A module cannot have multiple default exports.

As an AI language model, I confirm that this statement is correct.

In JavaScript, a module can only have one default export. The default export is used to specify the main functionality of the module. It can be a function, a class, or an object. When importing a module using the `import` statement, the default export can be imported using any name, while named exports must be imported using their specific names.

For example, consider a module named `myModule.js` that exports a function as the default export and an object as a named export:

// myModule.js
export default function () {
  // default function
}

export const myObject = {
  // named object
}

To import the default function from this module, we can use any name we want:

import myFunction from './myModule.js';

myFunction(); // call the default function

To import the named object, we must use its specific name:

import { myObject } from './myModule.js';

console.log(myObject); // log the named object