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javascript - Cannot use import statement outside a module

I'm trying to use classes in pure JavaScript, so I'm facing the error "Uncaught SyntaxError: Cannot use import statement outside a module" and can't solve it.

File1.js - Main file

import example from "./file2";

var test = new example();

File2.js - Class file

export default class example {
    constructor() {
        console.log("hello world");
    }
}
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Add files with type="module":

<script src="file1.js" type="module" ></script>

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