Why script tag type='module' does not load my exported function?

<!DOCTYPE html>
<html>
    
    <body>
        <p id='parag' ></p>
        <p id='para' ></p>
        <script type="module" src="file2.js">
            document.getElementById('para').innerHTML = 'hello world';
            document.getElementById('parag').innerHTML = b(8,3);
            

        </script>
    </body>
</html>

file2.js :

import * as objFile1 from './file1.js';
let value = objFile1.a(5,8), value1=objFile1.b(2,5);
console.log(value,value1);
//import {a} from './file1.js';
//console.log(a(8,4));

file1.js (the one we are exporting from):

function a(x, y) { return x + y; };
const b = (w, e) => w * e;
export { a, b };