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miti99bot/renderer
tiennm99 f475a5cb46 build: move from pnpm to npm
Replace pnpm-lock.yaml with package-lock.json. allowBuilds for esbuild becomes
package.json#allowScripts. The Dockerfile installs with npm ci --omit=dev and
no longer prepares pnpm through corepack; .npmrc keeps engine-strict, which npm
honours natively.

minimumReleaseAgeExclude is dropped rather than translated: pnpm's
minimumReleaseAge was never set, so the 30-entry exclusion list had nothing to
exclude from. Direct dependency versions resolve identically to the pnpm
lockfile.
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..
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wheelofnames

Self-hosted API that renders wheel-of-names GIF animations with Remotion.

API

POST /api/gif
Content-Type: application/json
Accept: image/gif
Authorization: Bearer change-me
{
  "options": ["alice", "bob", "carol"],
  "winnerIndex": 1,
  "durationMs": 6500,
  "holdMs": 1200,
  "fps": 15,
  "size": 512,
  "theme": "classic"
}

Response is image/gif with winner metadata headers:

  • X-Wheel-Winner-Index
  • X-Wheel-Winner
  • X-Render-Duration-Ms

X-Wheel-Winner is URL-encoded so non-ASCII labels are safe in HTTP headers.

Local

Install dependencies and Chromium once:

npm install
npm run browser:ensure

Start the local API:

npm run dev

Generate GIF files locally

Generate the quick smoke fixture at the git-ignored path fixtures/smoke.gif:

npm run render:smoke

Generate the complete fixture set at fixtures/smoke.gif, fixtures/vietnamese.gif, and fixtures/sixteen-options.gif:

npm run render:fixtures

Render a custom GIF directly without starting the API server:

npm run render:local -- `
  --output wheel.gif `
  --option "Chiều nay uống CraneTea" `
  --option "Chiều nay uống CraneTea" `
  --option "Cà phê" `
  --winner 1

macOS, Linux, or Git Bash:

npm run render:local -- \
  --output wheel.gif \
  --option "Chiều nay uống CraneTea" \
  --option "Chiều nay uống CraneTea" \
  --option "Cà phê" \
  --winner 1

--winner is a zero-based index and is random when omitted. Run npm run render:local -- --help for duration, hold, FPS, size, theme, and timeout options. The documented root wheel.gif and fixtures/*.gif outputs are git-ignored and safe to delete; custom output paths may need their own ignore rule.

Verify

Run the API smoke test and quality gates:

npm run api:smoke
npm run lint
npm run typecheck
npm test

Deploy

Use a container runtime first. Static-only platforms cannot satisfy POST /api/gif because Remotion server rendering needs Node, Chromium/runtime dependencies, and FFmpeg/compositor support.

docker build -t wheelofnames .
docker run --rm -p 3000:3000 -e API_TOKEN=change-me wheelofnames

Recommended starting resources: 1-2 vCPU and 1-2 GB RAM, with MAX_CONCURRENT_RENDERS=1. RENDER_TIMEOUT_MS defaults to 15000 and is raised to Remotion's 7000ms browser timeout floor when configured lower. API_TOKEN is required when NODE_ENV=production.