CDN Kit

Dependency-free helpers for CDN URLs and cache headers.

mosa.sh

npm i cdn-kit

import { cdnUrl, immutableCacheControl, varyHeader } from "cdn-kit";

const src = cdnUrl("https://cdn.example", "images/hero.jpg", {
  query: { w: 1200 },
});
const cacheControl = immutableCacheControl();
const vary = varyHeader(["Accept", "DPR"]);

cdn-kit formats values; it does not fetch, upload, transform, or cache files.

API

• cdnUrl(origin, path, options?) joins a CDN URL and sorted query parameters.
• immutableCacheControl(maxAge?) returns a long-lived immutable cache policy.
• varyHeader(names) returns a deduplicated Vary header value.

Development

npm test --workspace=cdn-kit

MIT