How to default export from a directory in JavaScript/TypeScript-CodePudding

I have the following dir structure

- common
|
|--- Component1
|   |
|   |--- index.js
|   |--- Component1.tsx
|   |--- Component1.scss
|
|--- Component2.tsx
|

In Component1's index.js and Compoennt1.tsx I export the default

Component1/index.js

export { default as Component1 } from './Component1'

Component1/Component1.tsx

const Component1 = () => { code... }

export default Component1

and in Component2.tsx I want to import Component1.tsx through default import. However it complains 'no default export in /Component1/index'. I think the directory /Compoennt1 is exporting Component1.tsx as default, but it's not working

Component2.tsx

// doesn't work
import Component1 from './Component1'

// both works
import { Component1 } from './Component1' or
import Component1 from './Component1/Component1'

Can someone explain why I can't default export/import when it's through a folder or is this how imports/exports work?

CodePudding user response：

Here, it's a named export (named Component1), not a default export:

export { default as Component1 } from './Component1'

which is why importing it via named imports works here:

import { Component1 } from './Component1'

If you want to make it the default export for the Component1/index.js, you need

export { default as default} from './Component1'

Personally, I like to be consistent when writing code - it's nice not to have to try to recall, for every single module, "Did this module export a default or something named?" In a given project, you may find it easier to use default exports everywhere, or named exports everywhere, but not mix them.