Javascript: imported identifier is not known when exported correctly [duplicate]

Question

I can't see why such a simple thing like exporting/importing an object/function in Js does not work as intended. Where is my error?

core.js:

import getPlugins from './plugins.js'

plugins.js:

export default () => {
  return ["blah/index.js"]
}

I always get the error:

import getPlugins from './plugins.js'
       ^^^^^^^^^^

SyntaxError: Unexpected identifier

WTF? AFAIK I am declaring the identifier here.

So I thought that exporting the default object (as function) is easy like this.

I tried everything. module.exports =, exporting named function:

module.exports = {
  getPlugins: () => {
    // ...
  }
}

Please help a JS beginner. Found no answer on all the tutorials/explains I saw - or - I didn't get it at least.