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Gecko Planned Work For 2023

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HTML

animation-composition property (1293490)
calc() support infinity and NaN constants (1830759)
Color functions: color(), lab() and lch(), oklab() and oklch() (meta 1293490)
color-gamut (1422237)
Constructable Stylesheets (meta 1520690)
Container Queries (meta 1744221)
content property support all image types including <gradient>, image-set(), url(). (1684958)
content-visibility property (meta 1660384)
:has pseudo-class (meta 418039)
:lang() pseudo-class support string-matching semantics (including * wildcards) for matching language codes and comma-separated lists of languages (1121792)
Nesting Module (1648037)
:nth-child selector supports children based on An+B rule that also matches a defined selector. See (1808229)
@page named pages with page property (1787947)
scripting media feature support (1166581)
system-color values Mark, MarkText, and ButtonBorder (1638052)
-webkit-text-security property (1826629)

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Array.fromAsync() (1795816)
Array.toReversed() .toSorted() .toSpliced() .with(), TypedArrays.toReversed() .toSorted() .with() (1811057)
CanvasRenderingContext2D.reset() (1709347)
Compression Streams API, including compress and decompress data using the gzip and deflate formats (1823619)
OffscreenCanvasRenderingContext2D.reset() (1709347)
Workers support loading ECMAScript modules. (1812591)
Worklets support import to statically import ECMAscript/JavaScript modules (1812591)
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CSSImportRule.supportsText support getting any supports() conditions specified using @import (1829590)
getAutoplayPolicy() (1773551)
getDirectory() for OPFS with File System Access API (1785123)
roundRect() (1756175)
Compression Streams (1823619)
Opaque Response Blocking (ORB, 1532642)
Response: json() static method (1758943)
URL.canParse() (1823354)
WebTransport API (1692754, 1818754, 1791835)
Window.print() print dialog on Android, to print current document (1809922)
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AV1 video codec support on Android with hardware accelerated decoding if available (1672276)
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