Function load

packages/hosts/mcp-apps-shell/src/vite.ts:294–311

()

  let cached: { readonly html: string; readonly url: string } | undefined;

  const load = async (): Promise<{ readonly html: string; readonly url: string }> => {
    if (cached) return cached;
    const html = await buildMcpAppsShellHtml();
    // Build-blocking: runtime loaders authenticate the document by this
    // fragment (an ASSETS-binding miss under SPA not-found handling answers
    // with index.html and a 200), so a shell that lost it would make every
    // deployed resource read fail. Catch that here, in the build.
    if (!html.includes(MCP_APPS_SHELL_DOCUMENT_MARKER)) {
      // oxlint-disable-next-line executor/no-try-catch-or-throw, executor/no-error-constructor -- boundary: Vite plugin hooks report build failures by throwing
      throw new Error(
        `Built MCP-Apps shell is missing its identity marker (${MCP_APPS_SHELL_DOCUMENT_MARKER}); ` +
          "check the <meta> in src/shell/mcp-app.html.",
      );
    }
    const digest = createHash("sha256").update(html).digest("hex").slice(0, 12);
    cached = { html, url: `/assets/executor-mcp-apps-shell-${digest}.html` };
    return cached;
  };

  return {
    name: "executor-mcp-apps-shell-asset",