It used to be the case that `export default` was just syntactic sugar for
exporting something with the name "default".

export default 42;

was the same as

const x = 42;
export {x as default};

More importantly this symmetry was very useful on the import side as well
as when reexporting default exports.

export {default} from './m.js'

The above line now requires a local binding.

import tmp from './m.js';
export default tmp;

I don't know why this was changed or if this was discussed anywhere?
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It used to be the case that `export default` was just syntactic sugar for
exporting something with the name "default".

```js
export default 42;
```

was the same as

```js
const x = 42;
export {x as default};
```

More importantly this symmetry was very useful on the import side as well
as when reexporting default exports.

```js
export {default} from './m.js'
```

The above line now requires a local binding.

```js
import tmp from './m.js';
export default tmp;
```

I don't know why this was changed or if this was discussed anywhere?