Function serveInjectedIndexHtml

scripts/static-server.mjs:336–382

* Serve index.html with runtime config injected into . * Returns true if the response was written, false if the file was not found.

(
  req,
  res,
  indexPath,
  {
    sessionApiKey,
    authRequired,
    runtimeServicesInfo,
    lockToCloud,
    basePath,
  } = {},
)

 * Returns true if the response was written, false if the file was not found.
 */
async function serveInjectedIndexHtml(
  req,
  res,
  indexPath,
  {
    sessionApiKey,
    authRequired,
    runtimeServicesInfo,
    lockToCloud,
    basePath,
  } = {},
) {
  let content;
  try {
    content = await readFile(indexPath, "utf8");
  } catch {
    return false;
  }

  const script = makeConfigInjectionScript(
    sessionApiKey,
    authRequired,
    runtimeServicesInfo,
    lockToCloud,
    basePath,
  );
  // Inject right before </head> so the key is available before any app code runs.
  // replace() targets the first (and only) </head> in well-formed HTML.
  const injected = content.includes("</head>")
    ? content.replace("</head>", `${script}\n</head>`)
    : content.includes("</body>")
      ? content.replace("</body>", `${script}\n</body>`)
      : script + content;

  const buf = Buffer.from(injected, "utf8");
  res.writeHead(200, {
    "Content-Type": "text/html; charset=utf-8",
    "Content-Length": buf.length,
    "Cache-Control": "no-cache",
  });
  if (req.method === "HEAD") {
    res.end();
  } else {
    res.end(buf);
  }
  return true;
}

// ─────────────────────────────────────────────────────────────────────────────
// Static file serving