cssstyle

• Fixed getPropertyPriority() often not returning the correct priority.
• Fixed preservation of case-sensitive value within CSS functions, e.g., path("m 5,5 h 35 L 20,30 z")

• Significant changes to the supported list of CSS properties to match the latest CSS specifications:
  • Many new ones are added, with generic processing.
  • The following are added with special processing: border-block-end-color, border-block-start-color, border-inline-end-color, border-inline-start-color, text-emphasis-color.
  • The following nonstandard properties are deleted: -webkit-background-composite, -webkit-border-after, -webkit-border-after-color, -webkit-border-after-style, -webkit-border-after-width, -webkit-border-before, -webkit-border-before-color, -webkit-border-before-style, -webkit-border-before-width, -webkit-border-end, -webkit-border-end-color, -webkit-border-end-style, -webkit-border-end-width, -webkit-border-fit, -webkit-border-horizontal-spacing, -webkit-border-start, -webkit-border-start-color, -webkit-border-start-style, -webkit-border-start-width, -webkit-border-vertical-spacing, -webkit-color-correction, -webkit-column-axis, -webkit-column-break-after, -webkit-column-break-before, -webkit-column-break-inside, -webkit-column-rule-color, -webkit-flex-align, -webkit-flex-item-align, -webkit-flex-line-pack, -webkit-flex-order, -webkit-flex-pack, -webkit-font-size-delta, -webkit-font-smoothing, -webkit-highlight, -webkit-hyphenate-limit-after, -webkit-hyphenate-limit-before, -webkit-locale, -webkit-logical-height, -webkit-logical-width, -webkit-margin-after, -webkit-margin-after-collapse, -webkit-margin-before, -webkit-margin-before-collapse, -webkit-margin-bottom-collapse, -webkit-margin-collapse, -webkit-margin-end, -webkit-margin-start, -webkit-margin-top-collapse, -webkit-marquee, -webkit-marquee-direction, -webkit-marquee-increment, -webkit-marquee-repetition, -webkit-marquee-speed, -webkit-marquee-style, -webkit-mask-attachment, -webkit-mask-position-x, -webkit-mask-position-y, -webkit-mask-repeat-x, -webkit-mask-repeat-y, -webkit-match-nearest-mail-blockquote-color, -webkit-max-logical-height, -webkit-max-logical-width, -webkit-min-logical-height, -webkit-min-logical-width, -webkit-nbsp-mode, -webkit-overflow-scrolling, -webkit-padding-after, -webkit-padding-before, -webkit-padding-end, -webkit-padding-start, -webkit-perspective-origin-x, -webkit-perspective-origin-y, -webkit-region-break-after, -webkit-region-break-before, -webkit-region-break-inside, -webkit-region-overflow, -webkit-rtl-ordering, -webkit-svg-shadow, -webkit-tap-highlight-color, -webkit-text-decorations-in-effect, -webkit-text-emphasis-color, -webkit-text-security, -webkit-transform-origin-x, -webkit-transform-origin-y, -webkit-transform-origin-z, -webkit-user-drag, -webkit-user-modify, -webkit-wrap, -webkit-wrap-margin, -webkit-wrap-padding, -webkit-wrap-shape-inside, -webkit-wrap-shape-outside, -webkit-zoom, color-profile, color-rendering, enable-background, glyph-orientation-horizontal, kerning, marker-offset, marks, size, src, text-line-through, text-line-through-color, text-line-through-mode, text-line-through-style, text-line-through-width, text-overline, text-overline-color, text-overline-mode, text-overline-style, text-overline-width, text-underline, text-underline-color, text-underline-mode, text-underline-style, text-underline-width, unicode-range.
• Replaced the propertyList export, which was an object, with the propertyDefinitions export, which is a Map containing similar information. (However, the extended property is removed from the values of the Map.)
• Improved generic parsing and serialization spec conformance, i.e. the code path used for non-special-cased CSS properties. (Notably including better case-sensitivity handling, which regressed in v5.3.6; see #303.)
• Updated the CSSStyleDeclaration class:
  • Removed the length setter.
  • Stopped attempting to "hide" underscored properties by making them non-enumerable.
• Various performance improvements.

• Fixed assigning non-string values to CSS properties to properly convert to strings.
• Fixed negative values for the top property being treated as invalid. (This regressed in v5.3.6.)

• Improved performance, notably by introducing a CSS parsing and validation cache.
• Lots of internal refactoring to use more canonical sources of CSS data, e.g., around shorthands and property parsing grammars, instead of hand-rolled parsers. This fixed a few small bugs visible in web platform tests.

• Updated dependencies. This fixed some subtle issues regarding, e.g., relative colors with calc(), or the syntax of the clip property.

