How to patch frappe.data_import.DataExporter?

Hi, I want override function: make_dialog in d:\frappe\frappe-bench\apps\frappe\frappe\public\js\frappe\data_import\data_exporter.js,
I found this file only run when we click Export button. so define app_include_js in hooks.py not worked cause frappe.data_import.DataExporter is not undefined at that time.
so is there any way to deal it?
Thanks a lot!!!