ReactJS: “Uncaught SyntaxError: Unexpected token <"
If you have been working with ReactJS, you might have encountered the error message “Uncaught SyntaxError: Unexpected token <“. This error typically occurs when there is an issue with the way you are importing or using React components in your code.
There are a few common reasons why you might be seeing this error:
1. Incorrect Import Statement
One possible reason for this error is an incorrect import statement for your React component. Make sure that you are using the correct syntax to import your components.
Example:
import React from 'react';
import MyComponent from './MyComponent'; // Make sure the path to your component is correct
const App = () => {
return (
);
};
export default App;
2. Missing or Incorrect Babel Configuration
If you are using JSX syntax in your React components, you need to make sure that you have the necessary Babel configuration set up. JSX is not valid JavaScript, so it needs to be transpiled to regular JavaScript using Babel.
Make sure that you have the following dependencies installed:
"@babel/core": "^7.0.0",
"@babel/preset-react": "^7.0.0",
"babel-loader": "^8.0.0"
And configure your webpack.config.js file as follows:
module: {
rules: [
{
test: /.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
options: {
presets: ['@babel/preset-react']
}
}
}
]
}
3. Incorrect File Extension
Ensure that your file extension is correct for your React components. React components should have a .jsx extension, not .js.
Example:
// Correct
MyComponent.jsx
// Incorrect
MyComponent.js
By checking and addressing these common issues, you should be able to resolve the “Uncaught SyntaxError: Unexpected token <” error in your ReactJS application.
If you are still experiencing issues, it may be helpful to review your code for any other syntax errors or consult the ReactJS documentation for further guidance.
Leave a Reply