• Improved performance when calling the cssText setter.

• Fix the parsing of colors inside the border-related shorthand properties, i.e. border, border-top, border-bottom, border-left, border-right.

• Fix the cssText setter to discard invalid declarations.

• Fix parsing flex-basis in shorthand flex when it is not an explicit value or dimension, e.g., flex: 0 0 auto.

Modify parsers to be AST-based

• Improve internal processing by switching from regular expression matching to AST-based parsing.
• Improve getter and setter of cssText.
• Improve serialization of border, flex, margin, and padding shorthands.
• Add propertyList export that lists the supported properties and their data. (This will eventually be used in jsdom, but it is still experimental.)

• Fix a regression in v5.2.0 where the generated files used \ in require() calls, which was very broken.

• Change the parser used for the cssText setter from rrweb-cssom to css-tree.

• Implement full display property parsing and serialization

The minimum supported Node.js version is now v20.

• Fix !important with custom properties. (This regressed in v4.4.0.)
• Lots of improvements to background-related property parsing and serialization.

• Add some missing system colors.
• Add generic() font-family keyword support.
• Fix system color serialization to be in lowercase.
• Fix negative margin parsing.
• Fix various case-insensitive testing and lowercasing to use ASCII, instead of Unicode.

• Update font-family parsing and serialization, and font shorthand parsing, to be spec-compliant.
• Fix some regressions in v4.4.0 related to using var() inside background-* properties.

• The cssText getter now returns the empty string if the computed flag is set.
• The cssText setter, and the removeProperty() and setProperty() methods, now throw if the readonly flag is set.
• The parentRule getter now returns the parent CSSRule instead of always returning null.
• The item() method now throws if no argument is given.
• Add camel-cased and Pascal-cased versions of WebKit properties, and fixed the raw properties to have a leading hyphen.
• Make internal properties non-enumerable to hide them better.
• Individual CSS property setters now handle invalid inputs better.
• Implement unset support.
• Update the property list to be based on the latest specs, in particular removing the deprecated azumith property and some deprecated WebKit properties.

• Improve url() parsing and serialization (#194)
• Update @asamuzakjp/css-color to improve calc() serialization (#192)

• Improve background-image parsing (#186)
• Improve border-color parsing (#185)
• Improve top/left/bottom/right to support the auto keyword (#178)
• Update @asamuzakjp/css-color to improve color parsing (#188)

Update rrweb-cssom dependency.

• Improve color support with the @asamuzakjp/css-color package (#171)
• Support nested var() and nested calc() (#179)

• Add calc() support for margin and padding properties. (#175)
• Update list of supported properties.
• Update rrweb-cssom.

• Re-added the performance fix that was supposed to appear in v4.0.0, but was accidentally un-done in another commit in that release. (#170)

• Require Node.js ≥ 18
• Handle margin and padding, and their sub-properties like marginTop, better, especially when set to the empty string or null. (#162, #165)
• Fix HSL to RGB conversion. (#159)
• Performance improvements by avoiding access to the expensive cssText property. (#164)
• No longer call the onChange callback when the serialized property value does not change. (#147)

• Require Node.js ≥14
• Use rrweb-cssom, a maintained fork of cssom (closes #153)
• Update list of supported properties

• Add support for un-computed calc() values

• Add basic support for CSS custom properties

• Reduce package size.
  • was 151.1 kB / 1.5 MB ... now 30.0 kB (packed) / 174.4 kB (unpacked)
• Add support for ch unit.
• Fix color with decimal alpha values.
• Convert hsl / hsla to rgb / rgba to match current browser behavior.

• Add support to hex alpha transparency (#rgba)
• Fix font size declaration not checking for invalid value
• Upgrade all dependencies
• Migrate nodeunit -> jest
• Add codedov integration

• Add missing valid color refs 'transparent' and 'currentcolor'

• Test node versions 6, 8, 10, and 11 in CI
• Remove comma dangle which breaks legacy (Node 6) apps

• Added new script to download CSS properties from W3C standard
• All modern (non-WD and non-FPWD) CSS properties are handled
• Add flex related styles
• Support for hsl and modern colors is added
• A function redeclaration bug is fixed
• All properties not handled by the library now fallback to a simple read/write behavior (to be improved in the future)
• As a follow-up, properties that already had a simple read/write behavior are now handled by the fallback code
• Add travis CI integration with GitHub
• Add lint CI

This release includes a few minor bug fixes, but more importantly marks the beginning of semantic versioning for this package.

Moving forward, developers can expect semver compatibility. No breaking changes will be introduced as patches, etc.

More information can be found at semver.

Version 0.3.0 marks the change in ownership of this package. I have already merged a few outstanding pull requests will continue to do so. Pull requests are welcome from the community.