This module provides a function that acts identical to "drupal_add_js()" but will be stored in a session instead and be executed on the next page request (init).
This module is a Drupal Library implementation for the PHPWkHtmlToPdf wrapper and as a result is extremely small because it uses WkHtmlToPdf to do the heavy work.
After lots of frustration and not-close-enough results with other HTML to PDF modules & libraries, I decided to make a Drupal implementation of something I know works extremely well.
This is intended for module developers, nothing is usable from the front-end.