Who contributed to Vue.js on June 14, 2026?

1 developer shipped this update, including itosa-kazu.

What were the notable Vue.js updates?

refactor(compiler/vapor): remove withVaporCtx slot wrapping, refactor(compiler/vapor): simplify slot fallback model, and perf(compiler/vapor): reduce v-if branch scope overhead.

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The Wire · Showcase

VAPOR COMPILER GETS LEANER, DEVTOOLS FIXES MODULE MISMATCH

By RepoJournal · Filed 06:00 UTC on June 14, 2026 · About Vue.js

1 person shipped this

itosa-kazu @itosa-kazu 1 cited

Vue's Vapor compiler just shed slot wrapping overhead while DevTools v8.1.3 corrects a package.json export that was pointing to the wrong file.

The Vapor compiler landed three consecutive optimizations overnight [1][2][3]. The headline move is stripping out withVaporCtx slot wrapping entirely, which simplifies the generated code path for components using slots. That's paired with a refactor of the slot fallback model [2] and a targeted perf win that reduces v-if branch scope overhead [3]. All three changes are syncing back from the core Vue repository, which means the Vapor team is running these experiments at scale before they hit your build pipeline.

DevTools v8.1.3 shipped a fix [4] for a publishing mistake that's been quietly breaking integrations. The vite-plugin-vue-devtools was advertising `module: dist/vite.mjs` in package.json, but the actual build output was `dist/vite.js` [5][6]. ESM bundlers checking the module field would get a 404. This is now corrected to point at the real file.

Action items

→ Upgrade DevTools to v8.1.3 if you're using the Vite plugin in production vuejs/devtools [plan]
→ Watch Vapor compiler changes for integration opportunities in your build vuejs/vue-jsx-vapor [monitor]

References

[1] refactor(compiler/vapor): remove withVaporCtx slot wrapping vuejs/vue-jsx-vapor
[2] refactor(compiler/vapor): simplify slot fallback model vuejs/vue-jsx-vapor
[3] perf(compiler/vapor): reduce v-if branch scope overhead vuejs/vue-jsx-vapor
[4] v8.1.3 ↗ vuejs/devtools
[5] fix(vite): point module field to emitted ESM file ↗ vuejs/devtools
[6] fix(vite): align module field with emitted ESM output (#1106) vuejs/devtools

Quick answers

What shipped in Vue.js on June 14, 2026?: Vue's Vapor compiler just shed slot wrapping overhead while DevTools v8.1.3 corrects a package.json export that was pointing to the wrong file. In total, 11 commits, 1 pull requests, and 1 releases landed.
Who contributed to Vue.js on June 14, 2026?: 1 developer shipped this update, including itosa-kazu.
What were the notable Vue.js updates?: refactor(compiler/vapor): remove withVaporCtx slot wrapping, refactor(compiler/vapor): simplify slot fallback model, and perf(compiler/vapor): reduce v-if branch scope overhead.

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