@redwoodjs/sdk/dist/vite/injectHmrPreambleJsxPlugin.mjs

Build fast, server-driven webapps on Cloudflare with SSR, RSC, and realtime

import MagicString from "magic-string";
export const injectHmrPreambleJsxPlugin = () => ({
    name: "rwsdk:inject-hmr-preamble",
    apply: "serve",
    async transform(code, id) {
        const htmlHeadRE = /jsxDEV\("html",[^]*?jsxDEV\("head",[^]*?\[(.*?)\]/s;
        const match = code.match(htmlHeadRE);
        if (!match) {
            return;
        }
        const s = new MagicString(code);
        const headContentStart = match.index + match[0].lastIndexOf("[");
        s.appendLeft(headContentStart + 1, `jsxDEV("script", { 
        type: "module",
        src: "/__vite_preamble__",
      }),`);
        return {
            code: s.toString(),
            map: s.generateMap(),
        };
    },
});