one/dist/esm/cli/buildPage.mjs

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.mjs";
import { getLoaderPath, getPreloadCSSPath, getPreloadPath } from "../utils/cleanUrl.mjs";
import { isResponse } from "../utils/isResponse.mjs";
import { toAbsolute } from "../utils/toAbsolute.mjs";
import { replaceLoader } from "../vite/replaceLoader.mjs";
const {
  readFile,
  outputFile
} = FSExtra;
function urlPathToFilePath(urlPath) {
  const parts = urlPath.replace(/^\//, "").split("/");
  return join(...parts);
}
const buildTiming = process.env.ONE_BUILD_TIMING === "1",
  timings = {};
function recordTiming(label, ms) {
  buildTiming && (timings[label] ||= []).push(ms);
}
function printBuildTimings() {
  if (buildTiming) {
    console.info(`
\u{1F4CA} Build timing breakdown:`);
    for (const [label, times] of Object.entries(timings)) {
      const avg = times.reduce((a, b) => a + b, 0) / times.length,
        total = times.reduce((a, b) => a + b, 0);
      console.info(`  ${label}: ${avg.toFixed(1)}ms avg, ${total.toFixed(0)}ms total (${times.length} calls)`);
    }
  }
}
async function buildPage(serverEntry, path, relativeId, params, foundRoute, clientManifestEntry, staticDir, clientDir, builtMiddlewares, serverJsPath, preloads, allCSS, routePreloads, allCSSContents, criticalPreloads, deferredPreloads, useAfterLCP, useAfterLCPAggressive) {
  let t0 = performance.now();
  const render = await getRender(serverEntry);
  recordTiming("getRender", performance.now() - t0);
  const htmlPath = `${path.endsWith("/") ? `${removeTrailingSlash(path)}/index` : path}.html`,
    clientJsPath = clientManifestEntry ? 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(`
`);
    t0 = performance.now(), await FSExtra.writeFile(join(clientDir, urlPathToFilePath(preloadPath)), preloadContent), recordTiming("writePreload", performance.now() - t0);
    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()
`;
    t0 = performance.now(), await FSExtra.writeFile(join(clientDir, urlPathToFilePath(cssPreloadPath)), cssPreloadContent), recordTiming("writeCSSPreload", performance.now() - t0), t0 = performance.now();
    const exported = await import(toAbsolute(serverJsPath));
    recordTiming("importServerModule", performance.now() - t0);
    const loaderProps = {
        path,
        params
      },
      matches = [];
    if (t0 = performance.now(), foundRoute.layouts?.length) {
      const layoutResults = await Promise.all(foundRoute.layouts.map(async layout => {
        try {
          const layoutServerPath = layout.loaderServerPath;
          if (!layoutServerPath) return {
            contextKey: layout.contextKey,
            loaderData: void 0
          };
          const layoutLoaderData = await (await import(toAbsolute(join("./", "dist/server", layoutServerPath))))?.loader?.(loaderProps);
          return {
            contextKey: layout.contextKey,
            loaderData: layoutLoaderData
          };
        } catch (err) {
          if (isResponse(err)) throw err;
          return console.warn(`[one] Warning: layout loader failed for ${layout.contextKey}:`, err), {
            contextKey: layout.contextKey,
            loaderData: void 0
          };
        }
      }));
      for (const result of layoutResults) matches.push({
        routeId: result.contextKey,
        pathname: path,
        params: params || {},
        loaderData: result.loaderData
      });
    }
    recordTiming("layoutLoaders", performance.now() - t0), t0 = performance.now();
    let loaderRedirectInfo = null;
    if (exported.loader) {
      try {
        loaderData = (await exported.loader?.(loaderProps)) ?? null;
      } catch (err) {
        if (isResponse(err)) loaderRedirectInfo = extractRedirectInfo(err);else throw err;
      }
      if (!loaderRedirectInfo && loaderData && (isResponse(loaderData) || loaderData instanceof Response || loaderData?.constructor?.name === "Response") && (loaderRedirectInfo = extractRedirectInfo(loaderData), loaderData = {}), clientJsPath) {
        const loaderPartialPath = join(clientDir, urlPathToFilePath(getLoaderPath(path)));
        if (loaderRedirectInfo) {
          const redirectData = JSON.stringify({
            __oneRedirect: loaderRedirectInfo.path,
            __oneRedirectStatus: loaderRedirectInfo.status
          });
          await outputFile(loaderPartialPath, `export function loader(){return ${redirectData}}`), loaderPath = getLoaderPath(path), loaderData = {};
        } else {
          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
            });
          await outputFile(loaderPartialPath, withLoader), loaderPath = getLoaderPath(path);
        }
      }
    }
    if (recordTiming("pageLoader", performance.now() - t0), matches.push({
      routeId: foundRoute.file,
      pathname: path,
      params: params || {},
      loaderData
    }), foundRoute.type !== "ssr") {
      if (globalThis.__vxrnresetState?.(), foundRoute.type === "ssg") {
        const renderPreloads = criticalPreloads || preloads,
          renderDeferredPreloads = useAfterLCPAggressive ? [] : deferredPreloads;
        t0 = performance.now();
        let html = await render({
          path,
          preloads: renderPreloads,
          deferredPreloads: renderDeferredPreloads,
          loaderProps,
          loaderData,
          css: allCSS,
          cssContents: allCSSContents,
          mode: "ssg",
          routePreloads,
          matches
        });
        recordTiming("ssrRender", performance.now() - t0), useAfterLCP && (html = applyAfterLCPScriptLoad(html, preloads)), t0 = performance.now(), await outputFile(htmlOutPath, html), recordTiming("writeHTML", performance.now() - t0);
      } else if (foundRoute.type === "spa") if (foundRoute.layouts?.some(layout => layout.layoutRenderMode === "ssg" || layout.layoutRenderMode === "ssr")) {
        globalThis.__vxrnresetState?.();
        const renderPreloads = criticalPreloads || preloads,
          renderDeferredPreloads = deferredPreloads || [],
          layoutMatches = matches.slice(0, -1);
        t0 = performance.now();
        let html = await render({
          path,
          preloads: renderPreloads,
          deferredPreloads: renderDeferredPreloads,
          loaderProps,
          // don't pass loaderData for spa-shell - the page loader runs on client
          // passing {} here would make useLoaderState think data is preloaded
          loaderData: void 0,
          css: allCSS,
          cssContents: allCSSContents,
          mode: "spa-shell",
          routePreloads,
          matches: layoutMatches
        });
        recordTiming("spaShellRender", performance.now() - t0), useAfterLCP && (html = applyAfterLCPScriptLoad(html, preloads)), t0 = performance.now(), await outputFile(htmlOutPath, html), recordTiming("writeHTML", performance.now() - t0);
      } else {
        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, `<!DOCTYPE html><html><head>
            ${constants.getSpaHeaderElements({
          serverContext: {
            loaderProps,
            loaderData
          }
        })}
            ${criticalScripts}
            ${deferredLinks}
            ${cssOutput}
          </head><body></body></html>`);
      }
    }
  } catch (err) {
    const errMsg = err instanceof Error ? `${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 extractRedirectInfo(response) {
  if (response.status >= 300 && response.status < 400) {
    const location = response.headers.get("location");
    if (location) try {
      const url = new URL(location);
      return {
        path: url.pathname + url.search + url.hash,
        status: response.status
      };
    } catch {
      return {
        path: location,
        status: response.status
      };
    }
  }
  return null;
}
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, printBuildTimings };
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