Advanced everything in Vue, Angular & Svelte
Testing shared Vue components: unit, a11y, visuals?
Unit tests (Vitest/Jest) for logic, accessibility tests (axe, Pa11y) for ARIA/keyboard, visual regression (Percy, Chromatic) for rendering.
Zone.js and change detection optimization in Angular?
Zone.js wraps async (timers, events, HTTP), triggering change detection after each; use runOutsideAngular when external libraries fire high-frequency events.
Compiler vs runtime reactivity: Svelte, Vue, Angular?
Svelte compiles away reactivity (smaller bundles, zero-cost), Vue/Angular use runtime Proxies/zone.js (flexible but heavier).
Prerendering vs SSR in SvelteKit: trade-offs?
Prerender generates static HTML at build, SSR renders on each request, prerender wins on speed but requires static data.
Nuxt 4.4 Adds Custom Fetch Factories and Router v5
Nuxt 4.4 ships createUseFetch factories, Vue Router v5, and 28x faster dev route updates. Custom fetch instances with typed defaults cut API boilerplate, while the router upgrade drops unplugin-vue-router and clears the path for stable typed routes.
Nuxt Agent beta replaces docs chat with MCP assistant
Nuxt Agent beta replaces Kapa.ai with an MCP assistant rendering module cards and StackBlitz links as live UI. It grounds answers in docs and GitHub issues via the same MCP server Cursor uses. Try the ⌘I panel on nuxt.com to see if it cuts your.
Nuxt ships Nuxi AI agent with context-aware docs help
Nuxt's AI agent Nuxi grounds answers in docs, modules, and GitHub issues using your current page context. GitHub sign-in syncs chats across devices, while branching lets you fork conversations. Use it to cut doc-hunting time and find v4 patterns faster.
SvelteKit 2.56 overhauls remote functions, adds TypeScript 6.0
SvelteKit 2.56 overhauls remote functions with breaking changes to query refreshes, caching, and a new run() method, plus TypeScript 6.0 support. The Svelte CLI adds experimental community plugins. Audit your remote function calls before upgrading.
SvelteKit 2.61 breaks remote functions, adds live queries
SvelteKit 2.61 removes .run() from remote queries and rewrites enhance callbacks, forcing refactors. New query.live() adds async-iterable real-time streams. If you use remote functions, check three breaking changes before upgrading.
Angular v22 stabilizes Signal Forms, Aria, Asynchronous Reactivity APIs
Angular v22 promotes Signal Forms, Angular Aria, and Asynchronous Reactivity APIs from developer preview to production-ready status, giving teams stable primitives for reactive forms, accessibility, and async signals without experimental guardrails.
Angular v21 ships while AI models write outdated code
Angular v21 ships while standard AI models still write outdated code. Zoneless architecture and Signals now dominate performance roadmaps. Audit AI PRs for legacy patterns and verify zoneless readiness before Q3.
Angular 21.1 ships with Signal Forms debounce patterns
Angular 21.1 ships with minor fixes. Signal Forms tutorials now show debounced async validators to cut wasted backend API calls. Migration guides for the modern Control Flow syntax are available for apps still on legacy structural directives.
Vue 3.4 Cuts Build Times 44%, Stabilizes defineModel
Vue 3.4 cuts SFC compile times 44% and doubles parser speed while stabilizing defineModel for v-model. The refactored reactivity engine skips redundant computed triggers, reducing re-renders. Upgrade requires Volar 1.8.27+ and matching toolchain versions.
VitePress 1.0 replaces VuePress for docs
VitePress 1.0 replaces VuePress, powering docs for Vite, Pinia, and Vitest. It serves static HTML for SEO, then hydrates into a Vue 3 SPA with sub-100ms edits. Migrate legacy VuePress docs or choose it for new content sites.
Vue 3.5 cuts reactivity memory 56%, adds lazy hydration
Vue 3.5 drops reactivity memory 56% and large arrays up to 10x faster with no breaks. Stable reactive props destructure kills withDefaults boilerplate, while lazy hydration and useId() fix SSR pain points.
Compare SSR, SSG, and ISR trade-offs in meta-frameworks
What it tests: matching rendering modes to build time, freshness, and scale. Outline: contrast SSR per-request cost with SSG fast CDN delivery but stale content and long builds, then show ISR as lazy regeneration post-deploy.
Explain patch flags and static hoisting in Vue 3's compiler
Tests your grasp of compiler-informed virtual DOM optimizations. A strong answer covers patch flags as bitmap hints for dynamic bindings and static hoisting as extracting static nodes to skip diffing. Red flag: claiming Vue 3 removes the virtual DOM.
How does Svelte compile count += 1 into DOM updates?
Tests if you know Svelte reactivity is compile-time via runes, not runtime proxies. Good answer: $state marks reactive vars; runes are compiler hooks; compiler emits DOM-sync code. Red flag: describing useState or VDOM.
How would you diagnose and optimize slow Angular component tests?
Tests Angular test economics and runner overhead. Strong answers profile with Vitest, swap Karma for jsdom/happy-dom, mock services, and reduce TestBed recompilation via targeted imports.
How do you architect Svelte stores to minimize WebSocket re-renders?
Tests Svelte store granularity and subscription semantics. A great answer splits the monolith into domain stores, uses derived selectors to isolate slices, and leverages readable stores to encapsulate the WebSocket source.
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