@acemir/cssom

Releases

1. 0.9.3112 Jan 2026
   Release notes2 sources agree

   Patch Changes

   • #91 e600e1d Thanks @acemir! - feat: improve RegExp and attr selectors handling

   • #89 f29c634 Thanks @acemir! - feat: improve escaped characters handling

   • #94 14bc2b6 Thanks @acemir! - feat: optimize parse validateAtRule and object lookup

   • #88 6b7eb04 Thanks @acemir! - fix: deeply nested at-rule

   Open source →
2. 0.9.3023 Dec 2025
   Release notes2 sources agree

   Patch Changes

   • #85 25f9726 Thanks @acemir! - feat: sync styleSheet.title with ownerNode.title

     • set selectorText, style and media configurable
     • improve docs and test utils

   • #81 4e349c3 Thanks @acemir! - fix: preserve context for sibling nested selectors

   • #84 84ac918 Thanks @acemir! - feat: implement CSSPropertyRule

   • #83 623e136 Thanks @acemir! - feat: improve CSSImportRule implementation

     • set CSSImportRule.styleSheet to unconstructed
     • avoid insert @import rules into a constructed stylesheet

   Open source →
3. 0.9.2910 Dec 2025
   Release notes2 sources agree

   Patch Changes

   • #77 f1e78c0 Thanks @acemir! - fix: parsing of deeply nested at-rule combinations

   Open source →
4. 0.9.287 Dec 2025
   Release notes2 sources agree

   Patch Changes

   • 3c2b77f Thanks @acemir! - fix: importRule stylesheet assign from globalObject

   Open source →
5. 0.9.277 Dec 2025
   Release notes2 sources agree

   Patch Changes

   • #72 f27c829 Thanks @acemir! - feat: enhance CSSOM setup method to create instance with globalObject support

   Open source →
6. 0.9.265 Dec 2025
   Release notes2 sources agree

   Patch Changes

   • #70 e597dfe Thanks @acemir! - fix: improve CSSStyleSheet MediaList and parser
     • CSSStyleSheet replace and replaceSync mutates cssText instead of reasign
     • CSSStyleSheet.removeRule index defaults to 0
     • set MediaList.mediaText to null empties the the list
     • MediaList.toString returns the same as MediaList.mediaText
     • CSSOM.parse initializes styleSheet.media.mediaText with the content of ownerNode media attribute when available

   Open source →
7. 0.9.254 Dec 2025
   Release notes2 sources agree

   Patch Changes

   • #66 e369d14 Thanks @Naycon! - Fix TypeError when parsing @media after nested selectors inside @layer

     When parsing CSS with nested selectors (&) followed by @media rules inside an @layer block, the parser would crash with "Cannot read properties of null (reading 'constructor')" because nestedSelectorRule.parentRule can be null when the parent context is a CSSLayerBlockRule rather than a CSSStyleRule.

   • #69 52b93c7 Thanks @acemir! - fix: auto-closing statement rules

   • #68 907a0c2 Thanks @acemir! - feat: rules interfaces and parse improvements

     • Expose CSSOM.setup method for globalObject configuration
     • Add StyleSheet missing interface properties
     • Add CSSStyleSheet constructor options and missing interface properties
     • Set cssRules readonly on CSSStylesheet and CSSGroupingRules
     • Fix CSSRule.cssText interface implementation
     • Improve pseudo-class with selectors list validations
     • Imrpove auto-close for all unclosed nested structures
     • Handle CSSLayerStatementRule inside CSSLayerBlockRule and other grouping rules
     • Handle CSSFontFaceRule, CSSKeyframeRule and CSSPageRule nesting edge cases
     • Imrpove code consistency on rules type and prototype assign

   Open source →
8. 0.9.2422 Nov 2025
   Release notes2 sources agree

   Patch Changes

   • #60 dc858f3 Thanks @acemir! - fix: ending nested rules processing and unclosed sheet edge cases

   • #62 e65434c Thanks @acemir! - fix: serialization with empty nested declarations

   • #63 f334c70 Thanks @acemir! - fix: parser improvements

     • Fix CSSScopeRule allows CSSNestedDeclarations
     • Fix mediaText setter with empty value
     • Improve performance and security on selectors validation
     • Handle escape sequences before processing special characters

   • #59 fccf639 Thanks @Xiphoseer! - feat: implement CSSStyleSheet: replaceSync, replace

   Open source →
9. 0.9.237 Nov 2025
   Release notes2 sources agree

   Patch Changes

   • #56 555f3cb Thanks @acemir! - fix: prevent adding semicolon to token if it already ends with one

   Open source →
10. 0.9.227 Nov 2025
    Release notes2 sources agree

    Patch Changes

    • #54 ddae783 Thanks @acemir! - fix: added parseError isNested argument

    Open source →
11. 0.9.217 Nov 2025
    Release notes2 sources agree

    Patch Changes

    • #52 e912362 Thanks @acemir! - feat: support CSSPageRule and implementation improvements

