[wp-trac] [WordPress Trac] #64015: Reconsider removal of import map polyfill

[WordPress Trac]

#64015: Reconsider removal of import map polyfill
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 Reporter:  joedolson      |       Owner:  (none)
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  Awaiting Review
Component:  Script Loader  |     Version:  6.5
 Severity:  normal         |  Resolution:
 Keywords:                 |     Focuses:  javascript
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Comment (by swissspidy):

 For this particular case, these few reports all seem to be related to iOS.
 Import maps are supported since Safari 16.4+ / iOS 16.4+ (released in
 2023), which is available for iPhone 8 or newer (released in 2017). So by
 removing the polyfill we still support 8-year old devices. I think that's
 very reasonable.

 Also noting that the usage of Safari < 16.4 on iOS is 1.3%, down from 3.6%
 when the polyfill was removed ~1 year ago.

 > Historically, our policies on front-end support have been different from
 those for admin support.

 Any documentation on that? In that case I would encourage a more general
 discussion about frontend vs backend browser suppport and documenting any
 decisions at https://make.wordpress.org/core/handbook/best-practices
 /browser-support/ and enforcing the policy accordingly through separate
 browserslist configs etc.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64015#comment:2>
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