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LANGUAGE TOOLS RECLAIM CUSTOM ELEMENT SUPPORT, PROPS COMPLETION GETS SMARTER
By RepoJournal · Filed · About Vue.js
Vue's language-tools just restored the HTML custom data feature that hundreds of teams rely on for web components, while tightening TypeScript prop inference to match the language itself.
The language-tools team shipped a critical restore [1] that re-enables html.customData support in the language service, unblocking teams using UI5 Web Components and other custom elements that don't have dedicated Vue wrappers. This matters because the feature broke in an earlier version and users have been stuck without code completion for their web component libraries. Alongside that, the TypeScript plugin got a precision upgrade [2] that refines props completion logic to actually follow TypeScript behavior instead of guessing, which means your IDE stops suggesting invalid prop combinations. The core team also pushed v3.6.0-beta.12 [3] forward with more stability improvements as the release candidate cycle tightens. Test-utils continues its dependency hygiene with oxfmt at v0.50.0 [4] and pkg-pr-new bumped to v0.0.73 [5], both low-friction upgrades that keep the testing toolchain current.
Action items
- → Update language-tools to latest if you use custom HTML elements or web components vuejs/language-tools [plan]
- → Update test-utils dependencies (oxfmt, pkg-pr-new) on your next maintenance pass vuejs/test-utils [monitor]
- → Test v3.6.0-beta.12 in your pipeline if you're tracking pre-release stability vuejs/core [monitor]
References
- [1] fix(language-service): re-support `html.customData` ↗ vuejs/language-tools
- [2] feat(typescript-plugin): refine props completion logic to follow TS behavior ↗ vuejs/language-tools
- [3] v3.6.0-beta.12 ↗ vuejs/core
- [4] chore(deps): update dependency oxfmt to v0.50.0 ↗ vuejs/test-utils
- [5] chore(deps): update dependency pkg-pr-new to v0.0.73 ↗ vuejs/test-utils
FAQ
- What changed in Vue.js on May 16, 2026?
- Vue's language-tools just restored the HTML custom data feature that hundreds of teams rely on for web components, while tightening TypeScript prop inference to match the language itself.
- What should Vue.js teams do about it?
- Update language-tools to latest if you use custom HTML elements or web components • Update test-utils dependencies (oxfmt, pkg-pr-new) on your next maintenance pass • Test v3.6.0-beta.12 in your pipeline if you're tracking pre-release stability
- Which Vue.js repositories shipped on May 16, 2026?
- vuejs/language-tools, vuejs/core, vuejs/test-utils