Update cppCode.ts

[kaigoh]

Add some pointers to the default document, so it can be referred to elsewhere by name ("dataDefaultDocument", "lengthDefaultDocument", "etagDefaultDocument").

That way, I can do this to keep SvelteKit routing happy:

server.onNotFound([](AsyncWebServerRequest *request)
{
if (request->hasHeader("If-None-Match") && request->getHeader("If-None-Match")->value() == String(etagDefaultDocument))
{
request->send(304);
return;
}
AsyncWebServerResponse *response = request->beginResponse_P(200, "text/html", dataDefaultDocument, lengthDefaultDocument);
response->addHeader("Content-Encoding", "gzip");
response->addHeader("ETag", etagDefaultDocument);
request->send(response); });

You could also rewrite the template that generates the C++ to just give the default document variables a different name rather than adding pointers, but I figured this was just quick and dirty and achieves the same goal.

[kaigoh]

You can't obtain pointers to data stored in PROGMEM, so I'll need to go back and just edit the template instead. :(