Trying to stringify an object to JSON, but not enough memory to fit the whole thing in memory

HUZZAH!!!!! Thank you!!

htypes=["Temp","RH","Pressure","AirQual"­,"Clear","Red","Green","Blue"];

function writeTypedHistory(res,tdx) {
  var typen = htypes[tdx];
  res.write((tdx === 0) ? '{"' : ',"');
  res.write(typen);
  res.write('":');
  res.write(JSON.stringify(HISTORY[typen])­);
  if (++tdx < htypes.length) {
    setTimeout(writeTypedHistory,200,res,tdx­);
  } else {
    res.write('}');
    res.end();
  }
}



function processrequest(req, res) {
	try {
		var par=url.parse(req.url,true);
		var q=par.query; 
		var path=par.pathname; 
		path=path.split('/');
		path=path[1];
	    switch(path) {
	    	case "history.json":
			res.writeHead(200,head);
			setTimeout(writeTypedHistory,10,res,0);
	    		break;
<snip>
	    }
	}
	catch (err){
		res.writeHead(500,head);
	    res.write("{status:\"error\",error:\""+e­rr.message+"\"}");
		res.end();
	}
}