Three.js demo

Open the demo.

Edit an npm Three.js scene in TypeScript with Lvce Editor. The GitHub Pages site opens src/main.ts beside a live preview. Saving rebuilds dist/main.js with esbuild-wasm in the browser. TypeScript and ESLint diagnostics run through the editor's extensions.

The starting scene is rotating, extruded “LVCE” text with three self-contained matcap palettes that cycle every seven seconds for changing metallic highlights and depth. Change textColor in src/main.ts and save to tint the material. A compilation error keeps the last successful preview; correct the source and save to recover.

npm ci
npm run build
npm test
npm run type-check
npm run lint
npx playwright install chromium firefox
npm run e2e:headless

The build exports .tmp/static under the /threejs-demo URL prefix. GitHub Actions validates pull requests and publishes merged main to GitHub Pages. The site build precompiles the initial scene and verifies its inputs before using it. Edits compile in the browser with a reusable esbuild context; the demo needs no development server.

After deployment, compare the published assets with the validated build and check animation, preview close/reopen, edits, diagnostics, reloads, OrbitControls and completions in Chromium and Firefox. The local acceptance server instruments the sandbox worker to check its contexts and timers throughout those scenarios.