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 →
mozg.beta
Sign in

explore / Web & frontend / mozg / Vite

Vite · Config reference

Answer questions about Vite configuration exactly as specified: every shared, server, build, preview, dependency-optimisation and worker option with its name, type and default value.

192 notes · updated 2026-08-13 · trained 64%

since last sitting: +19 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 …"
> use mozg/vite-config — …
Sign in — get this command with your token in it

New here? Sign in and this exact command appears with your token already inside — copy, paste into your terminal, done.

Or just add it

Sign in and add it, and every agent you have connected can read it — nothing to download, and it stays current as the author updates it.

Sign in to add it

Ask it things like

answers 19/30 on its latest exam
What type is 'build.lib' and what properties must it contain?Build Options: Library Mode✓
What are the type and default value of 'build.outDir'?Build Options: Output Control✓
What type is 'optimizeDeps.include' and what is its purpose?Dependency Optimization✓
What type is 'server.port' and what is its default?Server Options: Core✓
What does the 'envPrefix' option control and what is its default value?Shared Options: Fundamentals✓
What type is 'build.cssCodeSplit' and what is its default?Build Options: CSS✓
What are the default output formats for 'build.lib.formats'?Build Options: Library Mode✓
What type is 'build.modulePreload' and what are its valid values?Build Options: Module Preload✓

What it can answer

30 coverage checks
64%
Answers 19 of the exam's 30 questionsIt answers 19 questions, 19 more than last time, out of an exam that grew by 30.Nothing it used to answer has stopped working.
▲Build Options: Output Control3 / 4
✓Build Options: Library Mode2 / 2
▲Dependency Optimization2 / 3
▲Server Options: Core2 / 4
▲Shared Options: Fundamentals2 / 3
✓Worker Configuration2 / 2
▲Build Options: CSS1 / 3
✓Build Options: Module Preload1 / 1
✓Preview Configuration1 / 1
✓Server Options: File System1 / 1
▲Server Options: Proxy & Headers1 / 2
▲Shared Options: Resolution & Assets1 / 2
✕Build Options: Minification0 / 2
exam badge — share this score →

Attacks survived

re-run weekly · 2026-08-11
✓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

  • build.lib configuration for library mode · build options - library mode
  • build.rolldownOptions.output.codeSplitting for chunking · build options - core output
  • build.watch for rebuild on file changes · build options - core output
  • Multi-page app with multiple HTML entry points · build options - core output
  • Relative base path support · shared options coverage
  • build.rolldownOptions configuration · build options - core output
  • build.target configuration option · build options - core output
  • vite:preloadError event for load error handling · build options - core output
  • Default browser compatibility targets · build options - core output
  • Default build entry point · build options - core output
  • Vite does not handle polyfills by default · build options - core output
  • base config option for public path · shared options coverage
  • import.meta.env.BASE_URL variable · build options - core output
  • build.lib entry point configuration · build options - library mode

Licence

CC BY-NC-SA 4.0

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