个问题。显然，这不太好，因为它需要更改构建文件。我所做的是添加一个构建后步骤，以便在每次构建后以编程方式执行此操作，以避免手动执行此操作（my安装程序也使用Kotlinjs，因此我将其添加为我的gradle.build.kts文件）。无论如何，YMMV 但以这种方式确定根本原因将帮助您同时解除障碍，直到找到更长期的解决方案。值得注意的是，我最终开始在我的
package.json中使用react+react-native版本，现在是react-native包甚至没有捆绑在我的build输出中（我认为这很奇怪），但这意味着我不再需要解决方法。顺便说一句，如果您好奇，这是我的 使用react和react-native版本。I had this problem recently myself. I'm not entirely sure why this is happening but you can try to find the root cause by trial and error. For me, I did a global find of all references to
global.performance.nowin thebuildfolder and commented out all of them in the code (they were all js files fromnode_modulespackages in thebuildfolder). Once I tried to reload the app, I would get a more detailed message about a missing reference or undefined variable (since I commented the lines calling onglobal.performance.now). In my case, it ended up being located in thereact-nativepackage, specifically in thecreatePerformanceLogger.jsfile. What was interesting was that I was able to find another file in the package that actually sets up this object here.So, as a temporary workaround, I added a
require('../Core/setUpPerformance');statement in thecreatePerformanceLogger.jsimport statements. This fixed the issue for me. Obviously, this isn't pretty since it requires altering build files. What I did was add a post-build step to do this programmatically after every build in order to avoid doing this manually (my setup usesKotlinjsas well, so I added it as a post assemble step in mygradle.build.ktsfile). In any case, YMMV but determining the root cause this way will help unblock you in the meantime until finding a more long term solution.It's worth noting that I eventually started playing with
react+react-nativeversions in mypackage.jsonand now thereact-nativepackage is not even bundled in mybuildoutput (which I thought was strange), but it means that I no longer need the workaround. By the way, in case you're curious, here are myreactandreact-nativeversions used.