3D FlipBook - update lib pdf.js

Hi, how can I update pdf.js library to version 2.0.943, because there is XSS vulnerability in the current version (1.7.225) https://snyk.io/test/npm/pdfjs-dist/1.7.225 When I upgrade to version 2.0.943 I get the error (_libs.PDFJS is undefined) in the 3dbookflip.min.js file. http://i.sx6.ru/img/202012042uXmL1GVz9.png