Ignore mouse event if pdfViewer isn't loaded Prevents "Uncaught TypeError: Cannot read property 'isInPresentationMode' of null" on mouse scroll
Ignore mouse event if pdfViewer isn't loaded
Prevents "Uncaught TypeError: Cannot read property 'isInPresentationMode' of null" on mouse scroll

legalthings/pdf.js-viewer,legalthings/pdf.js-viewer,legalthings/pdf.js-viewer