Vue.js: Scheduler Isolation and Vapor Interop Fixes
Two competing fixes target nested scheduler flushes when mounting inside a watcher, while seven Vapor patches tighten parity with the classic renderer around transitions, hydration, and event handlers.
Duration: PT2M27S
Episode overview
This episode is a short developer briefing from Vue.js.
It explains recent repository work in plain language.
- Show: Vue.js
- Published: 2026-10-03T13:12:04Z
- Audio duration: PT2M27S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, it's October 3rd, 2026.
The top story is scheduler isolation in the core runtime, with a parallel push to make Vapor behave like the classic renderer where they intermix.
First, mounting inside reactive work. Today there are two proposals for the same long-standing bug, issue 6728. The problem: a root render drains the entire pre- and post-flush queues so setup-triggered watchers run before mounted. That means if you mount an app inside a pre watcher, remaining queued watchers run…
Second, Vapor interop and hydration. Five patches cluster around transitions, slots, and async components. Pull request 15762 ensures a classic async component under a Vapor parent keeps getting prop and slot updates when hydration is deferred. Pull request 15754 fixes multi-root slot content forwarded below a Vapor…
Finally, a small reactivity correction in 15755: a once watcher now stops even if its callback throws.
What's next: watch which scheduler approach lands, and if you mount apps inside watchers or mix Vapor and classic components, test transitions, deferred hydration, and optional handlers closely.
Nearby episodes from Vue.js
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- Weekly Recap - Vapor Parity and Hydration Hardening
- Vapor Parity Push and Nested Transition Fix
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