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Ensure that getMainThreadWorkerMessageHandler won't accidentally break getDocument (PR 10139 follow-up)

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*This should have been part of PR 10139.*

In the event that a user has attempted to manually load the worker file on the main-thread, but somehow failed to do that correctly, there's a possibility that `getMainThreadWorkerMessageHandler` could throw. Considering how/where that helper function is being called, an error could still prevent `PDFDocumentLoadingTask` from completing (regardless if it's being resolved/rejected).
This commit is contained in:
Jonas Jenwald 2018-10-09 15:35:28 +02:00
parent f45e46d7ad
commit 0e2c6047e4
1 changed files with 6 additions and 4 deletions
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10
src/display/api.js
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@ -1358,10 +1358,12 @@ var PDFWorker = (function PDFWorkerClosure() {
} }
function getMainThreadWorkerMessageHandler() { function getMainThreadWorkerMessageHandler() {
if (typeof window === 'undefined') { try {
return null; if (typeof window !== 'undefined') {
} return (window.pdfjsWorker && window.pdfjsWorker.WorkerMessageHandler);
return (window.pdfjsWorker && window.pdfjsWorker.WorkerMessageHandler); }
} catch (ex) { }
return null;
} }
let fakeWorkerFilesLoadedCapability; let fakeWorkerFilesLoadedCapability;