From ff9d2b2ab15ebc7c315c61604ac7349e4e0695fe Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Wed, 20 Oct 2021 15:55:14 +0200
Subject: [PATCH] Prevent run-time errors in Node.js versions with
`URL.createObjectURL` support (issue 14170)
Apparently Node.js has added *global* `URL.createObjectURL` support, but not done the same thing for `Blob`. Hence we also need to check for the availability of `Blob` in the `createObjectURL` helper function, and it's probably a good idea to also update `examples/node/pdf2svg.js` to work-around this until these changes reach an official PDF.js release.
---
examples/node/pdf2svg.js | 6 +++++-
src/shared/util.js | 2 +-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/examples/node/pdf2svg.js b/examples/node/pdf2svg.js
index 51ef8969a..11d4d1101 100644
--- a/examples/node/pdf2svg.js
+++ b/examples/node/pdf2svg.js
@@ -110,7 +110,11 @@ const loadingTask = pdfjsLib.getDocument({
console.log();
const opList = await page.getOperatorList();
- const svgGfx = new pdfjsLib.SVGGraphics(page.commonObjs, page.objs);
+ const svgGfx = new pdfjsLib.SVGGraphics(
+ page.commonObjs,
+ page.objs,
+ /* forceDataSchema = */ true
+ );
svgGfx.embedFonts = true;
const svg = await svgGfx.getSVG(opList, viewport);
await writeSvgToFile(svg, getFilePathForPage(pageNum));
diff --git a/src/shared/util.js b/src/shared/util.js
index d3e43a157..8606da3ca 100644
--- a/src/shared/util.js
+++ b/src/shared/util.js
@@ -1030,7 +1030,7 @@ function createPromiseCapability() {
}
function createObjectURL(data, contentType = "", forceDataSchema = false) {
- if (URL.createObjectURL && !forceDataSchema) {
+ if (URL.createObjectURL && typeof Blob !== "undefined" && !forceDataSchema) {
return URL.createObjectURL(new Blob([data], { type: contentType }));
}
// Blob/createObjectURL is not available, falling back to data schema.