[api-minor] Stop polyfilling structuredClone in legacy builds
#17086
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Comparing the currently supported browsers/environments, see [the FAQ](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support) and the [MDN compatibility data](https://developer.mozilla.org/en-US/docs/Web/API/structuredClone#browser_compatibility), the `structuredClone` polyfill is *only* needed in Google Chrome versions < 98. Because of some limitations in the core-js polyfill we're currently forced to special-case the `transfer` handling to prevent bugs, and it'd be nice to avoid that. Note that `structuredClone`, with transfers, is only used in two spots: - The `LoopbackPort` class, which is only used with fake workers. Given that fake workers should *never* be used in browsers, breaking that edge-case in older Google Chrome versions seem fine. - The `AnnotationStorage` class, when Stamp-annotations have been added to the document. Given that Google Chrome isn't the main focus of development, breaking *part* of the editing-functionality in older Google Chrome versions should hopefully be acceptable.
|
/botio test |
From: Bot.io (Windows)ReceivedCommand cmd_test from @Snuffleupagus received. Current queue size: 0 Live output at: http://54.193.163.58:8877/ec07744f28d6bce/output.txt |
From: Bot.io (Linux m4)ReceivedCommand cmd_test from @Snuffleupagus received. Current queue size: 0 Live output at: http://54.241.84.105:8877/6ce0d1567eb597b/output.txt |
From: Bot.io (Linux m4)FailedFull output at http://54.241.84.105:8877/6ce0d1567eb597b/output.txt Total script time: 25.04 mins
Image differences available at: http://54.241.84.105:8877/6ce0d1567eb597b/reftest-analyzer.html#web=eq.log |
From: Bot.io (Windows)FailedFull output at http://54.193.163.58:8877/ec07744f28d6bce/output.txt Total script time: 37.32 mins
Image differences available at: http://54.193.163.58:8877/ec07744f28d6bce/reftest-analyzer.html#web=eq.log |
timvandermeij
approved these changes
Oct 7, 2023
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Comparing the currently supported browsers/environments, see the FAQ and the MDN compatibility data, the
structuredClonepolyfill is only needed in Google Chrome versions < 98. Because of some limitations in the core-js polyfill we're currently forced to special-case thetransferhandling to prevent bugs, and it'd be nice to avoid that.Note that
structuredClone, with transfers, is only used in two spots:LoopbackPortclass, which is only used with fake workers. Given that fake workers should never be used in browsers, breaking that edge-case in older Google Chrome versions seem fine.AnnotationStorageclass, when Stamp-annotations have been added to the document. Given that Google Chrome isn't the main focus of development, breaking part of the editing-functionality in older Google Chrome versions should hopefully be acceptable.