ASP.NET - Uncaught SyntaxError: Cannot use import statement outside a module

Question

I am trying to use the import keyword in a .jsx file in my ASP.NET MVC 5 project. I want to be able to import other React components into another React component, however, when using the import keyword, I am getting the following error:

Uncaught SyntaxError: Cannot use import statement outside a module

Below is my code:

Index.cshtml:

@{
   Layout = null;
}

<html>
<head>
    <title>Hello React</title>
</head>
<body>
    <div id="content"></div>
    <script crossorigin src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.0/umd/react.development.js"></script>
    <script crossorigin src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.0/umd/react-dom.development.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/remarkable/1.7.1/remarkable.min.js"></script>
    <script src="@Url.Content("~/Scripts/Tutorial.jsx")"></script>
</body>
</html>

Tutorial.jsx:

import Comment from '../Scripts/Comment.jsx';

class Tutorial extends React.Component {
    render() {
        return (
            <div className="commentBox">
                <h1>Homepage</h1>
                <Comment />
            </div>
        );
    }
}
ReactDOM.render(<Comment />, document.getElementById('content'));

Comment.jsx:

class Comment extends React.Component {
    render() {
        return (
            <p>I am a comment!</p>
        );
    }
}

export default Comment;

If I do not have the imports or if I add the Comment class directly inside of the Tutorial.jsx, it runs fine, but that is not what I am looking for. I want to be able to have all my components in separate .jsx files and be able to import certain components into different ones. Ideas?

EDIT: Fixed export default Comment, however error is still appearing

Could you please share the folder structure? I have been able to fix this problem in my project, would like to help if you still have this problem — Farid Huseynov

gdh gdh · Accepted Answer · 2020-06-15T03:02:35

You need to export the Comment component properly. At the moment you are doing export default Test.

class Comment extends React.Component {
    render() {
        return (
            <p>I am a comment!</p>
        );
    }
}

export default Comment; //<------- see here

ASP.NET - Uncaught SyntaxError: Cannot use import statement outside a module

2 Answers