    Open source →
12. 0.9.205 Nov 2025
    Release notes2 sources agree

    Patch Changes

    • #51 94945d2 Thanks @acemir! - feat: support legacy CSSStyleSheet methods and improve nested selectors validation

    • #48 2548929 Thanks @acemir! - feat: support CSSScopeRule

    • #47 e2aff4e Thanks @acemir! - fix: forward rule validation

    • #50 7a127e7 Thanks @acemir! - feat: support CSSRuleList and improve selectors validation

    Open source →
13. 0.9.1920 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #45 4092150 Thanks @acemir! - fix: revert cssrule type constant as properties

    Open source →
14. 0.9.1819 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #43 374d9a5 Thanks @acemir! - feat: improve parse options
      • add opts to CSSOM.parse
      • improve insertRule and deleteRule edge cases
      • adjust @font-face cannot be nested
      • throw correct error on insertRule invalid index
      • adjust @import canonical text and layer validation
      • adjust selectorText values formatting

    Open source →
15. 0.9.1718 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #41 a48b41f Thanks @acemir! - feat: sync common rules interfaces

      • CSSRule parentRule and parentStyleSheet, are now prototype getters to be readonly according to the CSSRule interface.
      • CSSStyleRule selectorText and style are now prototype getter and setter according to the CSSStyleRule interface.
      • Added a try catch to override local CSSStyleDeclaration with the one from cssstyle when needed
      • Implemented methods and indexed getters for CSSKeyframesRule
      • Implementd errorUtils for a more organized way to handle errors

    Open source →
16. 0.9.1616 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #39 c3c8d12 Thanks @acemir! - fix: workaround for jsdom exceptions

    Open source →
17. 0.9.1516 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #37 cb267e6 Thanks @acemir! - fix: adjust DOMException errors names

    Open source →
18. 0.9.1416 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #35 e278d07 Thanks @acemir! - fix: attribute selector support

    Open source →
19. 0.9.1316 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • 9703341 Thanks @acemir! - fix: standardizes the cssText getters

    Open source →
20. 0.9.1216 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #31 5a863c0 Thanks @acemir! - fix: support namespace with filled unquoted url

    Open source →
21. 0.9.1116 Oct 2025
    Release notes2 sources agree

    Patch Changes

    • #29 be06274 Thanks @acemir! - fix: improve valid @layer name logic

    • #30 cd35009 Thanks @acemir! - feat: added support for CSSNamespaceRule

    • #27 76a68b9 Thanks @acemir! - chore: improve stylesheet insert and delete rule

    Open source →
22. 0.9.1025 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #25 8ae26ad Thanks @acemir! - chore: better parseError messages

    Open source →
23. 0.9.925 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #23 dd8f3c7 Thanks @acemir! - fix: handle newlines in the middle of selectors

    Open source →
24. 0.9.825 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #21 620ebfa Thanks @acemir! - fix: improve CSSCounterStyleRule draft processing

    Open source →
25. 0.9.725 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #19 ee897f0 Thanks @acemir! - feat: draft support for CSSCounterStyleRule

    Open source →
26. 0.9.624 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #16 cf9dc7d Thanks @acemir! - feat: improves complex selectors validation

    Open source →
27. 0.9.524 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #14 2bde3f5 Thanks @acemir! - fix: injectable errorHandler

    Open source →
28. 0.9.424 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #12 4f3abd2 Thanks @acemir! - feat: improve handling of complex selectors

    Open source →
29. 0.9.324 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • d2a81ae Thanks @acemir! - feat: support attribute selector case-insensitive flag

    Open source →
30. 0.9.224 Jul 2025
    Release notes2 sources agree

    Patch Changes

    • #8 5ea9d4f Thanks @acemir! - feat: parser improvements on selectors, declaration values and error handling

    Open source →
31. 0.9.115 Jul 2025
    Release notes

    Patch Changes

    • #7 6d14f90 Thanks @acemir! - feat: add layer() and supports() to CSSImportRule

    • #6 a6526ad Thanks @acemir! - feat: support CSSLayerStatementRule, adjust CSSLayerBlockRule and improves at-rule validation

    • #4 46a61ee Thanks @anntseng! - fix: check the priority value of the existing property

    • #3 243e8cd Thanks @DiogoDoreto! - index parameter of CSSStyleSheet.insertRule is now optional

    Open source →
    Release notes

    Patch Changes

    • #7 6d14f90 Thanks @acemir! - feat: add layer() and supports() to @import rule

    • #6 a6526ad Thanks @acemir! - feat: support CSSLayerStatementRule, adjust CSSLayerBlockRule and improves at-rule validation

    • #4 46a61ee Thanks @anntseng! - fix: check the priority value of the existing property

    • #3 243e8cd Thanks @DiogoDoreto! - index parameter of CSSStyleSheet.insertRule is now optional

    Open source →
32. 0.9.012 Jul 2025
    Release notes2 sources agree

    Changes

    • #2 64e49ef - feat: support for nested selectors, nested declarations and at-rule validations

    Open source →