How to migrate SSE chat node express to node hapi - node.js

Question

I was testing a SSE node express chat in localhost.It was working perfectly. I was including a chat_server in a demo with hapijs as modular server...and it complain about the express syntax. How can I migrate the code to the right syntax in hapijs?
I am trying to solve changing writeHead and write methods because it's complaing about and adding stream package after searching answers in internet.
/*
* Request handlers
*/
function handleGetChat(req, res) {
console.log('handleGetChat received.');
// res(chatStream).code(200).type('text/event-stream').header('Connection', 'keep-alive').header('Cache-Control','no-cache');
// chatStream.write('\n');
(function(clientId) {
clients[clientId] = res;
clientNames[clientId] = req.params.name;
console.log('name {$req.params.name}');
req.on("close", () => {
delete clients[clientId];
actUserName = "";
sendText(clientNames[clientId] + " disconnected!", false);
delete clientNames[clientId];
});
})(++clientId);
sendText(req.params.name + " connected!", false);
let allMates = "";
for (cliId in clientNames) {
allMates += `${clientNames[cliId]}`;
if (cliId < clientId) allMates += " ";
}
sendText(`logged in [${allMates}]`, false);
}
let sendText = (text, showUserName = true) => {
for (clientId in clients) {
allMates += `${clientNames[cliId]}`;
if (cliId < clientId) allMates += " ";
}
sendText(logged in [${allMates}], false);
}
let sendText = (text, showUserName = true) => {
for (clientId in clients) {
let data = "";
let date = new Date();
let timestamp = `[${date.getHours()}:${date.getMinutes()}]`;
if (showUserName) {
data = `data: ${timestamp} <${actUserName}> ${text}\n\n`;
} else {
data = `data: ${timestamp} ${text}\n\n`;
}
//chatStream.push('data: ' + "\n\n");
}
};
function handleWriteChat(req, res) {
actUserName = req.body.name;
sendText(req.body.text);
res.json({ success: true });
}
The commented lines in the code above are the lines with syntax error in hapi. I was already changing the originals write and writeHead with chatstream.