rwsdk/dist/vite/vitePreamblePlugin.mjs

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

import MagicString from "magic-string";
import { virtualPlugin } from "./virtualPlugin.mjs";
export const vitePreamblePlugin = () => {
    let base = "/";
    const inner = virtualPlugin("vite-preamble", async () => {
        const refreshPath = base.replace(/\/$/, "") + "/@react-refresh";
        const s = new MagicString(`
import RefreshRuntime from "${refreshPath}"; RefreshRuntime.injectIntoGlobalHook(window); window.$RefreshReg$ = () => {}; window.$RefreshSig$ = () => (type) => type; window.__vite_plugin_react_preamble_installed__ = true;
    `);
        return {
            code: s.toString(),
            map: s.generateMap(),
        };
    });
    return {
        ...inner,
        configResolved(config) {
            base = config.base || "/";
        },
    };
};