Export Button fetchRelatedRecords

[Masoodt]

In last update fetchRelatedRecords is using Javascript Set to make ids unique, but to converting it back to Array it has got a .slice() , so it's causing an error, because Set has no slice function
here is my suggested code: ExportButton.js
//old Code:
var ids = new Set(sanitizedData).slice();
// new Code
var ids = Array.from(new Set(sanitizedData))

[fzaninotto]

Confirmed, TypeScript compiles [...new Set(foo)] to (new Set(foo)).slice(), which fails. It's weird because with modern ES, without transpilation, it works:

> const b = new Set([1, 2, 2, 3])
undefined
> b
Set { 1, 2, 3 }
> [...b]
[ 1, 2, 3 ]
> b.slice()
TypeError: b.slice is not a function