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/** @jsxImportSource npm:react */
import { render as renderPNG } from "https://deno.land/x/resvg_wasm@0.2.0/mod.ts";
import { renderToStaticMarkup } from "https://esm.sh/react-dom/server";
type SVGComponentProps = {
request: Request;
url: URL;
};
const cache = new Map();
export function render(Component: React.ComponentType<SVGComponentProps>, headers: any = {}) {
return async function(req: Request): Promise<Response> {
const url = new URL(req.url);
const svg = renderToStaticMarkup(<Component request={req} url={url} />);
console.log(svg);
const png = await renderPNG(svg);
return new Response(png, {
headers: {
"Content-Type": "image/png",
...headers,
},
});
};
}
export default render;
/*
let png;
if (cache[req.url]) {
console.log("using cached response");
png = cache[req.url];
} else {
const svg = renderToStaticMarkup(<Component request={req} url={url} />);
console.log(svg);
png = await renderPNG(svg);
cache[req.url] = png;
}
*/
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July 21, 2024