Dynatrace React Native plugin fails with “Cannot call a class as a function” after upgrading to React Native 0.81

theahmadsami — Wed, 10 Sep 2025 21:00:07 GMT

Hi all,

I recently upgraded my project from React Native 0.72.2 to React Native 0.81.0.

With RN 0.72.2 the Dynatrace React Native plugin worked fine, but after upgrading, the app crashes immediately on startup with the following error:

Error:

Render Error Cannot call a class as a function

Source (Touchables.js:45:23):

exports.Text = (_d = class Text extends ReactNative.Text { }, _d._dtInfo = { type: Types_1.Types.Text }, _d);

Component Stack:

<Text /> Touchables.js:45 <AppText /> AppText.tsx:13 <ScrollView /> ScrollView.js:730 <ErrorFallback /> ProvidersWrapper.tsx:74 <ErrorBoundary /> react-error-boundary.js:11 <SafeAreaProvider /> SafeAreaContext.tsx:35 <Provider /> react-redux.legacy-esm.js:910 <View_withRef /> View.js:28 ...

babel.config.js

module.exports = { presets: ['module:@react-native/babel-preset'], plugins: [ [ '@babel/plugin-transform-react-jsx', { runtime: 'automatic', importSource: '@dynatrace/react-native-plugin', }, ], ['react-native-reanimated/plugin'], ], };

metro.config.js

const { getDefaultConfig, mergeConfig } = require('@react-native/metro-config'); const config = { transformer: { babelTransformerPath: require.resolve( '@dynatrace/react-native-plugin/lib/dynatrace-transformer', ), }, reporter: require('@dynatrace/react-native-plugin/lib/dynatrace-reporter'), }; module.exports = mergeConfig(getDefaultConfig(__dirname), config);

dynatrace.config.js

module.exports = { react: { debug: true, autoStart: false, errorHandler: { enabled: true, reportFatalErrorAsCrash: true, }, lifecycle: { includeUpdate: false, instrument: filename => false, }, input: { instrument: filename => true, }, }, capture: { networkRequests: true }, android: { enabled: true, config: ` dynatrace { configurations { defaultConfig { autoStart.enabled false } } } `, }, ios: { enabled: true, config: ` <key>DTXAutoStart</key> <false/> `, }, };

Re: Dynatrace React Native plugin fails with “Cannot call a class as a function” after upgrading to React Native 0.81

matthias_hochri — Fri, 12 Sep 2025 04:54:41 GMT

Hi,

We are aware of the issue. Solution is internally already working and will be released ASAP.

RN 0.81 changed the Text which is breaking the instrumentation for those parts.

topic Re: Dynatrace React Native plugin fails with “Cannot call a class as a function” after upgrading to React Native 0.81 in Open Q&A

Dynatrace React Native plugin fails with “Cannot call a class as a function” after upgrading to React Native 0.81

Re: Dynatrace React Native plugin fails with “Cannot call a class as a function” after upgrading to React Native 0.81