fix: fix deprecation warning for load/render tasks

Author: MasterOdin

sandbox/basic/index.js

@@ -11,7 +11,9 @@ PDFJSAnnotate.StoreAdapter.getAnnotations = (documentId, pageNumber) => {
   });
 };
 
-pdfjsViewer.getDocument(DOCUMENT_ID).then((pdf) => {
+const loadingTask = pdfjsViewer.getDocument(DOCUMENT_ID);
+
+loadingTask.promise.then((pdf) => {
   Promise.all([
     pdf.getPage(1),
     PDFJSAnnotate.getAnnotations(1)

src/UI/page.js

@@ -68,7 +68,7 @@ export function renderPage(pageNumber, renderOptions) {
 
     // Render the page
     return Promise.all([
-      pdfPage.render({ canvasContext, viewport, transform }),
+      pdfPage.render({ canvasContext, viewport, transform }).promise,
       PDFJSAnnotate.render(svg, viewport, annotations)
     ]).then(() => {
       // Text content is needed for a11y, but is also necessary for creating

web/index.js

@@ -39,10 +39,13 @@ document.getElementById('content-wrapper').addEventListener('scroll', (e) => {
 });
 
 function render() {
-  pdfjsLib.getDocument({
+  const loadingTask = pdfjsLib.getDocument({
     url: RENDER_OPTIONS.documentId,
     cMapUrl: 'shared/cmaps/',
-    cMapPacked: true}).then((pdf) => {
+    cMapPacked: true
+  });
+
+  loadingTask.promise.then((pdf) => {
     RENDER_OPTIONS.pdfDocument = pdf;
 
     let viewer = document.getElementById('viewer');