Rule proposal: no-anonymous-default-export

[fisker]

Description

Implement a replacement rule for existing rule import/no-anonymous-default-export.

Fail

export default function () {}

export default class {}

export default () => {}

Pass

class A {}
export default A;

export default class A {};

function a {}
export default a;

export default function a {}

export default [];
export default {};
export default 1;
export default whatever;

Additional Info

For now, I only care about functions and classes, but we can check others in the future.

Maybe we can also suggest a fix based on the filename.

[fregante]

Extracted from #1089 (comment)

[fisker]

Marked as accepted.