find if a declaration is used by next/dynamic imports

[Powerplex]

I'm using ts-morph to make a script that list all declarations that should be removed from a codebase (dead code).

It's considering as "dead code" many declarations that are imported using next/dynamic imports, which look like this:

import dynamic from 'next/dynamic'

const PhoneModal = dynamic(
  () => import(/* webpackChunkName: "PhoneModal" */ './PhoneModal')
)

Is there a way, from a declaration, to detect if it's used by such a dynamic import, right now I check each declaration node like this:

function isReferencedInAnotherFile(node) {
  if (!Node.isReferenceFindable(node)) return false
  const file = node.getSourceFile()
  return !!node.findReferencesAsNodes().find((n) => {
    return n.getSourceFile() !== file
  })
}

So "check if this node is used in any other file than the one it's exported from". But findReferencesAsNodes() does not consider dynamic imports as references, obviously.