v1.80.6

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Command-Line Interface

• Make @parcel/watcher an optional dependency so this can still be installed
  on operating systems where it's unavailable.

v1.80.5

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Embedded Host

• Don't produce phantom @import deprecations when using an importer with the
  legacy API.

v1.80.4

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• No user-visible changes.

v1.80.3

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• Fix a bug where @import url("...") would crash in plain CSS files.

• Improve consistency of how warnings are emitted by different parts of the
  compiler. This should result in minimal user-visible changes, but different
  types of warnings should now respond more reliably to flags like --quiet,
  --verbose, and --silence-deprecation.

v1.80.2

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• Fix a bug where deprecation warnings were incorrectly emitted for the
  plain-CSS invert() function.

v1.80.1

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• Fix a bug where repeated deprecation warnings were not automatically limited.

v1.80.0

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• @import is now officially deprecated, as are global built-in functions that
  are available within built-in modules. See the Sass blog post for more
  details on the deprecation process.

Embedded Host

• Fix an error that would sometimes occur when deprecation warnings were
  emitted when using a custom importer with the legacy API.

v1.79.6

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• Fix a bug where Sass would add an extra */ after loud comments with
  whitespace after an explicit */ in the indented syntax.

• Potentially breaking bug fix: Adding text after an explicit */ in the
  indented syntax is now an error, rather than silently generating invalid CSS.

Embedded Host

• Properly export the SassBoolean type.

v1.79.5

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• Changes to how selector.unify() and @extend combine selectors:

  • The relative order of pseudo-classes (like :hover) and pseudo-elements
    (like ::before) within each original selector is now preserved when
    they're combined.

  • Pseudo selectors are now consistently placed at the end of the combined
    selector, regardless of which selector they came from. Previously, this
    reordering only applied to pseudo-selectors in the second selector.

• Tweak the color transformation matrices for OKLab and OKLCH to match the
  newer, more accurate values in the CSS spec.

• Fix a slight inaccuracy case when converting to srgb-linear and
  display-p3.

• Potentially breaking bug fix: math.unit() now wraps multiple denominator
  units in parentheses. For example, px/(em*em) instead of px/em*em.

Command-Line Interface

• Use @parcel/watcher to watch the filesystem when running from JavaScript and
  not using --poll. This should mitigate more frequent failures users have
  been seeing since version 4.0.0 of Chokidar, our previous watching tool, was
  released.

JS API

• Fix SassColor.interpolate() to allow an undefined options parameter, as
  the types indicate.

Embedded Sass

• Properly pass missing color channel values to and from custom functions.

v1.79.4

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JS API

• Fix a bug where passing green or blue to color.change() for legacy
  colors would fail.

v1.79.3

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• Update the $channel parameter in the suggested replacement for
  color.red(), color.green(), color.blue(), color.hue(),
  color.saturation(), color.lightness(), color.whiteness(), and
  color.blackness() to use a quoted string.

v1.79.2

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• Add a $space parameter to the suggested replacement for color.red(),
  color.green(), color.blue(), color.hue(), color.saturation(),
  color.lightness(), color.whiteness(), and color.blackness().

• Update deprecation warnings for the legacy JS API to include a link to
  relevant documentation.

v1.79.1

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• No user-visible changes.

v1.79.0

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• Breaking change: Passing a number with unit % to the $alpha parameter
  of color.change(), color.adjust(), change-color(), and adjust-color()
  is now interpreted as a percentage, instead of ignoring the unit. For example,
  color.change(red, $alpha: 50%) now returns rgb(255 0 0 / 0.5).

• Potentially breaking compatibility fix: Sass no longer rounds RGB channels
  to the nearest integer. This means that, for example, rgb(0 0 1) != rgb(0 0 0.6). This matches the latest version of the CSS spec and browser behavior.

• Potentially breaking compatibility fix: Passing large positive or negative
  values to color.adjust() can now cause a color's channels to go outside that
  color's gamut. In most cases this will currently be clipped by the browser and
  end up showing the same color as before, but once browsers implement gamut
  mapping it may produce a different result.

• Add support for CSS Color Level 4 color spaces. Each color value now tracks
  its color space along with the values of each channel in that color space.
  There are two general principles to keep in mind when dealing with new color
  spaces:

  1. With the exception of legacy color spaces (rgb, hsl, and hwb), colors
     will always be emitted in the color space they were defined in unless
     they're explicitly converted.

