The error message "com.facebook.react.common.javascriptexception: unexpected token 'export'" typically occurs in React Native applications when you use modern JavaScript features, such as export, that are not supported by the JavaScript engine running on the device or simulator.

The error indicates that the JavaScript engine encountered an "unexpected token" when parsing your code, and in this case, it's specifically referring to the export keyword.

This issue usually occurs when you're trying to use ES6/ES modules syntax in an environment that doesn't support it. To resolve this error, you need to make sure your code is transpiled to a compatible version of JavaScript that is supported by the React Native environment.

Here are some steps you can follow to address this issue:

  1. Babel Configuration: Ensure that you have Babel configured in your React Native project. Babel is a tool for transpiling modern JavaScript code into backward-compatible versions.

  2. Install Babel Presets: Make sure you have the appropriate Babel presets installed to transpile your code. For React Native, you typically need the @babel/preset-env and @babel/preset-react presets. You may also need additional presets or plugins depending on your specific code.

  3. .babelrc or babel.config.js: Create a .babelrc or babel.config.js file in the root of your project to configure Babel. For example:

    babel.config.js:

    javascript
    module.exports = { presets: ['@babel/preset-env', '@babel/preset-react'], };
  4. Use Compatible Syntax: Make sure you're using JavaScript syntax that is supported by the React Native environment. For example, instead of using export and import, you may need to use module.exports and require for module imports and exports.

    Example:

    javascript
    // Use this instead of "export default MyComponent;" module.exports = MyComponent; // Use this instead of "import MyComponent from './MyComponent';" const MyComponent = require('./MyComponent');
  5. Restart the Packager: After making changes to your Babel configuration or code, restart the React Native packager to apply the changes.

Remember that the specific configuration needed depends on your project setup and the version of React Native you're using. Always refer to the official documentation for the recommended setup and best practices for your specific React Native version.

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