What shipped in Vue.js on August 27, 2026?

Four fixes land in Vue core today, with the sharpest edge in v-model and Suspense edge cases. In total, 16 commits, 15 pull requests, and 1 releases landed.

Who contributed to Vue.js on August 27, 2026?

7 developers shipped this update, including zingiberoff, oedumoreira, edison1105, haoku123, johnsoncodehk, Divyansh Singh, and renovate.

What were the notable Vue.js updates?

fix(suspense): don't treat the leaving branch as the fallback while its mount is pending, fix(runtime-core): resolve $el for dev root comment fragment, and fix(shared): correctly compare Map and Set values.

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The Wire · Showcase

Vue fixes Map and Set comparison, Suspense transitions

By RepoJournal · Filed 06:55 UTC on August 27, 2026 · About Vue.js

7 people shipped this

johnsoncodehk @johnsoncodehk 2 cited

zingiberoff @zingiberoff 1 cited

oedumoreira @oedumoreira 1 cited

edison1105 @edison1105 1 cited

haoku123 @haoku123 1 cited

Divyansh Singh @brc-dd 1 cited

renovate @renovate

Four fixes land in Vue core today, with the sharpest edge in v-model and Suspense edge cases.

Vue core shipped four PRs overnight. The Suspense fix stops the leaving branch of a `Transition` from being patched into the fallback while its mount is pending [1], which closes a nasty ghost-content bug. A dev-mode root fragment now resolves `$el` correctly [2], and `Map`/`Set` comparison got a correctness pass [3]. That comparison fix also covers `v-model` on a `select` bound to a `Map` [3]. A separate `v-model` PR re-syncs the select's DOM state when a change handler overrides the model [4], closing #10505 and picking up a stalled PR. For language-tools, Volar is cleaning up codegen: synthetic variables are no longer reported as unmapped diagnostics [5], and setup bindings are unwrapped by value instead of relying on assertion signatures [6], which should kill false positives on functions and classes. Vitepress un-deprecates `Theme.setup`, enabling composable wiring without a wrapping Layout [7]. The action is all in core and language-tools today.

Action items

→ Review the Suspense + Transition fix when it lands in a nightly; it addresses a real stale-content bug vuejs/core [monitor]
→ Test your v-model selects against the Map comparison fix, especially with reordered or loosely equal entries vuejs/core [plan]
→ Follow the Volar codegen changes; if you run the v4 type-checker, expect fewer unmapped diagnostics vuejs/language-tools [monitor]

References

[1] fix(suspense): don't treat the leaving branch as the fallback while its mount is pending ↗ vuejs/core
[2] fix(runtime-core): resolve $el for dev root comment fragment ↗ vuejs/core
[3] fix(shared): correctly compare Map and Set values ↗ vuejs/core
[4] fix(v-model): re-sync select when model is overridden in change handler ↗ vuejs/core
[5] fix(language-core): eliminate unmapped codegen diagnostics ↗ vuejs/language-tools
[6] refactor(language-core): unwrap setup bindings by value ↗ vuejs/language-tools
[7] feat(theme): un-deprecate Theme.setup and compose it across extends (#5404) vuejs/vitepress

Quick answers

What shipped in Vue.js on August 27, 2026?: Four fixes land in Vue core today, with the sharpest edge in v-model and Suspense edge cases. In total, 16 commits, 15 pull requests, and 1 releases landed.
Who contributed to Vue.js on August 27, 2026?: 7 developers shipped this update, including zingiberoff, oedumoreira, edison1105, haoku123, johnsoncodehk, Divyansh Singh, and renovate.
What were the notable Vue.js updates?: fix(suspense): don't treat the leaving branch as the fallback while its mount is pending, fix(runtime-core): resolve $el for dev root comment fragment, and fix(shared): correctly compare Map and Set values.