  2. The color.to-space() function is the only way to convert a color to
     another color space. Some built-in functions may do operations in a
     different color space, but they'll always convert back to the original space
     afterwards.

• rgb colors can now have non-integer channels and channels outside the normal
  gamut of 0-255. These colors are always emitted using the rgb() syntax so
  that modern browsers that are being displayed on wide-gamut devices can
  display the most accurate color possible.

• Add support for all the new color syntax defined in Color Level 4, including:

  • oklab(), oklch(), lab(), and lch() functions;
  • a top-level hwb() function that matches the space-separated CSS syntax;
  • and a color() function that supports the srgb, srgb-linear,
    display-p3, a98-rgb, prophoto-rgb, rec2020, xyz, xyz-d50, and
    xyz-d65 color spaces.

• Add new functions for working with color spaces:

  • color.to-space($color, $space) converts $color to the given $space. In
    most cases this conversion is lossless—the color may end up out-of-gamut for
    the destination color space, but browsers will generally display it as best
    they can regardless. However, the hsl and hwb spaces can't represent
    out-of-gamut colors and so will be clamped.

  • color.channel($color, $channel, $space: null) returns the value of the
    given $channel in $color, after converting it to $space if necessary.
    It should be used instead of the old channel-specific functions such as
    color.red() and color.hue().

  • color.same($color1, $color2) returns whether two colors represent the same
    color even across color spaces. It differs from $color1 == $color2 because
    == never consider colors in different (non-legacy) spaces as equal.

  • color.is-in-gamut($color, $space: null) returns whether $color is
    in-gamut for its color space (or $space if it's passed).

  • color.to-gamut($color, $space: null) returns $color constrained to its
    space's gamut (or to $space's gamut, if passed). This is generally not
    recommended since even older browsers will display out-of-gamut colors as
    best they can, but it may be necessary in some cases.

  • color.space($color): Returns the name of $color's color space.

  • color.is-legacy($color): Returns whether $color is in a legacy color
    space (rgb, hsl, or hwb).

  • color.is-powerless($color, $channel, $space: null): Returns whether the
    given $channel of $color is powerless in $space (or its own color
    space). A channel is "powerless" if its value doesn't affect the way the
    color is displayed, such as hue for a color with 0 chroma.

  • color.is-missing($color, $channel): Returns whether $channel's value is
    missing in $color. Missing channels can be explicitly specified using the
    special value none and can appear automatically when color.to-space()
    returns a color with a powerless channel. Missing channels are usually
    treated as 0, except when interpolating between two colors and in
    color.mix() where they're treated as the same value as the other color.

• Update existing functions to support color spaces:

  • hsl() and color.hwb() no longer forbid out-of-bounds values. Instead,
    they follow the CSS spec by clamping them to within the allowed range.

  • color.change(), color.adjust(), and color.scale() now support all
    channels of all color spaces. However, if you want to modify a channel
    that's not in $color's own color space, you have to explicitly specify the
    space with the $space parameter. (For backwards-compatibility, this
    doesn't apply to legacy channels of legacy colors—for example, you can still
    adjust an rgb color's saturation without passing $space: hsl).

  • color.mix() and color.invert() now support the standard CSS algorithm
    for interpolating between two colors (the same one that's used for gradients
    and animations). To use this, pass the color space to use for interpolation
    to the $method parameter. For polar color spaces like hsl and oklch,
    this parameter also allows you to specify how hue interpolation is handled.

  • color.complement() now supports a $space parameter that indicates which
    color space should be used to take the complement.

  • color.grayscale() now operates in the oklch space for non-legacy colors.

  • color.ie-hex-str() now automatically converts its color to the rgb space
    and gamut-maps it so that it can continue to take colors from any color
    space.

• The following functions are now deprecated, and uses should be replaced with
  the new color-space-aware functions defined above:

  • The color.red(), color.green(), color.blue(), color.hue(),
    color.saturation(), color.lightness(), color.whiteness(), and
    color.blackness() functions, as well as their global counterparts, should
    be replaced with calls to color.channel().

  • The global adjust-hue(), saturate(), desaturate(), lighten(),
    darken(), transaprentize(), fade-out(), opacify(), and fade-in()
    functions should be replaced by color.adjust() or color.scale().

