one/dist/esm/cli/buildPage.js

One is a new React Framework that makes Vite serve both native and web.

import { join } from "node:path";
import FSExtra from "fs-extra";
import * as constants from "../constants";
import { getLoaderPath, getPreloadPath, getPreloadCSSPath } from "../utils/cleanUrl";
import { isResponse } from "../utils/isResponse";
import { toAbsolute } from "../utils/toAbsolute";
import { replaceLoader } from "../vite/replaceLoader";
const { readFile, outputFile } = FSExtra;
function urlPathToFilePath(urlPath) {
  const parts = urlPath.replace(/^\//, "").split("/");
  return join(...parts);
}
async function buildPage(serverEntry, path, relativeId, params, foundRoute, clientManifestEntry, staticDir, clientDir, builtMiddlewares, serverJsPath, preloads, allCSS, routePreloads, allCSSContents, criticalPreloads, deferredPreloads, useAfterLCP, useAfterLCPAggressive) {
  const render = await getRender(serverEntry), htmlPath = `${path.endsWith("/") ? `${removeTrailingSlash(path)}/index` : path}.html`, clientJsPath = join("dist/client", clientManifestEntry.file), htmlOutPath = toAbsolute(join(staticDir, htmlPath)), preloadPath = getPreloadPath(path), cssPreloadPath = getPreloadCSSPath(path);
  let loaderPath = "", loaderData = {};
  try {
    const routeImports = [], routeRegistrations = [];
    let routeIndex = 0;
    for (const [routeKey, bundlePath] of Object.entries(routePreloads)) {
      const varName = `_r${routeIndex++}`;
      routeImports.push(`import * as ${varName} from "${bundlePath}"`), routeRegistrations.push(`registerPreloadedRoute("${routeKey}", ${varName})`);
    }
    const registrationCalls = routeRegistrations.map(
      (call) => call.replace("registerPreloadedRoute(", "window.__oneRegisterPreloadedRoute(")
    ), preloadContent = [
      // import all route modules
      ...routeImports,
      // static imports for cache warming (original behavior)
      ...preloads.map((preload) => `import "${preload}"`),
      // register all route modules using window global
      ...registrationCalls
    ].join(`
`);
    await FSExtra.writeFile(join(clientDir, urlPathToFilePath(preloadPath)), preloadContent);
    const uniqueCSS = [...new Set(allCSS)], cssPreloadContent = `
const CSS_TIMEOUT = 1000
const cssUrls = ${JSON.stringify(uniqueCSS)}

// Global cache for loaded CSS - avoids DOM queries and tracks across navigations
const loaded = (window.__oneLoadedCSS ||= new Set())

// Prefetch CSS without applying - called on link hover
export function prefetchCSS() {
  cssUrls.forEach(href => {
    if (loaded.has(href)) return
    if (document.querySelector(\`link[href="\${href}"]\`)) return
    const link = document.createElement('link')
    link.rel = 'prefetch'
    link.as = 'style'
    link.href = href
    document.head.appendChild(link)
  })
}

// Inject CSS to apply styles - called on actual navigation
export function injectCSS() {
  return Promise.all(cssUrls.map(href => {
    // Skip if already loaded
    if (loaded.has(href)) return Promise.resolve()
    // Remove any prefetch link for this href
    const prefetchLink = document.querySelector(\`link[rel="prefetch"][href="\${href}"]\`)
    if (prefetchLink) prefetchLink.remove()
    // Skip if stylesheet already exists in DOM
    if (document.querySelector(\`link[rel="stylesheet"][href="\${href}"]\`)) {
      loaded.add(href)
      return Promise.resolve()
    }
    return new Promise(resolve => {
      const link = document.createElement('link')
      link.rel = 'stylesheet'
      link.href = href
      const timeoutId = setTimeout(() => {
        console.warn('[one] CSS load timeout:', href)
        loaded.add(href)
        resolve()
      }, CSS_TIMEOUT)
      link.onload = link.onerror = () => {
        clearTimeout(timeoutId)
        loaded.add(href)
        resolve()
      }
      document.head.appendChild(link)
    })
  }))
}

