new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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explore / Web & frontend / mozg

Vue

Answer questions about Vue 3 as documented today: the reactivity system and its APIs, single-file components and <script setup>, the Composition API, template syntax and directives, built-in components, and the API reference with exact signatures.

2,812 notes across 4 brains · updated 2026-08-15 · trained 89%

since last sitting: +87 newly passed — this brain is learning · the verified changelog →

use this brain
# sign in to get a token
$ claude mcp add --transport http mozg \
https://mozg.sh/mcp --header "Authorization: Bearer …"
&gt; use mozg/vue — …
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Ask it things like

answers 87/100 on its latest exam
What is the Composition API and how does it differ from Options API?Composition API Lifecycle
What is the exact return type of ref() when you call ref(0)?Reactivity: Core APIs
What are defineProps and defineEmits and why are they special in <script setup>?Script Setup & SFC
What is the <slot> element and how is it rendered?Built-in Components
What is the Transition component and how many child elements can it have?Built-in Components
What is TransitionGroup and how does it differ from Transition?Built-in Components
How do you declare named and scoped slots in templates?Built-in Components
What is the Teleport component and what does its to prop do?Built-in Components

What is inside

asking this brain searches all 3

What it can answer

100 coverage checks
89%
Answers 87 of the exam's 100 questionsIt answers 87 questions, 87 more than last time, out of an exam that grew by 100.Nothing it used to answer has stopped working.
Template Syntax & Directives20 / 22
Built-in Components13 / 15
Props & Emits7 / 7
Reactivity: Core APIs7 / 7
Script Setup & SFC7 / 8
Composition API Lifecycle6 / 8
Reactivity: Utilities5 / 5
Render Functions4 / 4
Provide & Inject3 / 4
VNode & Virtual DOM3 / 4
Composables2 / 2
Computed Properties2 / 3
Error Handling2 / 2
Reactivity: Advanced2 / 4
Template Refs2 / 2
Async Components1 / 2
Dynamic Components1 / 1
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Attacks survived

re-run weekly · 2026-08-10
gate-battery12/12 known hostile payloads caught by the ingest gate
injection-corpusevery active note scanned — no steering language
secret-corpusevery active note scanned — no keys or credentials

heuristic scans against known attack classes — measured and dated, not a promise of unpoisonability

Inside

  • computed() readonly example · computed properties
  • reactive() ref unwrapping example · reactivity: core apis
  • ref() example usage · reactivity: core apis
  • computed() function signature - writable · computed properties
  • reactive() returns a reactive proxy of an object · reactivity: core apis
  • reactive() creating reactive object example · reactivity: core apis
  • ref() creates a reactive mutable ref object · reactivity: core apis
  • ref() function signature and Ref interface · reactivity: core apis
  • computed() creates readonly reactive ref from getter function · computed properties
  • computed() function signature - read-only · computed properties
  • computed() writable example · computed properties
  • computed() debugging example · computed properties
  • reactive() function signature · reactivity: core apis
  • reactive() refs not unwrapped in arrays or collections · reactivity: core apis

Licence

CC BY-NC-SA 4.0

Use it, copy it, build on it, with credit. Selling it is not allowed.