• Add a global-builtin future deprecation, which can be opted-into with the
  --future-deprecation flag or the futureDeprecations option in the JS or
  Dart API. This emits warnings when any global built-in functions that are
  now available in sass: modules are called. It will become active by default
  in an upcoming release alongside the @import deprecation.

Dart API

• Added a ColorSpace class which represents the various color spaces defined
  in the CSS spec.

• Added SassColor.space which returns a color's color space.

• Added SassColor.channels and .channelsOrNull which returns a list
  of channel values, with missing channels converted to 0 or exposed as null,
  respectively.

• Added SassColor.isLegacy, .isInGamut, .channel(), .isChannelMissing(),
  .isChannelPowerless(), .toSpace(), .toGamut(), .changeChannels(), and
  .interpolate() which do the same thing as the Sass functions of the
  corresponding names.

• SassColor.rgb() now allows out-of-bounds and non-integer arguments.

• SassColor.hsl() and .hwb() now allow out-of-bounds arguments.

• Added SassColor.hwb(), .srgb(), .srgbLinear(), .displayP3(),
  .a98Rgb(), .prophotoRgb(), .rec2020(), .xyzD50(), .xyzD65(),
  .lab(), .lch(), .oklab(), .oklch(), and .forSpace() constructors.

• Deprecated SassColor.red, .green, .blue, .hue, .saturation,
  .lightness, .whiteness, and .blackness in favor of
  SassColor.channel().

• Deprecated SassColor.changeRgb(), .changeHsl(), and .changeHwb() in
  favor of SassColor.changeChannels().

• Added SassNumber.convertValueToUnit() as a shorthand for
  SassNumber.convertValue() with a single numerator.

• Added InterpolationMethod and HueInterpolationMethod which collectively
  represent the method to use to interpolate two colors.

JS API

• While the legacy API has been deprecated since we released the modern API, we
  now emit warnings when the legacy API is used to make sure users are aware
  that it will be removed in Dart Sass 2.0.0. In the meantime, you can silence
  these warnings by passing legacy-js-api in silenceDeprecations when using
  the legacy API.

• Modify SassColor to accept a new space option, with support for all the
  new color spaces defined in Color Level 4.

• Add SassColor.space which returns a color's color space.

• Add SassColor.channels and .channelsOrNull which returns a list of channel
  values, with missing channels converted to 0 or exposed as null, respectively.

• Add SassColor.isLegacy, .isInGamut(), .channel(), .isChannelMissing(),
  .isChannelPowerless(), .toSpace(), .toGamut(), .change(), and
  .interpolate() which do the same thing as the Sass functions of the
  corresponding names.

• Deprecate SassColor.red, .green, .blue, .hue, .saturation,
  .lightness, .whiteness, and .blackness in favor of
  SassColor.channel().

Embedded Sass

• Add Color SassScript value, with support for all the new color spaces
  defined in Color Level 4.

• Remove RgbColor, HslColor and HwbColor SassScript values.

v1.78.0

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• The meta.feature-exists function is now deprecated. This deprecation is
  named feature-exists.

• Fix a crash when using @at-root without any queries or children in the
  indented syntax.

JS API

• Backport the deprecation options (fatalDeprecations, futureDeprecations,
  and silenceDeprecations) to the legacy JS API. The legacy JS API is itself
  deprecated, and you should move off of it if possible, but this will allow
  users of bundlers and other tools that are still using the legacy API to
  still control deprecation warnings.

• Fix a bug where accessing SourceSpan.url would crash when a relative URL was
  passed to the Sass API.

Embedded Sass

• Explicitly expose a sass executable from the sass-embedded npm package.
  This was intended to be included in 1.63.0, but due to the way
  platform-specific dependency executables are installed it did not work as
  intended. Now users can run npx sass for local installs or just sass when
  sass-embedded is installed globally.

• Add linux-riscv64, linux-musl-riscv64, and android-riscv64 support for the
  sass-embedded npm package.

• Fix an edge case where the Dart VM could hang when shutting down when requests
  were in flight.

• Fix a race condition where the embedded host could fail to shut down if it was
  closed around the same time a new compilation was started.

• Fix a bug where parse-time deprecation warnings could not be controlled by
  the deprecation options in some circumstances.