// For backwards compatibility, also prefetch on import
prefetchCSS()
`;
    await FSExtra.writeFile(join(clientDir, urlPathToFilePath(cssPreloadPath)), cssPreloadContent);
    const exported = await import(toAbsolute(serverJsPath));
    if (exported.loader) {
      try {
        loaderData = await exported.loader?.({ path, params }) ?? null;
      } catch (err) {
        if (!isResponse(err))
          throw err;
      }
      const code = await readFile(clientJsPath, "utf-8"), withLoader = (
        // super dirty to quickly make ssr loaders work until we have better
        `
if (typeof document === 'undefined') globalThis.document = {}
` + replaceLoader({
          code,
          loaderData
        })
      ), loaderPartialPath = join(clientDir, urlPathToFilePath(getLoaderPath(path)));
      await outputFile(loaderPartialPath, withLoader), loaderPath = getLoaderPath(path);
    }
    if (foundRoute.type !== "ssr") {
      const loaderProps = { path, params };
      if (globalThis.__vxrnresetState?.(), foundRoute.type === "ssg") {
        let html = await render({
          path,
          preloads: criticalPreloads || preloads,
          deferredPreloads: useAfterLCPAggressive ? [] : deferredPreloads,
          loaderProps,
          loaderData,
          css: allCSS,
          cssContents: allCSSContents,
          mode: "ssg",
          routePreloads
        });
        useAfterLCP && (html = applyAfterLCPScriptLoad(html, preloads)), await outputFile(htmlOutPath, html);
      } else if (foundRoute.type === "spa") {
        const cssOutput = allCSSContents ? allCSSContents.filter(Boolean).map((content) => `    <style>${content}</style>`).join(`
`) : allCSS.map((file) => `    <link rel="stylesheet" href=${file} />`).join(`
`), criticalScripts = (criticalPreloads || preloads).map((preload) => `   <script type="module" src="${preload}"></script>`).join(`
`), deferredLinks = (deferredPreloads || []).map((preload) => `   <link rel="modulepreload" fetchPriority="low" href="${preload}"/>`).join(`
`);
        await outputFile(
          htmlOutPath,
          `<html><head>
          ${constants.getSpaHeaderElements({ serverContext: { loaderProps, loaderData } })}
          ${criticalScripts}
          ${deferredLinks}
          ${cssOutput}
        </head></html>`
        );
      }
    }
  } catch (err) {
    const errMsg = err instanceof Error ? `${err.message}
${err.stack}` : `${err}`;
    console.error(
      `Error building static page at ${path} with id ${relativeId}:

${errMsg}

loaderData:

${JSON.stringify(loaderData || null, null, 2)}
params:

${JSON.stringify(params || null, null, 2)}`
    ), console.error(err), process.exit(1);
  }
  const middlewares = (foundRoute.middlewares || []).map((x) => builtMiddlewares[x.contextKey]), cleanPath = path === "/" ? path : removeTrailingSlash(path);
  return {
    type: foundRoute.type,
    css: allCSS,
    cssContents: allCSSContents,
    routeFile: foundRoute.file,
    middlewares,
    cleanPath,
    preloadPath,
    cssPreloadPath,
    loaderPath,
    clientJsPath,
    serverJsPath,
    htmlPath,
    loaderData,
    params,
    path,
    preloads,
    criticalPreloads,
    deferredPreloads
  };
}
async function getRender(serverEntry) {
  let render = null;
  try {
    const serverImport = await import(serverEntry);
    render = serverImport.default.render || // for an unknown reason this is necessary
    serverImport.default.default?.render, typeof render != "function" && (console.error("\u274C Error: didn't find render function in entry", serverImport), process.exit(1));
  } catch (err) {
    console.error("\u274C Error importing the root entry:"), console.error(`  This error happened in the built file: ${serverEntry}`), console.error(err.stack), process.exit(1);
  }
  return render;
}
function removeTrailingSlash(path) {
  return path.endsWith("/") ? path.slice(0, path.length - 1) : path;
}
function applyAfterLCPScriptLoad(html, preloads) {
  html = html.replace(/<script\s+type="module"[^>]*async[^>]*><\/script>/gi, "");
  const loaderScript = `
<script>
(function() {
  var scripts = ${JSON.stringify(preloads)};
  function loadScripts() {
    scripts.forEach(function(src) {
      var script = document.createElement('script');
      script.type = 'module';
      script.src = src;
      document.head.appendChild(script);
    });
  }
  function waitIdle(n) {
    if (n <= 0) {
      requestAnimationFrame(function() {
        requestAnimationFrame(loadScripts);
      });
      return;
    }
    setTimeout(function() {
      setTimeout(function() {
        waitIdle(n - 1);
      }, 0);
    }, 0);
  }
  waitIdle(5);
})();
</script>`;
  return html = html.replace("</head>", `${loaderScript}</head>`), html;
}
export {
  buildPage
};
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