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Merge pull request #11799 from Snuffleupagus/allSettled

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Fail early, in modern `GENERIC` builds, if certain required browser functionality is missing (PR 11771 follow-up)
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Tim van der Meij 2020-04-11 16:02:19 +02:00 committed by GitHub
commit 71d16686e4
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1 changed files with 5 additions and 3 deletions
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8
src/core/worker.js
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@ -140,14 +140,16 @@ var WorkerMessageHandler = {
// Ensure that (primarily) Node.js users won't accidentally attempt to use
// a non-translated/non-polyfilled build of the library, since that would
// quickly fail anyway because of missing functionality (such as e.g.
// `ReadableStream).
// `ReadableStream` and `Promise.allSettled`).
if (
(typeof PDFJSDev === "undefined" || PDFJSDev.test("SKIP_BABEL")) &&
typeof ReadableStream === "undefined"
(typeof ReadableStream === "undefined" ||
typeof Promise.allSettled === "undefined")
) {
throw new Error(
"The browser/environment lacks native support for critical " +
"functionality used by the PDF.js library (e.g. `ReadableStream`); " +
"functionality used by the PDF.js library (e.g. " +
"`ReadableStream` and/or `Promise.allSettled`); " +
"please use an ES5-compatible build instead."
);
}