Opens the browser's save dialog for a CSV file, if the browser has one.
Must be called synchronously from a user gesture (a click or submit handler, before any await), or the browser refuses it.
await
File name offered in the dialog.
Object holding showSaveFilePicker; window unless a test passes one.
showSaveFilePicker
window
The dialog's promise (it rejects with an AbortError when the user cancels), or null when the browser has no save dialog.
AbortError
null
Opens the browser's save dialog for a CSV file, if the browser has one.
Must be called synchronously from a user gesture (a click or submit handler, before any
await), or the browser refuses it.