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FF150 Relnote: CSSFontFaceDescriptors#43621

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chrisdavidmills merged 4 commits intomdn:mainfrom
hamishwillee:ff150_cssfontfacedescriptors
Apr 17, 2026
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FF150 Relnote: CSSFontFaceDescriptors#43621
chrisdavidmills merged 4 commits intomdn:mainfrom
hamishwillee:ff150_cssfontfacedescriptors

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@hamishwillee hamishwillee commented Mar 30, 2026 •
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FF150 adds support for CSSFontFaceRule.style being a CSSFontFaceDescriptors. This adds a release note and minor updates to docs.

  • Release note
  • CSSFontFaceRule - make into live example

Related docs work can be tracked in #43564

@github-actions github-actions bot added Content:WebAPI Web API docs size/s [PR only] 6-50 LoC changed labels Mar 30, 2026
@hamishwillee hamishwillee mentioned this pull request Mar 30, 2026
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github-actions bot commented Mar 30, 2026 •
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Preview URLs (3 pages)

External URLs (1)

URL: /en-US/docs/Mozilla/Firefox/Releases/150
Title: Firefox 150 release notes for developers (Beta)

(comment last updated: 2026-04-17 04:10:04)

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github-actions bot commented Mar 31, 2026

This pull request has merge conflicts that must be resolved before it can be merged.

@github-actions github-actions bot added Content:Firefox Content in the Mozilla/Firefox subtree merge conflicts 🚧 [PR only] labels Mar 31, 2026
@hamishwillee hamishwillee force-pushed the ff150_cssfontfacedescriptors branch from 07532be to c7c510a Compare March 31, 2026 05:18
@github-actions github-actions bot removed the merge conflicts 🚧 [PR only] label Mar 31, 2026
@hamishwillee hamishwillee marked this pull request as ready for review March 31, 2026 05:19
@hamishwillee hamishwillee requested review from a team as code owners March 31, 2026 05:19
@hamishwillee hamishwillee requested review from chrisdavidmills and pepelsbey and removed request for a team March 31, 2026 05:19
@github-actions github-actions bot added size/m [PR only] 51-500 LoC changed and removed size/s [PR only] 6-50 LoC changed labels Mar 31, 2026
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@hamishwillee couple of bits for you to look at.

Comment thread files/en-us/web/api/cssfontfacerule/index.md Outdated
Comment thread files/en-us/web/api/cssfontfacerule/index.md
#### Result

{{EmbedLiveSample("Accessing @font-face properties", "100%", "250px")}}

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The live example looks fine. Just one thing — in the BCD table, what I assume is the enrty for this change is worded as "Type changed to CSSFontFaceDescriptors". It doesn't say supported by Fx150 yet, and the wording itself is a bit confusing because it implies that the interface's type property will return CSSFontFaceDescriptors, but actually it is the style property that will return that. It would be less confusing if it were phrased something like "style returns a CSSFontFaceDescriptors object."

I understand you are working on this, but I'm flagging it anyway just in case.

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@hamishwillee hamishwillee Apr 6, 2026

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@chrisdavidmills Thanks for the review. I've taken most suggestions. Also updated the style page too to make it a live example.

I don't plan to do anything about this, because it is a BCD issue.

  1. The table has since updated so it does say FF150
  2. The "Type changed to" is nested under style, and that is shown visually. I don't disagree that it isn't hugely obvious, but that's out of scope for me there.
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OK, fair enough.

@pepelsbey pepelsbey removed their request for review March 31, 2026 12:00
@hamishwillee hamishwillee force-pushed the ff150_cssfontfacedescriptors branch from 43ce0b5 to 4ba3051 Compare April 6, 2026 01:08
@hamishwillee hamishwillee force-pushed the ff150_cssfontfacedescriptors branch from 7a4ad8b to 08602f0 Compare April 13, 2026 05:27
@hamishwillee hamishwillee force-pushed the ff150_cssfontfacedescriptors branch from 08602f0 to 007983c Compare April 17, 2026 04:08
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hamishwillee commented Apr 17, 2026

@chrisdavidmills Can you look at this again please.

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chrisdavidmills approved these changes Apr 17, 2026
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@hamishwillee, this is looking GTG. Merging!

@chrisdavidmills chrisdavidmills merged commit 4fb9722 into mdn:main Apr 17, 2026
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