Need modify a javascript photo editing package to add some functionality

We need help to modify a photo editing script to add a dynamic text option.
Flow would be

Create the image
Add placeholders locations, fonts, sizes of the dynamic text
Upload a CSV with the placeholder name as the column name
Set export values (PNG, TRANSPARENT, JPG, Quality, etc)
Bulk download the images with the dynamic text inserted
Deliverables
Modification of the scrip to add the bulk dynamic text functionality.