HOSTING FOR AI-BUILT APPS
Deploy a Svelte single-page app on Yeeted
A color contrast checker written as a Svelte 5 + Vite single-page app
(plain Svelte, not SvelteKit), with no Dockerfile: Yeeted detects Svelte
from package.json, runs npm ci from the lockfile and npm run build, and
serves dist/ from nginx with a fallback to index.html, so deep links load
the app instead of a 404. SvelteKit is detected separately and is not what
this example covers.
The contrast math is the WCAG 2 formula in src/contrast.js, a plain module
with no Svelte imports. The same module backs the Vue and
Astro examples, and the
Angular one carries a typed copy, so any
difference between them is the framework and its build, not the app.
Tests: npm test (node:test on the contrast math) · ./smoke.sh https://...
against a deployment.
Run locally
Use Node 22.12 or newer. From node/contrast-svelte:
npm ci
npm test
npm run dev
Open the URL Vite prints. npm run build writes the production files to
dist/, which is what the deployed image serves.
Deploy and verify
Follow the deployment walkthrough. Deploy this
folder, including package-lock.json and yeeted.yaml, with no database.
Do not upload node_modules/ or dist/; the build runs on Yeeted. The
manifest routes to port 80, where nginx listens.
sh smoke.sh "$PREVIEW_URL"
The script checks that the BUILT index.html is served (it references
/assets/, which the source file does not), that the JavaScript bundle holds
the contrast logic, and that a deep link such as /check/navy-on-white falls
back to the app.
What the app does not do
Everything runs in the browser; there is no API and nothing is stored. The
calculator implements the WCAG 2 ratio only, not APCA or any other contrast
model, and it accepts #rgb and #rrggbb colors only.