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[api-minor] Update the minimum supported browsers/environments

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*Please note:* The dates below are still a little ways off, however that obviously won't affect the existing PDF.js releases. Hence I think that we can make these changes now, since by the time of the *next* official PDF.js release they'll likely match up pretty well.[1]

While we "support" some (by now) fairly old browsers, that essentially means that the library (and viewer) will load and that the basic functionality will work as intended.[2]
However, in older browsers, some functionality may not be available and generally we'll ask users to update to a modern browser when bugs (specific to old browsers) are reported.[3]

Since we've previously settled on only supporting browsers/environments that are approximately *three years old*, this patch updates the minimum supported browsers/environments as follows:
 - Chrome 76, which was released on 2019-07-30; see https://en.wikipedia.org/wiki/Google_Chrome_version_history
 - Firefox ESR (as before); see https://wiki.mozilla.org/Release_Management/Calendar
 - Safari 13, which was released on 2019-09-19; see https://en.wikipedia.org/wiki/Safari_version_history#Safari_13
 - Node.js 14, which was release on 2020-04-21 (all older versions have reached EOL); see https://en.wikipedia.org/wiki/Node.js#Releases

---
[1] Given that the releases usually happen every two to three months.

[2] Assuming that a `legacy/`-build is being used, of course.

[3] In general it's never a good idea to use old/outdated browsers, since those may contain *known* security vulnerabilities.
This commit is contained in:
Jonas Jenwald 2022-06-11 16:34:07 +02:00
parent d7122becaf
commit 2f0ed3a9ca
2 changed files with 3 additions and 18 deletions
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15
src/shared/compatibility.js
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@ -55,21 +55,6 @@ if (
);
})();
// Provides support for *recent* additions to the Promise specification,
// however basic Promise support is assumed to be available natively.
// Support: Firefox<71, Chrome<76, Safari<13, Node.js<12.9.0
(function checkPromise() {
if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("IMAGE_DECODERS")) {
// The current image decoders are synchronous, hence `Promise` shouldn't
// need to be polyfilled for the IMAGE_DECODERS build target.
return;
}
if (globalThis.Promise.allSettled) {
return;
}
globalThis.Promise = require("core-js/es/promise/index.js");
})();
// Support: Node.js
(function checkReadableStream() {
if (globalThis.ReadableStream || !isNodeJS) {