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Improve classList and dataset correctness and performance - #731

Merged

andrewiggins merged 16 commits into

mainfrom

pr-658-followups

Oct 2, 2026

Merged

Improve classList and dataset correctness and performance#731
andrewiggins merged 16 commits into
mainfrom
pr-658-followups

Commits on Sep 30, 2026
- Fix dataset attribute precedence over inherited members
  andrewiggins
  committed
  7182dcc
- Parse classList as an ordered set of ASCII-whitespace tokens
  andrewiggins
  committed
  18ee0a4
- Validate classList mutation tokens before updating attributes
  andrewiggins
  committed
  c7ab16c
- Enforce dataset property names and preserve Unicode casing
  andrewiggins
  committed
  82c075e
- Reduce classList validation allocations
  andrewiggins
  committed
  d1a9e39
- Extract DOMTokenList and DOMStringMap implementations
  andrewiggins
  committed
  163e3fa
- Reuse canonical property index parsing in DOMTokenList
  andrewiggins
  committed
  cd7dd30
- Cover DOM whitespace and Unicode dataset name boundaries
  andrewiggins
  committed
  02a9386
- Preserve absent class attributes when removing classList tokens
  andrewiggins
  committed
  f5e3060
- Cache parsed DOMTokenList tokens by raw class value
  andrewiggins
  committed
  6c8f3d7
- Retain parsed DOMTokenList results through mutation writes
  andrewiggins
  committed
  671767b
- Reduce DOMTokenList mutation allocations with common-case fast paths
  andrewiggins
  committed
  30384dd
- Register WPT coverage for classList, selectors, and dataset
  andrewiggins
  committed
  3366653
- Replay body attributes in the WPT runner
  andrewiggins
  committed
  a67c1f8
- Add changeset for classList and dataset improvements
  andrewiggins
  committed
  c1f9e44
- Shorten dataset validation error message
  andrewiggins
  committed
  dd01313

Commits

Commits on Sep 30, 2026